1 | /* $Id: oleMenu.cpp,v 1.2 1999-09-08 11:29:28 davidr Exp $ */
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2 | /*
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3 | *
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4 | * Project Odin Software License can be found in LICENSE.TXT
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5 | *
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6 | */
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7 | /*
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8 | * OLEMENU functions.
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9 | *
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10 | * 4/9/99
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11 | *
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12 | * Copyright 1999 David J. Raison
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13 | *
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14 | * Some portions from Wine Implementation (2/9/99)
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15 | * Copyright 1995 Martin von Loewis
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16 | * Copyright 1999 Francis Beaudet
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17 | * Copyright 1999 Noel Borthwick
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18 | */
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19 |
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20 | #include "ole32.h"
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21 | #include "commctrl.h"
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22 | #include "oString.h"
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23 | #include <assert.h>
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24 |
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25 | // ======================================================================
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26 | // Local Data
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27 | // ======================================================================
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28 |
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29 | typedef struct tagOleMenuDescriptor /* OleMenuDescriptor */
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30 | {
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31 | HWND hwndFrame; /* The containers frame window */
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32 | HWND hwndActiveObject; /* The active objects window */
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33 | OLEMENUGROUPWIDTHS mgw; /* OLE menu group widths for the shared menu */
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34 | HMENU hmenuCombined; /* The combined menu */
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35 | BOOL bIsServerItem; /* True if the currently open popup belongs to the server */
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36 | } OleMenuDescriptor;
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37 |
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38 | typedef struct tagOleMenuHookItem /* OleMenu hook item in per thread hook list */
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39 | {
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40 | DWORD tid; /* Thread Id */
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41 | HANDLE hHeap; /* Heap this is allocated from */
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42 | HHOOK GetMsg_hHook; /* message hook for WH_GETMESSAGE */
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43 | HHOOK CallWndProc_hHook; /* message hook for WH_CALLWNDPROC */
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44 | } OleMenuHookItem;
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45 |
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46 | /*
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47 | * Dynamic pointer array of per thread message hooks (maintained by OleSetMenuDescriptor)
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48 | */
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49 | static HDPA OLEMenu_MsgHookDPA = NULL;
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50 |
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51 |
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52 | // ======================================================================
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53 | // Prototypes.
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54 | // ======================================================================
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55 | static void OLEUTL_ReadRegistryDWORDValue(HKEY regKey, DWORD* pdwValue);
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56 |
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57 | // These are the prototypes of the utility methods used to manage a shared menu
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58 | extern void OLEMenu_Initialize();
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59 | extern void OLEMenu_UnInitialize();
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60 |
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61 | BOOL OLEMenu_InstallHooks( DWORD tid );
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62 | BOOL OLEMenu_UnInstallHooks( DWORD tid );
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63 | OleMenuHookItem * OLEMenu_IsHookInstalled( DWORD tid, INT *pixHook );
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64 | static BOOL OLEMenu_FindMainMenuIndex( HMENU hMainMenu, HMENU hPopupMenu, UINT *pnPos );
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65 | BOOL OLEMenu_SetIsServerMenu( HMENU hmenu, OleMenuDescriptor *pOleMenuDescriptor );
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66 | LRESULT CALLBACK OLEMenu_CallWndProc(INT code, WPARAM wParam, LPARAM lParam);
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67 | LRESULT CALLBACK OLEMenu_GetMsgProc(INT code, WPARAM wParam, LPARAM lParam);
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68 |
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69 | // ======================================================================
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70 | // Public API's
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71 | // ======================================================================
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72 |
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73 | /*
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74 | * OleCreateMenuDescriptor [OLE32.97]
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75 | * Creates an OLE menu descriptor for OLE to use when dispatching
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76 | * menu messages and commands.
