protected override void WndProc(ref Message m)
{
if (m.Msg == WM_CONTEXTMENU)
{
if (ContextMenu != null)
{
int ilParam = WinApi.ToInt(m.LParam);
int y = ilParam >> 16;
int x = (short)(ilParam & 0xFFFF);
IntPtr hWnd = m.WParam;
if (hWnd == IntPtr.Zero)
hWnd = m.HWnd;
bool context = true;
if (m.HWnd != m.WParam)
context = false;
WmContextEventArgs e = new WmContextEventArgs(hWnd, x, y, ((x == -1 && y == -1) ? MouseButtons.None : MouseButtons.Right), context, m.HWnd);
ContextMenu(this, e);
if (e.Handled)
return;
}
}
// This case was taken out becouse the message was not generated for the listview control and possibly for
// treview control so this code was moved to the MouseUp event of the Control see ContextExMouseUp
// else if(m.Msg==WM_RBUTTONUP || m.Msg==WM_NCRBUTTONUP)
// {
// if(ContextMenu!=null)
// {
// int ilParam=m.LParam.ToInt32();
// int y=ilParam>>16;
// int x=ilParam & 0xFFFF;
// Point p=ParentControl.PointToScreen(new Point(x,y));
// WmContextEventArgs e=new WmContextEventArgs(m.HWnd,p.X,p.Y,MouseButtons.Right,false);
// ContextMenu(this,e);
// }
// }
base.WndProc(ref m);
}
private void OnContextMenu(object sender, WmContextEventArgs e)
{
ContextMessageHandler h = sender as ContextMessageHandler;
if (h == null)
return;
BaseItem contextItem = GetContextExItem(h.ParentControl);
if (contextItem == null)
return;
// Check whether context menu originated elsewhere in particular a Panel which handles MouseUp
if (e.Handle != e.SourceHandle && e.SourceHandle != IntPtr.Zero)
{
Control ctrl = Control.FromChildHandle(e.Handle);
if (ctrl != null && ctrl is Panel && this.GetContextExItem(ctrl) != null) return; // WM_CONTEXT bubbles up and Panel handles MouseUp
}
// Find it in pop-ups
PopupItem popup = contextItem as PopupItem;
popup.Style = this.Style;
if (e.Button == MouseButtons.None)
{
// Get the control with focus
Control ctrl = Control.FromChildHandle(e.Handle);
if (ctrl != null && ctrl.Handle != e.Handle)
{
ctrl = FindControl(ctrl, e.Handle);
}
popup.SetSourceControl(h.ParentControl);
if (ctrl != null)
{
if (ctrl.ClientRectangle.Contains(ctrl.PointToClient(Control.MousePosition)))
popup.Popup(Control.MousePosition);
else
popup.Popup(ctrl.PointToScreen(Point.Empty));
}
else
popup.Popup(Control.MousePosition);
// We need to eat the message in OnSysKeyUp for Shift+F10 case
if (this.IgnoreSysKeyUp)
{
this.IgnoreSysKeyUp = false;
this.EatSysKeyUp = true;
}
}
else
{
// This is handled by the WM_RBUTTONUP just eat it
if (!e.WmContext)
{
popup.SetSourceControl(h.ParentControl);
popup.Popup(e.X, e.Y);
}
}
e.Handled = true;
}
