| Microsoft DirectX 9.0 |
The GetScanLine method returns the scan line that the monitor is currently updating to the display.
Syntax
HRESULT GetScanLine(
LPDWORD lpdwScanLine
);
Parameters
lpdwScanLine
Points to the DWORD that will contain the scan line the display is currently on.
Return Values
| Value | Description |
| DD_OK | The method succeeded. |
| DDERR_INVALIDOBJECT | DirectDraw received a pointer that was an invalid DirectDraw object. |
| DDERR_INVALIDPARAMS | One or more of the input parameters is invalid. |
| DDERR_UNSUPPORTED | Action not supported. |
| DDERR_VERTICALBLANKINPROGRESS | Vertical blank is in progress. |
See Also