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77 | *
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78 | * PARAMS:
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79 | * hmenuCombined - Handle to the objects combined menu
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80 | * lpMenuWidths - Pointer to array of 6 LONG's indicating menus per group
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81 | *
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82 | */
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83 | HOLEMENU WIN32API OleCreateMenuDescriptor(
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84 | HMENU hmenuCombined,
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85 | LPOLEMENUGROUPWIDTHS lpMenuWidths)
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86 | {
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87 | HOLEMENU hOleMenu;
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88 | OleMenuDescriptor *pOleMenuDescriptor;
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89 | int i;
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90 |
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91 | if ( !hmenuCombined || !lpMenuWidths )
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92 | return 0;
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93 |
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94 | /* Create an OLE menu descriptor */
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95 | if ( !(hOleMenu = GlobalAlloc(GMEM_MOVEABLE | GMEM_ZEROINIT,
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96 | sizeof(OleMenuDescriptor) ) ) )
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97 | return 0;
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98 |
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99 | pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
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100 | if ( !pOleMenuDescriptor )
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101 | return 0;
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102 |
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103 | /* Initialize menu group widths and hmenu */
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104 | for ( i = 0; i < 6; i++ )
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105 | pOleMenuDescriptor->mgw.width[i] = lpMenuWidths->width[i];
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106 |
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107 | pOleMenuDescriptor->hmenuCombined = hmenuCombined;
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108 | pOleMenuDescriptor->bIsServerItem = FALSE;
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109 | GlobalUnlock( hOleMenu );
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110 |
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111 | return hOleMenu;
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112 | }
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113 |
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114 | /*
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115 | * OleDestroyMenuDescriptor [OLE32.99]
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116 | * Destroy the shared menu descriptor
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117 | */
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118 | HRESULT WIN32API OleDestroyMenuDescriptor(
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119 | HOLEMENU hmenuDescriptor)
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120 | {
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121 | if ( hmenuDescriptor )
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122 | GlobalFree( hmenuDescriptor );
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123 | return S_OK;
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124 | }
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125 |
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126 | /*
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127 | * OleSetMenuDescriptor [OLE32.129]
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128 | * Installs or removes OLE dispatching code for the containers frame window
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129 | * FIXME: The lpFrame and lpActiveObject parameters are currently ignored
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130 | * OLE should install context sensitive help F1 filtering for the app when
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131 | * these are non null.
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132 | *
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133 | * PARAMS:
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134 | * hOleMenu Handle to composite menu descriptor
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135 | * hwndFrame Handle to containers frame window
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136 | * hwndActiveObject Handle to objects in-place activation window
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137 | * lpFrame Pointer to IOleInPlaceFrame on containers window
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138 | * lpActiveObject Pointer to IOleInPlaceActiveObject on active in-place object
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139 | *
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140 | * RETURNS:
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141 | * S_OK - menu installed correctly
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142 | * E_FAIL, E_INVALIDARG, E_UNEXPECTED - failure
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143 | */
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144 | HRESULT WIN32API OleSetMenuDescriptor(
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145 | HOLEMENU hOleMenu,
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146 | HWND hwndFrame,
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147 | HWND hwndActiveObject,
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148 | LPOLEINPLACEFRAME lpFrame,
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149 | LPOLEINPLACEACTIVEOBJECT lpActiveObject)
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150 | {
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151 | OleMenuDescriptor *pOleMenuDescriptor = NULL;
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152 |
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153 | /* Check args */
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154 | if ( !hwndFrame || (hOleMenu && !hwndActiveObject) )
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155 | return E_INVALIDARG;
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156 |
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157 | if ( lpFrame || lpActiveObject )
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158 | {
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159 | dprintf(("OLE32: OleSetMenuDescriptor(%x, %x, %x, %p, %p), Context sensitive help filtering not implemented!\n",
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160 | (unsigned int)hOleMenu,
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161 | hwndFrame,
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162 | hwndActiveObject,
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163 | lpFrame,
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164 | lpActiveObject));
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165 | }
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166 |
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167 | /* Set up a message hook to intercept the containers frame window messages.
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168 | * The message filter is responsible for dispatching menu messages from the
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169 | * shared menu which are intended for the object.
