SplitButton

代码说明：

  XP样式拆分按钮控件，按钮右边有下拉按钮，可以绑定及弹出菜单。用Delphi打开后可以正常安装使用。(XP style controls the right side of the split button, the button has drop-down button, you can bind and pop-up menu opens with Delphi normal installation.)