VC如何禁止双击标题栏 - WM_NCLBUTTONDBLCLK消息
重载DefWindowProc()函数，过滤WM_NCLBUTTONDBLCLK在HTCAPTION区的响应即可：
#define WM_NCLBUTTONDBLCLK 0x00A3LRESULT CMainFrame::DefWindowProc(UINT message, WPARAM wParam, LPARAM lParam) {// TODO: Add your specialized code here and/or call the base classswitch(message){case WM_NCLBUTTONDBLCLK: if(HTCAPTION==wParam) { return 0; }} return CFrameWnd::DefWindowProc(message, wParam, lParam);}