关于对话框按钮的操作功能实现，讲解组合框（如何调整组合框的大小）、列表框、单选按钮、复选按钮等常用对话框控件的多种使用方法-Button on the dialog to achieve the operational capabilities to explain the combo box (combo box to adjust the size), list boxes, radio buttons, check buttons and other common dialog contr