D3DENUMDEVICESCALLBACK

typedef HRESULT (FAR PASCAL * LPD3DENUMDEVICESCALLBACK)

(LPGUID lpGuid, LPSTR lpDeviceDescription,

LPSTR lpDeviceName, LPD3DDEVICEDESC lpD3DHWDeviceDesc,

LPD3DDEVICEDESC lpD3DHELDeviceDesc, LPVOID lpUserArg);

Prototype definition for the callback function to enumerate installed Direct3D devices.

·Applications should return one of the following values:

D3DENUMRET_CANCEL

Cancel the enumeration.

D3DENUMRET_OK

Continue the enumeration.

lpGuid

Address of a globally unique identifier (GUID).

lpDeviceDescription

Address of a textual description of the device.

lpDeviceName

Address of the device name.

lpD3DHWDeviceDesc

Address of a D3DDEVICEDESC structure that contains the hardware capabilities of the Direct3D device.

lpD3DHELDeviceDesc

Address of a D3DDEVICEDESC structure that contains the emulated capabilities of the Direct3D device.

lpUserArg

Address of application-defined data passed to this callback function.

When determining the order in which to call callback functions, the system searches the objects highest in the hierarchy first, and then calls their callback functions in the order in which they were created.