D3DENUM
Driver capability flag.
| #define | Value | Description |
| D3DENUM_WHQL_LEVEL | 0x00000002L |
Microsoft Windows Hardware Quality Labs (WHQL) driver testing. This is a time-consuming test requiring a one-second or two-second time penalty. This constant is used by the WHQLLevel member of D3DADAPTER_IDENTIFIER9. Differences between Direct3D 9 and Direct3D 9Ex:D3DENUM_WHQL_LEVEL is deprecated for Direct3D9Ex running on Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2 (or more current operating system). Any of these operating systems return 1 for the WHQL level without checking the status of the driver.
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Constant Information
| Header | d3d9.h |
| Minimum operating system | Windows 98 |
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