LPtoDP
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.
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