private void AllowUserToMoveWindowByDragging()
{
//Lots of low level windows BS
MouseHook.HookWindow((WM code) =>
{
if (code == WM.MOUSEMOVE || code == WM.NCMOUSEMOVE)
{
if (_bMouseDown)
{
System.Drawing.Point curMouse = MouseHook.GetMousePosition();
if (_vLastMouse != null)
{
System.Drawing.Point delta = new System.Drawing.Point(
_vLastMouse.Value.X - curMouse.X,
_vLastMouse.Value.Y - curMouse.Y);
Top -= delta.Y;
Left -= delta.X;
}
_vLastMouse = new System.Drawing.Point(curMouse.X, curMouse.Y);
}
}
});
}
public static void HookWindow(Action <WM> callback)
{
_callback = callback;
_hookProc = (int code, IntPtr wParam, IntPtr lParam) =>
{
if (code < 0)
{
//you need to call CallNextHookEx without further processing
//and return the value returned by CallNextHookEx
return(MouseHook.CallNextHookEx(IntPtr.Zero, code, wParam, lParam));
}
WM message = (WM)wParam.ToInt32();
_callback(message);
return(MouseHook.CallNextHookEx(IntPtr.Zero, code, wParam, lParam));;
};
//Hooks the mouse into the application window.
SetWindowsHookEx(
HookType.WH_MOUSE,
_hookProc,
IntPtr.Zero,
GetCurrentThreadId());
}
private void _MoveWindow_MouseDown(object sender, MouseButtonEventArgs e)
{
System.Drawing.Point curMouse = MouseHook.GetMousePosition();
_vLastMouse = new System.Drawing.Point(curMouse.X, curMouse.Y);
_bMouseDown = true;
}
