Changeset 7175 for trunk/src/comctl32/draglist.cpp

Timestamp:

Oct 23, 2001, 11:42:23 PM (24 years ago)

Author:

sandervl

Message:

partly implemented draglist support

File:

• trunk/src/comctl32/draglist.cpp (modified) (3 diffs)

trunk/src/comctl32/draglist.cpp

@@ -1 @@
-/* $Id: draglist.cpp,v 1.2 2000-03-21 17:30:41 cbratschi Exp $ */
+/* $Id: draglist.cpp,v 1.3 2001-10-23 21:42:23 sandervl Exp $ */
 /*
  * Drag List control
@@ -17 +17 @@
 
 #include "commctrl.h"
+#include <winnt.h>
 #include <misc.h>
 
 static DWORD dwLastScrollTime = 0;
 
+extern LPSTR COMCTL32_aSubclass; /* global subclassing atom */
 
-BOOL WINAPI MakeDragList (HWND hwndLB)
-{
-  dprintf(("COMCTL32: MakeDragList - empty stub!"));
-
-  return FALSE;
-}
-
+typedef struct {
+  WNDPROC lpOldWindowProc;
+  BOOL    isUnicode;
+  UINT    uMsg;
+} DRAGLIST_INFO, *LPDRAGLIST_INFO;
 
 VOID WINAPI DrawInsert (HWND hwndParent, HWND hwndLB, INT nItem)
@@ -93 +93 @@
 DRAGLIST_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 {
+  LPDRAGLIST_INFO lpDragInfo;
+  LRESULT ret;
+  DRAGLISTINFO draglist;
 
-  return FALSE;
+  lpDragInfo = (LPDRAGLIST_INFO)GetPropA(hwnd, (LPCSTR)COMCTL32_aSubclass);
+  if(!lpDragInfo) {
+      if(lpDragInfo->isUnicode) {
+           return DefWindowProcW(hwnd, uMsg, wParam, lParam);
+      }
+      else return DefWindowProcA(hwnd, uMsg, wParam, lParam);
+  }
+  switch(uMsg) {
+  case WM_LBUTTONDOWN:
+      draglist.uNotification = DL_BEGINDRAG;
+      draglist.hWnd = hwnd;
+      draglist.ptCursor.x = LOWORD(lParam);
+      draglist.ptCursor.y = HIWORD(lParam);
+      ret = SendMessageA(GetParent(hwnd), (UINT)lpDragInfo->uMsg, GetWindowLongA(hwnd, GWL_ID), (LPARAM)&draglist);
+      goto defaultmsg; //correct?
+
+  case WM_NCDESTROY:
+      if(lpDragInfo->isUnicode) {
+           ret = CallWindowProcW(lpDragInfo->lpOldWindowProc, hwnd, uMsg, wParam, lParam);
+      }
+      else ret = CallWindowProcA(lpDragInfo->lpOldWindowProc, hwnd, uMsg, wParam, lParam);
+
+      SetWindowLongA(hwnd, GWL_WNDPROC, (LONG)lpDragInfo->lpOldWindowProc);
+      SetPropA(hwnd, (LPCSTR)COMCTL32_aSubclass, NULL);
+      COMCTL32_Free(lpDragInfo);
+      break;
+
+defaultmsg:
+  default:
+      if(lpDragInfo->isUnicode) {
+           return CallWindowProcW(lpDragInfo->lpOldWindowProc, hwnd, uMsg, wParam, lParam);
+      }
+      else return CallWindowProcA(lpDragInfo->lpOldWindowProc, hwnd, uMsg, wParam, lParam);
+  }
+  return 0;
 }
+
+BOOL WINAPI MakeDragList (HWND hwndLB)
+{
+  LPDRAGLIST_INFO lpDragInfo;
+
+  dprintf(("COMCTL32: MakeDragList %x - partly implemented", hwndLB));
+
+  lpDragInfo = (LPDRAGLIST_INFO)COMCTL32_Alloc(sizeof(DRAGLIST_INFO));
+  if(SetPropA(hwndLB, (LPCSTR)COMCTL32_aSubclass, (HANDLE)lpDragInfo) == FALSE) {
+      COMCTL32_Free(lpDragInfo);
+      return FALSE;
+  }
+  lpDragInfo->lpOldWindowProc = (WNDPROC)SetWindowLongA(hwndLB, GWL_WNDPROC, (LONG)DRAGLIST_WindowProc);
+  lpDragInfo->isUnicode       = IsWindowUnicode(hwndLB);
+  lpDragInfo->uMsg            = RegisterWindowMessageA(DRAGLISTMSGSTRINGA);
+  return TRUE;
+}