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Peter 2002-11-27 00:44
Hello,
I have 2 video cards in my system, a GForce3 AGP and a GForce2 PCI. The AGP one is set as my primary, the PCI one is not attached to the desktop. I'm using Windows XP SP1.
When I enumerate the DirectDraw devices, the PCI card is not enumerated (only the primary card is enumerated). However, when I attach the PCI one to the desktop all cards are enumerated.
My function call :
BOOL WINAPI Callback(GUID FAR *lpGUID, LPSTR lpDriverDescription, LPSTR lpDriverName, LPVOID lpContext, HMONITOR hm)
{
char buffer[256];
MessageBoxEx(NULL, lpDriverDescription, NULL, MB_OK, NULL);
return DDENUMRET_OK;
}
DirectDrawEnumerateEx(Callback, NULL, DDENUM_NONDISPLAYDEVICES | DDENUM_ATTACHEDSECONDARYDEVICES | DDENUM_DETACHEDSECONDARYDEVICES);
I specify the flag DDENUM_DETACHEDSECONDARYDEVICES, so why is the non-attached card not enumerated? Any ideas?
Greetings.
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Christian Studer 2002-11-27 08:43
I don't know why the function doesn't enumerate the detached monitor, but you wouldn't be able to use it anyway, independent displays can't be used through DirectX on Win2000/XP.
I would recommend using EnumDisplayDevices if you want to enumerate all installed displays, independent of whether they are enabled or not.
Christian Studer - www.realtimesoft.com
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