Appropriate time for wm_exitsizemove to save the window position

Proper time to save the window position

TheWm_exitsizemoveMessage is sent one time to a window, after it has
Exited the moving or sizing modal loop. The window enters the moving or sizing
Modal loop when the user clicks the window's title bar or sizing border, or when
The window passes the wm_syscommand message to
Defwindowproc function and
WparamParameter of the message specifiesSC _movE orSC _sizeValue.
Operation is complete whenDefwindowprocReturns.

A window functions es this message through its windowproc function.