CDC::SetWindowExt

virtual CSize SetWindowExt( int cx, int cy );

virtual CSize SetWindowExt( SIZE size );

Return Value

The previous extents of the window (in logical units) as a CSize object. If an error occurs, the x- and y-coordinates of the returned CSize object are both set to 0.

Parameters

cx

Specifies the x-extent (in logical units) of the window.

cy

Specifies the y-extent (in logical units) of the window.

size

Specifies the x- and y-extents (in logical units) of the window.

Remarks

Sets the x- and y-extents of the window associated with the device context. The window, along with the device-context viewport, defines how GDI maps points in the logical coordinate system to points in the device coordinate system.

When the following mapping modes are set, calls to SetWindowExt and SetViewportExt functions are ignored:

• MM_HIENGLISH
  
  
• MM_HIMETRIC
  
  
• MM_LOENGLISH
  
  
• MM_LOMETRIC
  
  
• MM_TEXT
  
  
• MM_TWIPS

When MM_ISOTROPIC mode is set, an application must call the SetWindowExt member function before calling SetViewportExt.

CDC Overview |  Class Members |  Hierarchy Chart

See Also   CDC::GetWindowExt, CDC::SetViewportExt, CSize