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並前往https://stackoverflow.com/questions/68701511/windowfrompoint-doesnt-trigger-wm-nchittest-when-window-is-being-dragged

WindowFromPoint doesn't trigger WM_NCHITTEST when ...

Frankly, I don't understand WHY the window being dragged would be sent WM_NCHITTEST message... Obviously, the result would be HTCAPTION , or it ...

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