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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. |
| Header | d3d9.h |
|---|---|
| Minimum operating system | Windows 98 |