The DPtoLP function converts device coordinates into logical 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 DPtoLP(
HDC hdc, |
// handle to device context |
LPPOINT lpPoints, |
// pointer to array of points |
int nCount |
// count of points |
); |
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.
The DPtoLP function fails if the device coordinates exceed 27 bits, or if the converted logical coordinates exceed 32 bits. In the case of such an overflow, the results for all the points are undefined.
file: /Techref/os/win/api/win32/func/src/f17_9.htm, 2KB, , updated: 2000/4/7 11:19, local time: 2024/11/5 00:18,
18.216.111.153:LOG IN ©2024 PLEASE DON'T RIP! THIS SITE CLOSES OCT 28, 2024 SO LONG AND THANKS FOR ALL THE FISH!
|
©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions? <A HREF="http://massmind.org/Techref/os/win/api/win32/func/src/f17_9.htm"> DPtoLP</A> |
Did you find what you needed? |
Welcome to massmind.org! |
Welcome to massmind.org! |
.