参数定义

1         class NativeMethods 2         { 3             public const int WM_NCHITTEST = 0x84; 4             public const int HTCAPTION = 2; 5             public const int HTLEFT = 10; 6             public const int HTRIGHT = 11; 7             public const int HTTOP = 12; 8             public const int HTTOPLEFT = 13; 9             public const int HTTOPRIGHT = 14;10             public const int HTBOTTOM = 15;11             public const int HTBOTTOMLEFT = 16;12             public const int HTBOTTOMRIGHT = 17;13         }

 

加hook

1 IntPtr windowHandle = new WindowInteropHelper(win).Handle;2  HwndSource windowSource = HwndSource.FromHwnd(windowHandle);3 windowSource.RemoveHook(WndProc);

 

1  private static IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled) 2         { 3             int GripSize = 16; 4             int BorderSize = 7; 5             Window win = (Window)System.Windows.Interop.HwndSource.FromHwnd(hwnd).RootVisual; 6             if (msg == NativeMethods.WM_NCHITTEST) 7             { 8                 int x = lParam.ToInt32() << 16 >> 16, y = lParam.ToInt32() >> 16; 9                 Point pos = win.PointFromScreen(new Point(x, y));10 11                 //bottom12                 if (pos.X > GripSize &&13                     pos.X < win.ActualWidth - GripSize &&14                     pos.Y >= win.ActualHeight - BorderSize)15                 {16                     handled = true;17                     return (IntPtr)NativeMethods.HTBOTTOM;18                 }19 20                 //Right21                 if (pos.Y > GripSize &&22                     pos.X > win.ActualWidth - BorderSize &&23                     pos.Y < win.ActualHeight - GripSize)24                 {25                     handled = true;26                     return (IntPtr)NativeMethods.HTRIGHT;27                 }28 29                 // Top, Left, Right, Corners, Etc.30                 //HTBOTTOMRIGHT31                 if (pos.X > win.ActualWidth - GripSize &&32                    pos.Y >= win.ActualHeight - GripSize)33                 {34                     handled = true;35                     return (IntPtr)NativeMethods.HTBOTTOMRIGHT;36                 }37             }38 39             return IntPtr.Zero;40         }