source: trunk/src/twain_32/initterm.cpp@ 3670

Last change on this file since 3670 was 2649, checked in by sandervl, 26 years ago

Rewrote dll entrypoint
File size: 5.4 KB
Line 
1/* $Id: initterm.cpp,v 1.8 2000-02-05 02:11:41 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}
56//******************************************************************************
57//******************************************************************************
58BOOL WINAPI LibMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID fImpLoad)
59{
60 switch (fdwReason)
61 {
62 case DLL_PROCESS_ATTACH:
63 return TRUE;
64
65 case DLL_THREAD_ATTACH:
66 case DLL_THREAD_DETACH:
67 return TRUE;
68
69 case DLL_PROCESS_DETACH:
70 _ctordtorTerm();
71 return TRUE;
72 }
73 return FALSE;
74}
75/****************************************************************************/
76/* _DLL_InitTerm is the function that gets called by the operating system */
77/* loader when it loads and frees this DLL for each process that accesses */
78/* this DLL. However, it only gets called the first time the DLL is loaded */
79/* and the last time it is freed for a particular process. The system */
80/* linkage convention MUST be used because the operating system loader is */
81/* calling this function. */
82/****************************************************************************/
83unsigned long SYSTEM _DLL_InitTerm(unsigned long hModule, unsigned long
84 ulFlag)
85{
86 size_t i;
87 APIRET rc;
88 ULONG twaintype;
89
90 /*-------------------------------------------------------------------------*/
91 /* If ulFlag is zero then the DLL is being loaded so initialization should */
92 /* be performed. If ulFlag is 1 then the DLL is being freed so */
93 /* termination should be performed. */
94 /*-------------------------------------------------------------------------*/
95
96 switch (ulFlag) {
97 case 0 :
98 _ctordtorInit();
99
100 CheckVersionFromHMOD(PE2LX_VERSION, hModule); /*PLF Wed 98-03-18 05:28:48*/
101
102 twaintype = PROFILE_GetOdinIniInt("TWAIN","TwainIF",1);
103 switch(twaintype)
104 {
105 case 1:
106 default:
107 {
108 dprintf(("TWAIN_32: Using CFM-Twain as Twain Source.\n\n"));
109 hTWAIN = LoadLibraryA("TWAINOS2.DLL");
110 if(hTWAIN)
111 {
112 *(VOID **)&TWAINOS2_DSM_Entry=(void*)GetProcAddress(hTWAIN, (LPCSTR)"DSM_Entry");
113 }
114 else
115 {
116 return 0UL;
117 }
118 break;
119 }
120 case 2:
121 {
122 dprintf(("TWAIN_32: Using STI-Twain as Twain Source.\n\n"));
123 hTWAIN = LoadLibraryA("TWAIN.DLL");
124 if(hTWAIN)
125 {
126 *(VOID **)&TWAINOS2_DSM_Entry=(void*)GetProcAddress(hTWAIN, (LPCSTR)"DSM_ENTRY");
127 }
128 else
129 {
130 return 0UL;
131 }
132 break;
133 }
134 case 3:
135 {
136 dprintf(("TWAIN_32: Using SANE as Twain Source (currently not supported).\n\n"));
137// hTWAIN = LoadLibraryA("TWAINSNE.DLL");
138// if(hTWAIN)
139// {
140// *(VOID **)&TWAINOS2_DSM_Entry=(void*)GetProcAddress(hTWAIN, (LPCSTR)"DSM_Entry");
141// }
142 return 0UL;
143 }
144 }
145 if(RegisterLxDll(hModule, LibMain, (PVOID)&_Resource_PEResTab) == FALSE)
146 return 0UL;
147
148 break;
149 case 1 :
150 if(hTWAIN)
151 FreeLibrary(hTWAIN);
152 hTWAIN = 0;
153 UnregisterLxDll(hModule);
154 break;
155 default :
156 return 0UL;
157 }
158
159 /***********************************************************/
160 /* A non-zero value must be returned to indicate success. */
161 /***********************************************************/
162 return 1UL;
163}
164//******************************************************************************
165//******************************************************************************
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