ScreenToClient

A version of this page is also available for

Windows Embedded CE 6.0 R3

4/8/2010

This function converts the screen coordinates of a specified point on the screen to client coordinates.

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 Value

Nonzero indicates success. Zero indicates failure.

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 ScreenToClient function assumes the specified point is in screen coordinates.

All coordinates are in device units.

Regardless of the screen's layout settings, ScreenToClient always interprets coordinates as if the screen layout is left-to-right. Do not use this function if your screen has a right-to-left layout. Instead, use MapWindowPoints.

Requirements

See Also

Reference

ClientToScreen
MapWindowPoints
POINT