DRVPROC.C

/************************************************************************** 
 * 
 *  THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY 
 *  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE 
 *  IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A PARTICULAR 
 *  PURPOSE. 
 * 
 *  Copyright 1992 - 1998 Microsoft Corporation.  All Rights Reserved. 
 * 
 **************************************************************************/ 
/**************************************************************************** 
 * 
 *   drvproc.c 
 * 
 ***************************************************************************/ 
 
#include <windows.h> 
#include <windowsx.h> 
#include <mmsystem.h> 
#include <vfw.h> 
 
#include "TxtOut.h" 
 
HMODULE ghModule; 
 
/*************************************************************************** 
 * 
 * DriverProc The entry point for an installable driver. 
 * 
 ***************************************************************************/ 
 
LRESULT WINAPI DriverProc( 
DWORD dwDriverID, 
HDRVR hDriver, 
UINT uiMessage, 
LPARAM lParam1, 
LPARAM lParam2) 
{ 
INSTINFO *pi = (INSTINFO *)(UINT)dwDriverID; 
 
switch (uiMessage) 
{ 
case DRV_LOAD: 
return (LRESULT) Load(); 
 
case DRV_FREE: 
Free(); 
return (LRESULT)1L; 
 
case DRV_OPEN: 
// if being opened with no open struct, then return a non-zero 
// value without actually opening 
if (lParam2 == 0L) 
return 0xFFFF0000; 
 
return (LRESULT)(DWORD)(UINT)Open((ICOPEN FAR *) lParam2); 
 
      case DRV_CLOSE: 
      if (dwDriverID != 0xFFFF0000) 
          Close(pi); 
 
return (LRESULT)1L; 
 
/********************************************************************* 
 
state messages 
 
*********************************************************************/ 
 
case DRV_QUERYCONFIGURE: // configuration from drivers applet 
return (LRESULT)0L; 
 
case DRV_CONFIGURE: 
return DRV_OK; 
 
case ICM_CONFIGURE: 
// 
// return ICERR_OK if you will do a configure box, error otherwise 
// 
if (lParam1 == -1) 
return QueryConfigure(pi) ? ICERR_OK : ICERR_UNSUPPORTED; 
else 
return Configure(pi, (HWND)lParam1); 
 
case ICM_ABOUT: 
// 
// return ICERR_OK if you will do a about box, error otherwise 
// 
if (lParam1 == -1) 
return QueryAbout(pi) ? ICERR_OK : ICERR_UNSUPPORTED; 
else 
return About(pi, (HWND)lParam1); 
 
case ICM_GETSTATE: 
return GetState(pi, (LPVOID)lParam1, (DWORD)lParam2); 
 
case ICM_SETSTATE: 
return SetState(pi, (LPVOID)lParam1, (DWORD)lParam2); 
 
case ICM_GETINFO: 
return GetInfo(pi, (ICINFO FAR *)lParam1, (DWORD)lParam2); 
 
/********************************************************************* 
 
draw messages 
 
*********************************************************************/ 
 
case ICM_DRAW_QUERY: 
return DrawQuery(pi, (LPVOID FAR *)lParam1); 
 
case ICM_DRAW_BEGIN: 
return DrawBegin(pi,(ICDRAWBEGIN FAR *)lParam1, (DWORD)lParam2); 
 
case ICM_DRAW: 
return Draw(pi,(ICDRAW FAR *)lParam1, (DWORD)lParam2); 
 
case ICM_DRAW_END: 
return DrawEnd(pi); 
 
/********************************************************************* 
 
standard driver messages 
 
*********************************************************************/ 
 
case DRV_DISABLE: 
case DRV_ENABLE: 
return (LRESULT)1L; 
 
case DRV_INSTALL: 
case DRV_REMOVE: 
return (LRESULT)DRV_OK; 
} 
 
if (uiMessage < DRV_USER) 
return DefDriverProc(dwDriverID, hDriver, uiMessage, 
lParam1,lParam2); 
else 
return ICERR_UNSUPPORTED; 
} 
 
/**************************************************************************** 
 * 
 * DllMain Library initialization code. 
 * 
 ***************************************************************************/ 
APIENTRY DllMain(HANDLE, DWORD, LPVOID); 
APIENTRY DllMain( 
HANDLE hModule, 
DWORD dwReason, 
LPVOID lpReserved ) 
{ 
switch( dwReason) 
{ 
case DLL_PROCESS_ATTACH: 
if(ghModule == NULL) 
ghModule = (HMODULE)hModule; 
break; 
case DLL_THREAD_ATTACH: 
break; 
case DLL_THREAD_DETACH: 
break; 
case DLL_PROCESS_DETACH: 
break; 
} 
return TRUE; 
}