This function converts the screen coordinates of a specified point on the screen to client coordinates.
At a Glance
| Header file: | Winuser.h |
| Windows CE versions: | 1.0 and later |
Syntax
BOOL ScreenToClient( HWND hWnd, LPPOINT lpPoint);
Parameters
hWnd
Handle to the window whose client area will be used for the conversion.
lpPoint
Long pointer to a POINT structure that contains the screen coordinates to be converted.
Return Values
Nonzero indicates success. Zero indicates failure.
Windows NT: To get extended error information, call GetLastError.
Remarks
The function uses the window identified by the hWnd parameter and the screen coordinates given in the POINT structure to compute client coordinates. It then replaces the screen coordinates with the client coordinates. The new coordinates are relative to the upper-left corner of the specified window’s client area.
The ScreenToClient function assumes the specified point is in screen coordinates.
See Also