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LPtoDP info  Overview  Group

The LPtoDP function converts logical coordinates into device coordinates. The conversion depends on the mapping mode of the device context, the settings of the origins and extents for the window and viewport, and the world transformation.

BOOL LPtoDP(

    HDC hdc,

// handle of device context

    LPPOINT lpPoints,

// array of points

    int nCount 

// count of points

   );

Parameters

hdc
Identifies the DC.
lpPoints
Points to an array of POINT structures. The x-coordinates and y-coordinates contained in each of the POINT structures will be transformed.
nCount
Specifies the number of points in the array.

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

This function fails if the logical coordinates exceed 32 bits, or if the converted device coordinates exceed 27 bits. In the case of such an overflow, the results for all the points are undefined.

See Also

DPtoLP, POINT

See also:


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