protected override void WndProc(ref Message m) { const int WM_SYSCOMMAND = 0x0112; const int SC_CLOSE = 0xF060; if (m.Msg == WM_SYSCOMMAND && (int) m.WParam == SC_CLOSE) { // 屏蔽传入的消息事件 this.WindowState = FormWindowState.Minimized; return; } base.WndProc(ref m); }
protected override void WndProc(ref Message m) { const int WM_SYSCOMMAND = 0x0112; const int SC_CLOSE = 0xF060; const int SC_MINIMIZE = 0xF020; if (m.Msg == WM_SYSCOMMAND && ((int)m.WParam == SC_MINIMIZE || (int)m.WParam == SC_CLOSE)) { //最小化到系统栏 this.Hide(); return; } base.WndProc(ref m); }
重写 WndProc函数来同时实现无标题栏的窗体移动和禁止双击窗体最大化
protected override void WndProc(ref Message m) { const int WM_NCHITTEST = 0x84; const int HTCLIENT = 0x01; const int HTCAPTION = 0x02; const int WM_SYSCOMMAND = 0x112; const int SC_MAXMIZE = 0xF030; const int WM_NCLBUTTONDBLCLK = 0xA3; switch (m.Msg) { case 0x4e: case 0xd: case 0xe: case 0x14: base.WndProc(ref m); break; case WM_NCHITTEST://鼠标点任意位置后可以拖动窗体 this.DefWndProc(ref m); if (m.Result.ToInt32() == HTCLIENT) { m.Result = new IntPtr(HTCAPTION); return; } break; case WM_NCLBUTTONDBLCLK://禁止双击最大化 Console.WriteLine(this.WindowState); return; break; default: base.WndProc(ref m); break; } }