protected override void OnNonClientMouseDown(NonClientMouseEventArgs args)
{
if (args.Button != MouseButtons.Left)
{
return;
}
switch (args.HitTest)
{
case (int)NativeMethods.NCHITTEST.HTCLOSE:
{
//NativeMethods.POINT pt = NativeMethods.POINT.FromPoint(args.Location);
if (DepressButton(closeButton))
{
NativeMethods.SendMessage(this.Handle,
(int)NativeMethods.WindowMessages.WM_SYSCOMMAND,
(IntPtr)NativeMethods.SystemCommands.SC_CLOSE, IntPtr.Zero);
}
args.Handled = true;
break;
}
case (int)NativeMethods.NCHITTEST.HTMINBUTTON:
{
// NativeMethods.POINT pt = NativeMethods.POINT.FromPoint(args.Location);
if (DepressButton(minimizeButton))
{
NativeMethods.SendMessage(this.Handle,
(int)NativeMethods.WindowMessages.WM_SYSCOMMAND,
(IntPtr)NativeMethods.SystemCommands.SC_MINIMIZE, IntPtr.Zero);
}
args.Handled = true;
break;
}
case (int)NativeMethods.NCHITTEST.HTMAXBUTTON:
{
if (DepressButton(maximizeButton))
{
int sc = (WindowState == FormWindowState.Maximized)?
(int)NativeMethods.SystemCommands.SC_RESTORE : (int)NativeMethods.SystemCommands.SC_MAXIMIZE;
NativeMethods.SendMessage(this.Handle,
(int)NativeMethods.WindowMessages.WM_SYSCOMMAND,
(IntPtr)sc, IntPtr.Zero);
}
args.Handled = true;
break;
}
}
//TODO: handle other buttons if exist
}
private void WmNCLButtonDown(ref Message msg)
{
Point pt = this.PointToWindow(new Point(msg.LParam.ToInt32()));
NonClientMouseEventArgs args = new NonClientMouseEventArgs(
MouseButtons.Left, 1, pt.X, pt.Y, 0, msg.WParam.ToInt32());
OnNonClientMouseDown(args);
if (!args.Handled)
{
DefWndProc(ref msg);
}
msg.Result = NativeMethods.TRUE;
}
/// <summary>
/// Called each time one of the mouse buttons was pressed over the non-client area.
/// </summary>
/// <param name="args">NonClientMouseEventArgs contain mouse position, button pressed,
/// and hit-test code for current position. </param>
protected virtual void OnNonClientMouseDown(NonClientMouseEventArgs args)
{
}