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1.1.1.3 ! root 1: ! 2: /******************************************************************************\ ! 3: * This is a part of the Microsoft Source Code Samples. ! 4: * Copyright (C) 1993 Microsoft Corporation. ! 5: * All rights reserved. ! 6: * This source code is only intended as a supplement to ! 7: * Microsoft Development Tools and/or WinHelp documentation. ! 8: * See these sources for detailed information regarding the ! 9: * Microsoft samples programs. ! 10: \******************************************************************************/ ! 11: 1.1.1.2 root 12: /******************************************************************************\ 1.1 root 13: * 14: * MODULE: THE_DLL.C 15: * 16: * PURPOSE: To provide a simple DLL template. This module contains a 17: * generic DLL entry point (replacing the LIbMain & WEP of 18: * Win16), four exported skeleton functions with varying 19: * parameter lists, and one exported "DLLDialogBox" function 20: * which loads a dialog template from the attached resource 21: * file. 22: * 1.1.1.3 ! root 23: * FUNCTIONS: DllMain() - DLL entry point 1.1 root 24: * DLLFunction1() - skeleton function with no inputs 25: * DLLFunction2() - skeleton function with int input 26: * DLLFunction3() - skeleton function with HANDLE input 27: * DLLFunction4() - skeleton function with HWND input 28: * DLLDialogBox() - calls DialogBox using hndParent param 29: * DLLDlgProc() - dialog window procedure 30: * 31: * COMMENTS: Another name may be used for the entry point 1.1.1.3 ! root 32: * ("DllMain" is only an example). If no initialization 1.1 root 33: * or notification is required in a DLL, the DLL entry point 34: * may be omitted. In either case, make sure to modify the 1.1.1.3 ! root 35: * "-entry:DllMain" part of the DLL's link line in the 1.1 root 36: * makefile; either substitute the new entry point name, or 37: * delete the line altogether (if omitting the entry point). 38: * 1.1.1.2 root 39: \******************************************************************************/ 1.1 root 40: 41: #include <windows.h> 42: #include "the_dll.h" 43: 44: 45: 1.1.1.2 root 46: /******************************************************************************\ 1.1 root 47: * 1.1.1.3 ! root 48: * FUNCTION: DllMain 1.1 root 49: * 50: * INPUTS: hDLL - handle of DLL 51: * dwReason - indicates why DLL called 52: * lpReserved - reserved 53: * 54: * RETURNS: TRUE (always, in this example.) 55: * 56: * Note that the retuRn value is used only when 57: * dwReason = DLL_PROCESS_ATTACH. 58: * 59: * Normally the function would return TRUE if DLL initial- 60: * ization succeeded, or FALSE it it failed. 61: * 1.1.1.2 root 62: * GLOBAL VARS: ghMod - handle of DLL (initialized when PROCESS_ATTACHes) 1.1 root 63: * 64: * COMMENTS: The function will display a dialog box informing user of 65: * each notification message & the name of the attaching/ 66: * detaching process/thread. For more information see 1.1.1.3 ! root 67: * "DllMain" in the Win32 API reference. 1.1 root 68: * 1.1.1.2 root 69: \******************************************************************************/ 1.1 root 70: 1.1.1.3 ! root 71: BOOL WINAPI DllMain (HANDLE hDLL, DWORD dwReason, LPVOID lpReserved) 1.1.1.2 root 72: { 73: switch (dwReason) 74: { 75: case DLL_PROCESS_ATTACH: 76: { 1.1.1.3 ! root 77: char buf[BUFSIZE+1]; 1.1.1.2 root 78: 79: // 80: // DLL is attaching to the address space of the current process. 81: // 1.1 root 82: 1.1.1.2 root 83: ghMod = hDLL; 1.1 root 84: GetModuleFileName (NULL, (LPTSTR) buf, BUFSIZE); 1.1.1.3 ! root 85: MessageBox ( GetFocus(), ! 86: (LPCTSTR) buf, ! 87: (LPCTSTR) "THE_DLL: Process attaching", ! 88: MB_OK | MB_SYSTEMMODAL); 1.1 root 89: break; 90: } 1.1.1.2 root 91: 1.1 root 92: case DLL_THREAD_ATTACH: 93: 1.1.1.2 root 94: // 95: // A new thread is being created in the current process. 