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treMouse_close.cbSize = sizeof(TRACKMOUSEEVENT);
treMouse_close.hwndTrack = hwndClose;
treMouse_close.dwFlags = TME_HOVER | TME_LEAVE ;
treMouse_close.dwHoverTime = 10000;
_TrackMouseEvent(&treMouse_close);
btnOld_close = (WNDPROC)SetWindowLongPtr(hwndClose, GWLP_WNDPROC, (LONG_PTR)closeButtonSubclassProc);