code:
	LONG nStyle = ::GetWindowLong(hEveWnd, GWL_STYLE);
	::SetWindowLong(hEveWnd, GWL_STYLE, (nStyle & ~WS_OVERLAPPEDWINDOW) | WS_POPUP);
	nStyle = ::GetWindowLong(hEveWnd, GWL_EXSTYLE);
	::SetWindowLong(hEveWnd, GWL_EXSTYLE, nStyle & ~WS_EX_CLIENTEDGE);
	::SetWindowPos(hEveWnd, NULL, 0, 0, 1024, 768, SWP_NOZORDER|SWP_NOACTIVATE);