最終更新:2021-10-10 (日) 07:48:14 (923d)  

GetSystemMenu
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Enables the application to access the window menu (also known as the system menu or the control menu) for copying and modifying.

https://docs.microsoft.com/ja-jp/windows/win32/api/winuser/nf-winuser-getsystemmenu?redirectedfrom=MSDN