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170 | */
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171 |
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172 | if ( hOleMenu ) /* Want to install dispatching code */
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173 | {
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174 | /* If OLEMenu hooks are already installed for this thread, fail
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175 | * Note: This effectively means that OleSetMenuDescriptor cannot
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176 | * be called twice in succession on the same frame window
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177 | * without first calling it with a null hOleMenu to uninstall */
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178 | if ( OLEMenu_IsHookInstalled( GetCurrentThreadId(), NULL ) )
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179 | return E_FAIL;
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180 |
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181 | /* Get the menu descriptor */
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182 | pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
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183 | if ( !pOleMenuDescriptor )
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184 | return E_UNEXPECTED;
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185 |
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186 | /* Update the menu descriptor */
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187 | pOleMenuDescriptor->hwndFrame = hwndFrame;
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188 | pOleMenuDescriptor->hwndActiveObject = hwndActiveObject;
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189 |
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190 | GlobalUnlock( hOleMenu );
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191 | pOleMenuDescriptor = NULL;
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192 |
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193 | /* Add a menu descriptor windows property to the frame window */
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194 | SetPropA( hwndFrame, "PROP_OLEMenuDescriptor", hOleMenu );
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195 |
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196 | /* Install thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC */
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197 | if ( !OLEMenu_InstallHooks( GetCurrentThreadId() ) )
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198 | return E_FAIL;
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199 | }
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200 | else /* Want to uninstall dispatching code */
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201 | {
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202 | /* Uninstall the hooks */
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203 | if ( !OLEMenu_UnInstallHooks( GetCurrentThreadId() ) )
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204 | return E_FAIL;
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205 |
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206 | /* Remove the menu descriptor property from the frame window */
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207 | RemovePropA( hwndFrame, "PROP_OLEMenuDescriptor" );
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208 | }
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209 |
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210 | return S_OK;
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211 | }
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212 |
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213 | /*
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214 | * OLEMenu_Initialize()
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215 | *
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216 | * Initializes the OLEMENU data structures.
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217 | */
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218 | extern void OLEMenu_Initialize()
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219 | {
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220 | dprintf(("OLE32: OLEMenu_Initialize"));
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221 |
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222 | /* Create a dynamic pointer array to store the hook handles */
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223 | if ( !OLEMenu_MsgHookDPA )
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224 | OLEMenu_MsgHookDPA = DPA_CreateEx( 2, GetProcessHeap() );
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225 | }
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226 |
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227 | /*
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228 | * OLEMenu_UnInitialize()
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229 | *
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230 | * Releases the OLEMENU data structures.
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231 | */
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232 | extern void OLEMenu_UnInitialize()
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233 | {
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234 | dprintf(("OLE32: OLEMenu_UnInitialize"));
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235 |
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236 | /* Release the hook table */
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237 | if ( OLEMenu_MsgHookDPA )
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238 | DPA_Destroy( OLEMenu_MsgHookDPA );
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239 |
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240 | OLEMenu_MsgHookDPA = NULL;
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241 | }
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242 |
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243 | // ======================================================================
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244 | // Private functions.
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245 | // ======================================================================
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246 |
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247 | /*
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248 | * Internal methods to manage the shared OLE menu in response to the
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249 | * OLE***MenuDescriptor API
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250 | */
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251 |
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252 | /*
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253 | * OLEMenu_InstallHooks
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254 | * Install thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC
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255 | *
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256 | * RETURNS: TRUE if message hooks were succesfully installed
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257 | * FALSE on failure
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258 | */
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259 | BOOL OLEMenu_InstallHooks( DWORD tid )
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260 | {
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261 | OleMenuHookItem *pHookItem = NULL;
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262 |
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263 | if ( !OLEMenu_MsgHookDPA ) /* No hook table? Create one */
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264 | {
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265 | /* Create a dynamic pointer array to store the hook handles */
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266 | if ( !(OLEMenu_MsgHookDPA = DPA_CreateEx( 2, GetProcessHeap() )) )
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267 | return FALSE;
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268 | }
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269 |
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270 | /* Create an entry for the hook table */
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271 | if ( !(pHookItem = (OleMenuHookItem *)HeapAlloc(GetProcessHeap(), 0,
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272 | sizeof(OleMenuHookItem)) ) )
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273 | return FALSE;
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274 |
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275 | pHookItem->tid = tid;
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276 | pHookItem->hHeap = GetProcessHeap();
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277 |
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278 | /* Install a thread scope message hook for WH_GETMESSAGE */
