利用 keybd_event函数可实现，如下面的代码用以实现在一个公共菜单中模拟Ctrl_F按钮以调用DBGridEH的查找对话框功能：
这是在一个ActionList中的某一Action的OnExecute事件代码。
procedure TDM.act_LocateExecute(Sender: TObject); var   myPopupMenu:TPopupMenu;   MyDBGridEH:TDBGridEh; begin   //ShowMessage(TMenuItem(TAction(Sender).ActionComponent).GetParentComponent.Name);   if (TAction(Sender).ActionComponent).GetParentComponent is TPopupMenu then     myPopupMenu := (TAction(Sender).ActionComponent).GetParentComponent as TPopupMenu   else     Exit;   //ShowMessage(MyPopupMenu.PopupComponent.Name);   if (MyPopupMenu.PopupComponent is TDBGridEh) then   begin     MyDBGridEH := TDBGridEh(MyPopupMenu.PopupComponent);     MyDBGridEH.SetFocus;     keybd_event(VK_Control, MapVirtualKey(VK_Control, 0), 0, 0);       //按下Ctrl键     keybd_event(ord('F'), MapVirtualKey(ord('F'), 0), 0, 0);                    //按下F键     keybd_event(ord('F'), MapVirtualKey(ord('F'), 0), KEYEVENTF_KEYUP, 0);    //放开F键     keybd_event(VK_Control, MapVirtualKey(VK_Control, 0), KEYEVENTF_KEYUP, 0); //放开Ctrl键   end; end;