DirectX SDK

CONST_DDDEVICEIDFLAGS

The CONST_DDDEVICEIDFLAGS enumeration is used in the flags parameter of the DirectDraw7.GetDeviceIdentifier method to return information about the host (typically 2-D) adapter in a system equipped with a stacked secondary 3-D adapter.

Enum CONST_DDDEVICEIDFLAGS
    DDGDI_DEFAULT           = 0
    DDGDI_GETHOSTIDENTIFIER = 1
End Enum
DDGDI_DEFAULT
Perform a normal enumeration on the host adapter.
DDGDI_GETHOSTIDENTIFIER
Causes the method to return information about the host (typically 2-D) adapter in a system equipped with a stacked secondary 3-D adapter. Such an adapter appears to the application as if it were part of the host adapter, but is typically located on a separate card. When the dwFlags parameter is 0, the stacked secondary's information is returned because this most accurately reflects the qualities of the DirectDraw object involved.