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279 | pHookItem->GetMsg_hHook = SetWindowsHookExA( WH_GETMESSAGE, OLEMenu_GetMsgProc,
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280 | 0, GetCurrentThreadId() );
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281 | if ( !pHookItem->GetMsg_hHook )
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282 | goto CLEANUP;
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283 |
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284 | /* Install a thread scope message hook for WH_CALLWNDPROC */
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285 | pHookItem->CallWndProc_hHook = SetWindowsHookExA( WH_CALLWNDPROC, OLEMenu_CallWndProc,
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286 | 0, GetCurrentThreadId() );
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287 | if ( !pHookItem->CallWndProc_hHook )
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288 | goto CLEANUP;
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289 |
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290 | /* Insert the hook table entry */
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291 | if ( -1 == DPA_InsertPtr( OLEMenu_MsgHookDPA, 0, pHookItem ) )
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292 | goto CLEANUP;
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293 |
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294 | return TRUE;
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295 |
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296 | CLEANUP:
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297 | /* Unhook any hooks */
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298 | if ( pHookItem->GetMsg_hHook )
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299 | UnhookWindowsHookEx( pHookItem->GetMsg_hHook );
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300 | if ( pHookItem->CallWndProc_hHook )
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301 | UnhookWindowsHookEx( pHookItem->CallWndProc_hHook );
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302 | /* Release the hook table entry */
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303 | HeapFree(pHookItem->hHeap, 0, pHookItem );
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304 |
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305 | return FALSE;
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306 | }
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307 |
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308 | /*
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309 | * OLEMenu_UnInstallHooks
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310 | * UnInstall thread scope message hooks for WH_GETMESSAGE and WH_CALLWNDPROC
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311 | *
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312 | * RETURNS: TRUE if message hooks were succesfully installed
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313 | * FALSE on failure
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314 | */
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315 | BOOL OLEMenu_UnInstallHooks( DWORD tid )
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316 | {
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317 | INT ixHook;
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318 | OleMenuHookItem *pHookItem = NULL;
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319 |
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320 | if ( !OLEMenu_MsgHookDPA ) /* No hooks set */
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321 | return TRUE;
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322 |
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323 | /* Lookup the hHook index for this tid */
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324 | if ( !OLEMenu_IsHookInstalled( tid , &ixHook ) )
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325 | return TRUE;
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326 |
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327 | /* Remove the hook entry from the table(the pointer itself is not deleted) */
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328 | if ( !( pHookItem = (OleMenuHookItem *)DPA_DeletePtr(OLEMenu_MsgHookDPA, ixHook) ) )
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329 | return FALSE;
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330 |
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331 | /* Uninstall the hooks installed for this thread */
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332 | if ( !UnhookWindowsHookEx( pHookItem->GetMsg_hHook ) )
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333 | goto CLEANUP;
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334 | if ( !UnhookWindowsHookEx( pHookItem->CallWndProc_hHook ) )
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335 | goto CLEANUP;
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336 |
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337 | /* Release the hook table entry */
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338 | HeapFree(pHookItem->hHeap, 0, pHookItem );
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339 |
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340 | return TRUE;
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341 |
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342 | CLEANUP:
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343 | /* Release the hook table entry */
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344 | if (pHookItem)
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345 | HeapFree(pHookItem->hHeap, 0, pHookItem );
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346 |
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347 | return FALSE;
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348 | }
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349 |
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350 | /*
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351 | * OLEMenu_IsHookInstalled
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352 | * Tests if OLEMenu hooks have been installed for a thread
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353 | *
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354 | * RETURNS: The pointer and index of the hook table entry for the tid
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355 | * NULL and -1 for the index if no hooks were installed for this thread
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356 | */
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357 | OleMenuHookItem * OLEMenu_IsHookInstalled( DWORD tid, INT *pixHook )
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358 | {
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359 | INT ixHook;
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360 | OleMenuHookItem *pHookItem = NULL;
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361 |
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362 | if ( pixHook )
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363 | *pixHook = -1;
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364 |
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365 | if ( !OLEMenu_MsgHookDPA ) /* No hooks set */
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366 | return NULL;
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367 |
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368 | /* Do a simple linear search for an entry whose tid matches ours.
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369 | * We really need a map but efficiency is not a concern here. */
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370 | for( ixHook = 0; ; ixHook++ )
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371 | {
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372 | /* Retrieve the hook entry */
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373 | if ( !( pHookItem = (OleMenuHookItem *)DPA_GetPtr(OLEMenu_MsgHookDPA, ixHook) ) )
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374 | return NULL;
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375 |
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376 | if ( tid == pHookItem->tid )
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377 | {
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378 | if ( pixHook )
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379 | *pixHook = ixHook;
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380 | return pHookItem;
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381 | }
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382 | }
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383 |
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384 | return NULL;
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385 | }
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386 |
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387 | /*
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388 | * OLEMenu_FindMainMenuIndex
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389 | *
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390 | * Used by OLEMenu API to find the top level group a menu item belongs to.
