windows-nt/Source/XPSP1/NT/printscan/print/drivers/usermode/driverui/initdll.c

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2020-09-26 03:20:57 -05:00
/*++
Copyright (c) 1996 Microsoft Corporation
Module Name:
intidll.c
Abstract:
This file handles the DLLInitialize spooler API
Environment:
Win32 subsystem, DriverUI module, user mode
Revision History:
07/17/96 -amandan-
Created it.
--*/
#include "precomp.h"
//
// Global instance handle and critical section
//
HINSTANCE ghInstance;
CRITICAL_SECTION gCriticalSection;
BOOL WINAPI
DllMain(
HANDLE hModule,
ULONG ulReason,
PCONTEXT pContext
)
/*++
Routine Description:
This function is called when the system loads/unloads the DriverUI module.
At DLL_PROCESS_ATTACH, InitializeCriticalSection is called to initialize
the critical section objects.
At DLL_PROCESS_DETACH, DeleteCriticalSection is called to release the
critical section objects.
Arguments:
hModule handle to DLL module
ulReason reason for the call
pContext pointer to context (not used by us)
Return Value:
TRUE if DLL is initialized successfully, FALSE otherwise.
--*/
{
WCHAR wchDllName[MAX_PATH];
BOOL bKeepDllLoaded = FALSE;
switch (ulReason)
{
case DLL_PROCESS_ATTACH:
#if DBG
if (GetEnvironmentVariable(TEXT("UnloadDriverUiDll"), NULL, 0))
bKeepDllLoaded = FALSE;
#endif
//
// Keep our driver UI dll always loaded in memory
//
if (bKeepDllLoaded && GetModuleFileName(hModule, wchDllName, MAX_PATH))
LoadLibrary(wchDllName);
ghInstance = hModule;
InitializeCriticalSection(&gCriticalSection);
break;
case DLL_PROCESS_DETACH:
DeleteCriticalSection(&gCriticalSection);
break;
}
return TRUE;
}