How can I tell when the default textbox context menu is about to open (before it opens) or after it has closed (not before, after)? The ContextMenuOpening and ContextMenuClosing events don't seem to fire when I'm using the standard, built-in menu. I'm guessing I could simply recreate the menu and populate it with standard commands, but that does seem to be a bit overkill.How can I tell when the default textbox context
阅读背景：
如何判断默认文本框上下文菜单何时打开或关闭？
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