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391 | * On success pnPos contains the index of the item in the top level menu group
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392 | *
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393 | * RETURNS: TRUE if the ID was found, FALSE on failure
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394 | */
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395 | static BOOL OLEMenu_FindMainMenuIndex( HMENU hMainMenu, HMENU hPopupMenu, UINT *pnPos )
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396 | {
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397 | UINT i, nItems;
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398 |
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399 | nItems = GetMenuItemCount( hMainMenu );
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400 |
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401 | for (i = 0; i < nItems; i++)
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402 | {
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403 | HMENU hsubmenu;
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404 |
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405 | /* Is the current item a submenu? */
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406 | if ( (hsubmenu = GetSubMenu(hMainMenu, i)) != NULL)
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407 | {
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408 | /* If the handle is the same we're done */
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409 | if ( hsubmenu == hPopupMenu )
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410 | {
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411 | if (pnPos)
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412 | *pnPos = i;
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413 | return TRUE;
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414 | }
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415 | /* Recursively search without updating pnPos */
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416 | else if ( OLEMenu_FindMainMenuIndex( hsubmenu, hPopupMenu, NULL ) )
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417 | {
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418 | if (pnPos)
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419 | *pnPos = i;
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420 | return TRUE;
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421 | }
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422 | }
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423 | }
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424 |
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425 | return FALSE;
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426 | }
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427 |
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428 | /*
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429 | * OLEMenu_SetIsServerMenu
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430 | *
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431 | * Checks whether a popup menu belongs to a shared menu group which is
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432 | * owned by the server, and sets the menu descriptor state accordingly.
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433 | * All menu messages from these groups should be routed to the server.
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434 | *
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435 | * RETURNS: TRUE if the popup menu is part of a server owned group
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436 | * FASE if the popup menu is part of a container owned group
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437 | */
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438 | BOOL OLEMenu_SetIsServerMenu( HMENU hmenu, OleMenuDescriptor *pOleMenuDescriptor )
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439 | {
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440 | UINT nPos = 0, nWidth, i;
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441 |
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442 | pOleMenuDescriptor->bIsServerItem = FALSE;
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443 |
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444 | /* Don't bother searching if the popup is the combined menu itself */
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445 | if ( hmenu == pOleMenuDescriptor->hmenuCombined )
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446 | return FALSE;
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447 |
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448 | /* Find the menu item index in the shared OLE menu that this item belongs to */
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449 | if ( !OLEMenu_FindMainMenuIndex( pOleMenuDescriptor->hmenuCombined, hmenu, &nPos ) )
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450 | return FALSE;
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451 |
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452 | /* The group widths array has counts for the number of elements
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453 | * in the groups File, Edit, Container, Object, Window, Help.
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454 | * The Edit, Object & Help groups belong to the server object
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455 | * and the other three belong to the container.
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456 | * Loop thru the group widths and locate the group we are a member of.
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457 | */
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458 | for ( i = 0, nWidth = 0; i < 6; i++ )
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459 | {
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460 | nWidth += pOleMenuDescriptor->mgw.width[i];
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461 | if ( nPos < nWidth )
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462 | {
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463 | /* Odd elements are server menu widths */
|
---|
464 | pOleMenuDescriptor->bIsServerItem = (i%2) ? TRUE : FALSE;
|
---|
465 | break;
|
---|
466 | }
|
---|
467 | }
|
---|
468 |
|
---|
469 | return pOleMenuDescriptor->bIsServerItem;
|
---|
470 | }
|
---|
471 |
|
---|
472 | /*
|
---|
473 | * OLEMenu_CallWndProc
|
---|
474 | * Thread scope WH_CALLWNDPROC hook proc filter function (callback)
|
---|
475 | * This is invoked from a message hook installed in OleSetMenuDescriptor.
