LPDDHAL_GETSCANLINE (Windows CE 5.0)
This callback function gets the current scan line.
typedef DWORD (* LPDDHAL_GETSCANLINE)( LPDDHAL_GETSCANLINEDATA lpgsld);
Parameters
- lpgsld
[in, out] Pointer to a DDHAL_GETSCANLINEDATA structure that contains the scan line information.
Return Values
Returns one of the following values:
Remarks
The returned scan line value in the dwScanLine member of the DDHAL_GETSCANLINEDATA structure must be 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 any scan lines that occur during vertical blank. For example, if you are running at a screen resolution of 640x480, and you have 12 scan lines during vertical blank, the values returned by GetScanLine could range from 0 to 491.
An example implementation of this callback function, named GetScanLine32, can be found in the sample IGS driver source code.
Requirements
OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.
Header: Ddrawi.h.
Link Library: Developer implemented.
See Also
DirectDraw Display Driver Callback Functions | DDHAL_GETSCANLINEDATA | DDHAL_DRIVER_HANDLED | DDHAL_DRIVER_NOTHANDLED
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