private void ShowContextMenu()
{
if (ContextMenu == null && ContextMenuStrip == null)
{
return;
}
NativeMethods.Point p = new NativeMethods.Point();
NativeMethods.GetCursorPos(ref p);
NativeMethods.SetForegroundWindow(new HandleRef(_window, _window.Handle));
if (ContextMenu != null)
{
ContextMenu.GetType().InvokeMember("OnPopup",
BindingFlags.NonPublic | BindingFlags.InvokeMethod |
BindingFlags.Instance, null, ContextMenu,
new object[] { EventArgs.Empty });
NativeMethods.TrackPopupMenuEx(new HandleRef(ContextMenu, ContextMenu.Handle), 72, p.X, p.Y, new HandleRef(_window, _window.Handle), IntPtr.Zero);
NativeMethods.PostMessage(new HandleRef(_window, _window.Handle), WM_NULL, 0, 0);
return;
}
ContextMenuStrip?.GetType().InvokeMember("ShowInTaskbar",
BindingFlags.NonPublic | BindingFlags.InvokeMethod |
BindingFlags.Instance, null, ContextMenuStrip, new object[] { p.X, p.Y });
}
protected virtual void OnMouseUp(object o, MouseEventArgs e)
{
if (MouseUp != null)
{
MouseUp(this, e);
}
if (e.Button == MouseButtons.Right && _contextMenu != null)
{
Win32.NativeMethods.POINT p = new Win32.NativeMethods.POINT();
Win32.NativeMethods.GetCursorPos(out p);
// See Q135788 in the Microsoft Knowledge Base for more info.
Win32.NativeMethods.SetForegroundWindow(new HandleRef(_messages, _messages.Handle));
// we cannot call _contextMenu.Show(control, point): we don't have a control reference
Type ctxType = _contextMenu.GetType();
try
{
ctxType.InvokeMember("OnPopup", BindingFlags.InvokeMethod | BindingFlags.NonPublic | BindingFlags.Instance, null, _contextMenu, new object[] { EventArgs.Empty });
Win32.NativeMethods.TrackPopupMenuEx(new HandleRef(ContextMenu, ContextMenu.Handle), 0, p.x, p.y, new HandleRef(_messages, _messages.Handle), IntPtr.Zero);
Win32.NativeMethods.PostMessage(new HandleRef(_messages, _messages.Handle), (uint)Win32.NativeMethods.Message.WM_NULL, IntPtr.Zero, IntPtr.Zero);
// clicks handled in this.OnPerformContextMenuClick()...
}
catch { }
}
}
private void ProcessInitMenuPopup(ref Message message)
{
if (ContextMenuStrip != null &&
(bool)ContextMenuStrip.GetType().InvokeMember("ProcessInitMenuPopup", BindingFlags.NonPublic | BindingFlags.InvokeMethod | BindingFlags.Instance, null, ContextMenuStrip, new object[] { message.WParam }))
{
return;
}
_window.DefWndProc(ref message);
}
private void ShowContextMenu()
{
if (ContextMenuStrip == null)
{
return;
}
NativeMethods.Point p = new NativeMethods.Point();
NativeMethods.GetCursorPos(ref p);
NativeMethods.SetForegroundWindow(new HandleRef(_window, _window.Handle));
ContextMenuStrip?.GetType().InvokeMember("ShowInTaskbar",
BindingFlags.NonPublic | BindingFlags.InvokeMethod |
BindingFlags.Instance, null, ContextMenuStrip, new object[] { p.X, p.Y });
}
private void mi_Add_Click(object sender, EventArgs e)
{
MessageBox.Show(contextMenu.GetType().ToString());
btn_Add_Click(sender, e);
}
