Sent to a window after its size has changed.
A window receives this message through its WindowProc function.
The type of resizing requested. This parameter can be one of the following values.
The low-order word of lParam specifies the new width of the client area.
The high-order word of lParam specifies the new height of the client area.
If an application processes this message, it should return zero.
Although the width and height of a window are 32-bit values, the lParam parameter contains only the low-order 16 bits of each.
Minimum supported client
|Windows 2000 Professional [desktop apps only]|
Minimum supported server
|Windows 2000 Server [desktop apps only]|