ToolStrip控件在窗体没有焦点的情况下,需要单击二次才能够激发事件的解决办法

        protected override void WndProc(ref Message m)
        {
            if (m.Msg == 0x210)
            {
                Control control = Control.FromChildHandle(m.HWnd);
                int lparam = (int)m.LParam;
                int x = lparam & 0xffff;
                int y = (int)((lparam & 0xffff0000) >> 16);
                Point mousePoint = new Point(x, y);
                ToolStripContainer toolStripContainer = control.GetChildAtPoint(mousePoint) as ToolStripContainer;
                if (toolStripContainer != null)
                {
                    Control ccontrol = toolStripContainer.GetChildAtPoint(mousePoint);
                    ToolStripPanel toolStripPanel = ccontrol as ToolStripPanel;
                    if (toolStripPanel != null)
                    {
                        Control toolStripPanelControl = toolStripPanel.GetChildAtPoint(toolStripPanel.PointToClient(control.PointToScreen(mousePoint)));
                        if (toolStripPanelControl != null)
                        {
                            ToolStrip toolStrip = toolStripPanelControl as ToolStrip;
                            if (toolStrip != null)
                            {
                                ToolStripItem toolStripItem = toolStrip.GetItemAt(toolStrip.PointToClient(control.PointToScreen(mousePoint)));
                                if (toolStripItem != null)
                                {
                                    toolStripItem.PerformClick();
                                    return;
                                }
                            }
                        }
                    }
                }
            }
            base.WndProc(ref m);
        }

　　在一个控件里有ToolStrip，子窗体弹出的时候，点击ToolStripItem第一次没有反应，

需要点击2次才能工作的解决办法。