Sent when an application changes the enabled state of a window. It is sent to the window whose enabled state is changing. This message is sent before the EnableWindow function returns, but after the enabled state (WS_DISABLED style bit) of the window has changed.
A window receives this message through its WindowProc function.
Indicates whether the window has been enabled or disabled. This parameter is TRUE if the window has been enabled or FALSE if the window has been disabled.
This parameter is not used.
If an application processes this message, it should return zero.
Minimum supported client
|Windows 2000 Professional [desktop apps only]|
Minimum supported server
|Windows 2000 Server [desktop apps only]|
Build date: 2/25/2013