|
---|
476 | */
|
---|
477 | LRESULT CALLBACK OLEMenu_CallWndProc(INT code, WPARAM wParam, LPARAM lParam)
|
---|
478 | {
|
---|
479 | LPCWPSTRUCT pMsg = NULL;
|
---|
480 | HOLEMENU hOleMenu = 0;
|
---|
481 | OleMenuDescriptor *pOleMenuDescriptor = NULL;
|
---|
482 | OleMenuHookItem *pHookItem = NULL;
|
---|
483 | WORD fuFlags;
|
---|
484 |
|
---|
485 | dprintf(("OLE32: OLEMenu_CallWndProc %i, %04x, %08x", code, wParam, (unsigned)lParam));
|
---|
486 |
|
---|
487 | /* Check if we're being asked to process the message */
|
---|
488 | if ( HC_ACTION != code )
|
---|
489 | goto NEXTHOOK;
|
---|
490 |
|
---|
491 | /* Retrieve the current message being dispatched from lParam */
|
---|
492 | pMsg = (LPCWPSTRUCT)lParam;
|
---|
493 |
|
---|
494 | /* Check if the message is destined for a window we are interested in:
|
---|
495 | * If the window has an OLEMenu property we may need to dispatch
|
---|
496 | * the menu message to its active objects window instead. */
|
---|
497 |
|
---|
498 | hOleMenu = (HOLEMENU)GetPropA( pMsg->hwnd, "PROP_OLEMenuDescriptor" );
|
---|
499 | if ( !hOleMenu )
|
---|
500 | goto NEXTHOOK;
|
---|
501 |
|
---|
502 | /* Get the menu descriptor */
|
---|
503 | pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
|
---|
504 | if ( !pOleMenuDescriptor ) /* Bad descriptor! */
|
---|
505 | goto NEXTHOOK;
|
---|
506 |
|
---|
507 | /* Process menu messages */
|
---|
508 | switch( pMsg->message )
|
---|
509 | {
|
---|
510 | case WM_INITMENU:
|
---|
511 | {
|
---|
512 | /* Reset the menu descriptor state */
|
---|
513 | pOleMenuDescriptor->bIsServerItem = FALSE;
|
---|
514 |
|
---|
515 | /* Send this message to the server as well */
|
---|
516 | SendMessageA( pOleMenuDescriptor->hwndActiveObject,
|
---|
517 | pMsg->message, pMsg->wParam, pMsg->lParam );
|
---|
518 | goto NEXTHOOK;
|
---|
519 | }
|
---|
520 |
|
---|
521 | case WM_INITMENUPOPUP:
|
---|
522 | {
|
---|
523 | /* Save the state for whether this is a server owned menu */
|
---|
524 | OLEMenu_SetIsServerMenu( (HMENU)pMsg->wParam, pOleMenuDescriptor );
|
---|
525 | break;
|
---|
526 | }
|
---|
527 |
|
---|
528 | case WM_MENUSELECT:
|
---|
529 | {
|
---|
530 | fuFlags = HIWORD(pMsg->wParam); /* Get flags */
|
---|
531 | if ( fuFlags & MF_SYSMENU )
|
---|
532 | goto NEXTHOOK;
|
---|
533 |
|
---|
534 | /* Save the state for whether this is a server owned popup menu */
|
---|
535 | else if ( fuFlags & MF_POPUP )
|
---|
536 | OLEMenu_SetIsServerMenu( (HMENU)pMsg->lParam, pOleMenuDescriptor );
|
---|
537 |
|
---|
538 | break;
|
---|
539 | }
|
---|
540 |
|
---|
541 | case WM_DRAWITEM:
|
---|
542 | {
|
---|
543 | LPDRAWITEMSTRUCT lpdis = (LPDRAWITEMSTRUCT) pMsg->lParam;
|
---|
544 | if ( pMsg->wParam != 0 || lpdis->CtlType != ODT_MENU )
|
---|
545 | goto NEXTHOOK; /* Not a menu message */
|
---|
546 |
|
---|
547 | break;
|
---|
548 | }
|
---|
549 |
|
---|
550 | default:
|
---|
551 | goto NEXTHOOK;
|
---|
552 | }
|
---|
553 |
|
---|
554 | /* If the message was for the server dispatch it accordingly */
|
---|
555 | if ( pOleMenuDescriptor->bIsServerItem )
|
---|
556 | {
|
---|
557 | SendMessageA( pOleMenuDescriptor->hwndActiveObject,
|
---|
558 | pMsg->message, pMsg->wParam, pMsg->lParam );
|
---|
559 | }
|
---|
560 |
|
---|
561 | NEXTHOOK:
|
---|
562 | if ( pOleMenuDescriptor )
|
---|
563 | GlobalUnlock( hOleMenu );
|
---|
564 |
|
---|
565 | /* Lookup the hook item for the current thread */
|
---|
566 | if ( !( pHookItem = OLEMenu_IsHookInstalled( GetCurrentThreadId(), NULL ) ) )
|
---|
567 | {
|
---|
568 | /* This should never fail!! */
|
---|
569 | dprintf(("Warning: Could not retrieve hHook for current thread!"));
|
---|
570 | return 0;
|
---|
571 | }
|
---|
572 |
|
---|
573 | /* Pass on the message to the next hooker */
|
---|
574 | return CallNextHookEx( pHookItem->CallWndProc_hHook, code, wParam, lParam );
|
---|
575 | }
|
---|
576 |
|
---|
577 | /*
|
---|
578 | * OLEMenu_GetMsgProc
|
---|
579 | * Thread scope WH_GETMESSAGE hook proc filter function (callback)
|
---|
580 | * This is invoked from a message hook installed in OleSetMenuDescriptor.
