source: trunk/src/twain_32/initterm.cpp@ 3993

Last change on this file since 3993 was 3993, checked in by sandervl, 25 years ago

Updates for fake system dll headers
File size: 5.4 KB
Line 
1/* $Id: initterm.cpp,v 1.9 2000-08-11 10:56:25 sandervl Exp $ */
2
3/*
4 * DLL entry point
5 *
6 * Copyright 1998 Sander van Leeuwen
7 * Copyright 1998 Peter Fitzsimmons
8 *
9 *
10 * Project Odin Software License can be found in LICENSE.TXT
11 *
12 */
13
14/*-------------------------------------------------------------*/
15/* INITERM.C -- Source for a custom dynamic link library */
16/* initialization and termination (_DLL_InitTerm) */
17/* function. */
18/* */
19/* When called to perform initialization, this sample function */
20/* gets storage for an array of integers, and initializes its */
21/* elements with random integers. At termination time, it */
22/* frees the array. Substitute your own special processing. */
23/*-------------------------------------------------------------*/
24
25
26/* Include files */
27#define INCL_DOSMODULEMGR
28#define INCL_DOSPROCESS
29#include <os2wrap.h> //Odin32 OS/2 api wrappers
30#include <stdlib.h>
31#include <stdio.h>
32#include <string.h>
33#include <odin.h>
34#include <win32type.h>
35#include <winconst.h>
36#include <odinlx.h>
37#include <misc.h> /*PLF Wed 98-03-18 23:18:15*/
38#include <twain.h>
39
40extern "C" {
41void CDECL _ctordtorInit( void );
42void CDECL _ctordtorTerm( void );
43
44//Win32 resource table (produced by wrc)
45extern DWORD _Resource_PEResTab;
46
47extern FARPROC WINAPI GetProcAddress(HMODULE,LPCSTR);
48extern HMODULE WINAPI LoadLibraryA(LPCSTR);
49extern BOOL WINAPI FreeLibrary(HMODULE);
50extern int WINAPI PROFILE_GetOdinIniInt(LPCSTR section,LPCSTR key_name,int def);
51TW_UINT16 (APIENTRY *TWAINOS2_DSM_Entry)( pTW_IDENTITY, pTW_IDENTITY,
52 TW_UINT32, TW_UINT16, TW_UINT16, TW_MEMREF) = 0;
53static HINSTANCE hTWAIN = 0;
54
55}
56static HMODULE dllHandle = 0;
57
58//******************************************************************************
59//******************************************************************************
60BOOL WINAPI LibMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID fImpLoad)
61{
62 switch (fdwReason)
63 {
64 case DLL_PROCESS_ATTACH:
65 return TRUE;
66
67 case DLL_THREAD_ATTACH:
68 case DLL_THREAD_DETACH:
69 return TRUE;
70
71 case DLL_PROCESS_DETACH:
72 _ctordtorTerm();
73 return TRUE;
74 }
75 return FALSE;
76}
77/****************************************************************************/
78/* _DLL_InitTerm is the function that gets called by the operating system */
79/* loader when it loads and frees this DLL for each process that accesses */
80/* this DLL. However, it only gets called the first time the DLL is loaded */
81/* and the last time it is freed for a particular process. The system */
82/* linkage convention MUST be used because the operating system loader is */
83/* calling this function. */
84/****************************************************************************/
85unsigned long SYSTEM _DLL_InitTerm(unsigned long hModule, unsigned long
86 ulFlag)
87{
88 size_t i;
89 APIRET rc;
90 ULONG twaintype;
91
92 /*-------------------------------------------------------------------------*/
93 /* If ulFlag is zero then the DLL is being loaded so initialization should */
94 /* be performed. If ulFlag is 1 then the DLL is being freed so */
95 /* termination should be performed. */
96 /*-------------------------------------------------------------------------*/
97
98 switch (ulFlag) {
99 case 0 :
100 _ctordtorInit();
101
102 CheckVersionFromHMOD(PE2LX_VERSION, hModule); /*PLF Wed 98-03-18 05:28:48*/
103
104 twaintype = PROFILE_GetOdinIniInt("TWAIN","TwainIF",1);
105 switch(twaintype)
106 {
107 case 1:
108 default:
109 {
110 dprintf(("TWAIN_32: Using CFM-Twain as Twain Source.\n\n"));
111 hTWAIN = LoadLibraryA("TWAINOS2.DLL");
112 if(hTWAIN)
113 {
114 *(VOID **)&TWAINOS2_DSM_Entry=(void*)GetProcAddress(hTWAIN, (LPCSTR)"DSM_Entry");
115 }
116 else
117 {
118 return 0UL;
119 }
120 break;
121 }
122 case 2:
123 {
124 dprintf(("TWAIN_32: Using STI-Twain as Twain Source.\n\n"));
125 hTWAIN = LoadLibraryA("TWAIN.DLL");
126 if(hTWAIN)
127 {
128 *(VOID **)&TWAINOS2_DSM_Entry=(void*)GetProcAddress(hTWAIN, (LPCSTR)"DSM_ENTRY");
129 }
130 else
131 {
132 return 0UL;
133 }
134 break;
135 }
136 case 3:
137 {
138 dprintf(("TWAIN_32: Using SANE as Twain Source (currently not supported).\n\n"));
139// hTWAIN = LoadLibraryA("TWAINSNE.DLL");
140// if(hTWAIN)
141// {
142// *(VOID **)&TWAINOS2_DSM_Entry=(void*)GetProcAddress(hTWAIN, (LPCSTR)"DSM_Entry");
143// }
144 return 0UL;
145 }
146 }
147
148 dllHandle = RegisterLxDll(hModule, LibMain, (PVOID)&_Resource_PEResTab);
149 if(dllHandle == 0)
150 return 0UL;
151
152 break;
153 case 1 :
154 if(hTWAIN)
155 FreeLibrary(hTWAIN);
156 hTWAIN = 0;
157 if(dllHandle) {
158 UnregisterLxDll(dllHandle);
159 }
160 break;
161 default :
162 return 0UL;
163 }
164
165 /***********************************************************/
166 /* A non-zero value must be returned to indicate success. */
167 /***********************************************************/
168 return 1UL;
169}
170//******************************************************************************
171//******************************************************************************
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