The BN_UNPUSHED notification message is sent when the push state of a button is set to unpushed. The parent window of the button receives this notification message through the WM_COMMAND message.
BN_PUSHED
BN_UNPUSHED is the same as the BN_UNHILITE notification message.
This notification message is provided for compatibility with applications written for versions of Windows earlier than version 3.0. New applications should use the BS_OWNERDRAW button style and the DRAWITEMSTRUCT structure for this task.
BN_PUSHED, DRAWITEMSTRUCT, WM_COMMAND, WM_DRAWITEM
file: /Techref/os/win/api/win32/mess/src/msg01_8.htm, 1KB, , updated: 2000/4/7 11:19, local time: 2024/12/27 03:33,
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