LPtoDP

Overview

Group

Quick Info

Windows NT
Yes
Win95
Yes
Win32s
Yes
Import Library
gdi32.lib
Header File
wingdi.h
Unicode
No
Platform Notes
Windows 95: 16-bit coordinates only

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.