|
---|
581 | */
|
---|
582 | LRESULT CALLBACK OLEMenu_GetMsgProc(INT code, WPARAM wParam, LPARAM lParam)
|
---|
583 | {
|
---|
584 | LPMSG pMsg = NULL;
|
---|
585 | HOLEMENU hOleMenu = 0;
|
---|
586 | OleMenuDescriptor *pOleMenuDescriptor = NULL;
|
---|
587 | OleMenuHookItem *pHookItem = NULL;
|
---|
588 | WORD wCode;
|
---|
589 |
|
---|
590 | dprintf(("OLE32: OLEMenu_GetMsgProc %i, %04x, %08x", code, wParam, (unsigned)lParam ));
|
---|
591 |
|
---|
592 | /* Check if we're being asked to process a messages */
|
---|
593 | if ( HC_ACTION != code )
|
---|
594 | goto NEXTHOOK;
|
---|
595 |
|
---|
596 | /* Retrieve the current message being dispatched from lParam */
|
---|
597 | pMsg = (LPMSG)lParam;
|
---|
598 |
|
---|
599 | /* Check if the message is destined for a window we are interested in:
|
---|
600 | * If the window has an OLEMenu property we may need to dispatch
|
---|
601 | * the menu message to its active objects window instead. */
|
---|
602 |
|
---|
603 | hOleMenu = (HOLEMENU)GetPropA( pMsg->hwnd, "PROP_OLEMenuDescriptor" );
|
---|
604 | if ( !hOleMenu )
|
---|
605 | goto NEXTHOOK;
|
---|
606 |
|
---|
607 | /* Process menu messages */
|
---|
608 | switch( pMsg->message )
|
---|
609 | {
|
---|
610 | case WM_COMMAND:
|
---|
611 | {
|
---|
612 | wCode = HIWORD(pMsg->wParam); /* Get notification code */
|
---|
613 | if ( wCode )
|
---|
614 | goto NEXTHOOK; /* Not a menu message */
|
---|
615 | break;
|
---|
616 | }
|
---|
617 | default:
|
---|
618 | goto NEXTHOOK;
|
---|
619 | }
|
---|
620 |
|
---|
621 | /* Get the menu descriptor */
|
---|
622 | pOleMenuDescriptor = (OleMenuDescriptor *) GlobalLock( hOleMenu );
|
---|
623 | if ( !pOleMenuDescriptor ) /* Bad descriptor! */
|
---|
624 | goto NEXTHOOK;
|
---|
625 |
|
---|
626 | /* If the message was for the server dispatch it accordingly */
|
---|
627 | if ( pOleMenuDescriptor->bIsServerItem )
|
---|
628 | {
|
---|
629 | /* Change the hWnd in the message to the active objects hWnd.
|
---|
630 | * The message loop which reads this message will automatically
|
---|
631 | * dispatch it to the embedded objects window. */
|
---|
632 | pMsg->hwnd = pOleMenuDescriptor->hwndActiveObject;
|
---|
633 | }
|
---|
634 |
|
---|
635 | NEXTHOOK:
|
---|
636 | if ( pOleMenuDescriptor )
|
---|
637 | GlobalUnlock( hOleMenu );
|
---|
638 |
|
---|
639 | /* Lookup the hook item for the current thread */
|
---|
640 | if ( !( pHookItem = OLEMenu_IsHookInstalled( GetCurrentThreadId(), NULL ) ) )
|
---|
641 | {
|
---|
642 | /* This should never fail!! */
|
---|
643 | dprintf(("Warning: Could not retrieve hHook for current thread!\n" ));
|
---|
644 | return FALSE;
|
---|
645 | }
|
---|
646 |
|
---|
647 | /* Pass on the message to the next hooker */
|
---|
648 | return CallNextHookEx( pHookItem->GetMsg_hHook, code, wParam, lParam );
|
---|
649 | }
|
---|
650 |
|
---|