GetRegionData.md

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Function name : GetRegionData

Group: Region - Library: gdi32

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Fills the specified buffer with data describing a region. This data includes the dimensions of the rectangles that make up the region.

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Code examples:

Finding parameters for the region specified

Declaration:

DWORD GetRegionData(
  HRGN hRgn,            // handle to region
  DWORD dwCount,        // size of region data buffer
  LPRGNDATA lpRgnData   // region data buffer
);  

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FoxPro declaration:

DECLARE INTEGER GetRegionData IN gdi32;
	INTEGER hRgn,;
	INTEGER dwCount,;
	STRING @ lpRgnData  

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Parameters:

hRgn [in] Handle to the region.

dwCount [in] Specifies the size, in bytes, of the lpRgnData buffer.

lpRgnData [out] Pointer to a RGNDATA structure that receives the information.

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Return value:

If the function succeeds and dwCount specifies an adequate number of bytes, the return value is always dwCount.

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Comments:

A quite usefull function if you need to know geometrical parameters for a region defined by a handle.

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