96: // 1.1 root 97: 1.1.1.3 ! root 98: MessageBox ( GetFocus(), ! 99: (LPCTSTR) "THE_DLL: Thread attaching", ! 100: (LPCTSTR) "", ! 101: MB_OK | MB_SYSTEMMODAL); 1.1 root 102: break; 1.1.1.2 root 103: 1.1 root 104: case DLL_THREAD_DETACH: 105: 1.1.1.2 root 106: // 107: // A thread is exiting cleanly. 108: // 1.1 root 109: 1.1.1.3 ! root 110: MessageBox ( GetFocus(), ! 111: (LPCTSTR) "THE_DLL: Thread detaching", ! 112: (LPCTSTR) "", ! 113: MB_OK | MB_SYSTEMMODAL); 1.1 root 114: break; 1.1.1.2 root 115: 1.1 root 116: case DLL_PROCESS_DETACH: 117: 1.1.1.2 root 118: // 119: // The calling process is detaching the DLL from its address space. 120: // 1.1.1.3 ! root 121: MessageBox ( GetFocus(), ! 122: (LPCTSTR) "THE_DLL: Process detaching", ! 123: (LPCTSTR) "", ! 124: MB_OK | MB_SYSTEMMODAL ); 1.1 root 125: break; 126: } 1.1.1.2 root 127: 1.1.1.3 ! root 128: return TRUE; 1.1 root 129: } 130: 131: 132: 1.1.1.2 root 133: /******************************************************************************\ 1.1 root 134: * 135: * FUNCTION: DLLFunction1 136: * 137: * RETURNS: 1 138: * 1.1.1.2 root 139: \******************************************************************************/ 1.1 root 140: 141: INT DLLFunction1 () 1.1.1.2 root 142: { 143: MessageBeep (0); 1.1 root 144: return 1; 145: } 146: 147: 148: 1.1.1.2 root 149: /******************************************************************************\ 1.1 root 150: * 151: * FUNCTION: DLLFunction2 152: * 153: * INPUTS: i - a dummy int param 154: * 155: * RETURNS: 1 156: * 1.1.1.2 root 157: \******************************************************************************/ 1.1 root 158: 159: INT DLLFunction2 (int i) 1.1.1.2 root 160: { 161: MessageBeep (0); 1.1 root 162: return 1; 163: } 164: 165: 166: 1.1.1.2 root 167: /******************************************************************************\ 1.1 root 168: * 169: * FUNCTION: DLLFunction3 170: * 171: * INPUTS: h - a dummy HANDLE param 172: * 173: * RETURNS: 1 174: * 1.1.1.2 root 175: \******************************************************************************/ 1.1 root 176: 177: INT DLLFunction3 (HANDLE h) 1.1.1.2 root 178: { 179: MessageBeep (0); 1.1 root 180: return 1; 181: } 182: 183: 184: 1.1.1.2 root 185: /******************************************************************************\ 1.1 root 186: * 187: * FUNCTION: DLLFunction4 188: * 189: * INPUTS: i - a dummy HWND param 190: * 191: * RETURNS: 1 192: * 1.1.1.2 root 193: \******************************************************************************/ 1.1 root 194: 195: INT DLLFunction4 (HWND hwnd) 1.1.1.2 root 196: { 197: MessageBeep (0); 1.1 root 198: return 1; 199: } 200: 201: 202: 1.1.1.2 root 203: /******************************************************************************\ 1.1 root 204: * 205: * FUNCTION: DLLDialogBox 206: * 207: * INPUTS: hwndPArent - parent of the dialog box to display 208: * 209: * RETURNS: 1 210: * 1.1.1.2 root 211: \******************************************************************************/ 1.1 root 212: 213: INT DLLDialogBox (HWND hwndParent) 1.1.1.2 root 214: { 215: DialogBox (ghMod, (LPCTSTR) "DLLDlg", hwndParent, (DLGPROC) DLLDlgProc); 1.1 root 216: return 1; 217: } 218: 219: 220: 1.1.1.2 root 221: /******************************************************************************\ 1.1 root 222: * 223: * FUNCTION: DLLDlgProc (standard dialog procedure INPUTS/RETURNS) 224: * 1.1.1.2 root 225: \******************************************************************************/ 1.1 root 226: 1.1.1.2 root 227: LRESULT CALLBACK DLLDlgProc (HWND hDlg, UINT msg, WPARAM wParam, LPARAM lParam) 228: { 229: switch (msg) 230: { 1.1 root 231: case WM_COMMAND: 1.1.1.2 root 232: 1.1 root 233: EndDialog(hDlg, TRUE); 234: return (TRUE); 235: } 236: return (FALSE); 237: }
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