Windows Mobile 6.5
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This method retrieves the scan line that is currently being drawn on the monitor.

HRESULT GetScanLine(
  LPDWORD lpdwScanLine


Address of the variable that will contain the scan line the display is currently drawing.

If the method succeeds, the return value is DD_OK.

If the method fails, the return value may be one of the following error values:





For more information on these error codes see DirectDraw Return Values.

Scan lines are reported as zero-based integers.

The returned scan line value is between 0 and n, where scan line 0 is the first visible scan line on the screen and n is the last visible scan line, plus scan lines that occur during the vertical blank period.

So, in a case where an application is running at 640×480, and there are 12 scan lines during the vertical blank period, the values returned by this method will range from 0 to 491.

Windows Embedded CEWindows Embedded CE 6.0 and later
Windows MobilePocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later

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