我在Windows 7中从另一个DLL加载dsound.dll时遇到崩溃。以下代码会导致崩溃:
#include <Windows.h>
#include <mmreg.h>
#include <dsound.h>
#include <assert.h>
HRESULT (WINAPI *pDirectSoundEnumerateA)(LPDSENUMCALLBACKA pDSEnumCallback, LPVOID pContext);
HMODULE hDsound;
BOOL CALLBACK DSEnum(LPGUID a, LPCSTR b, LPCSTR c, LPVOID d)
{
return TRUE;
}
void CrashTest()
{
HRESULT hr;
hDsound = LoadLibraryA("dsound.dll");
assert(hDsound);
*(void**)&pDirectSoundEnumerateA = (void*)GetProcAddress(hDsound, "DirectSoundEnumerateA");
assert(pDirectSoundEnumerateA);
hr = pDirectSoundEnumerateA(DSEnum, NULL);
assert(!FAILED(hr));
}
BOOL APIENTRY DllMain(HANDLE hModule,DWORD ul_reason_for_call,LPVOID lpReserved)
{
if (ul_reason_for_call == DLL_PROCESS_ATTACH)
{
DisableThreadLibraryCalls(hModule);
CrashTest();
}
}
使用这个错误代码:
Unhandled exception at ... in ...: 0xC0000005: Access violation reading location 0x00000044.
某些原因它总是为0x44。在Windows XP上或直接从.exe文件加载(而不是从单独的DLL文件加载)时,它可以正常工作。求助!?! :)