VC自动换行显示字符串，当窗口被缩小时，窗口内的文字将自动换行显示，以避免因窗口缩小而看不到文字，运行效果请看截图，若文字超出窗体宽度，则将自动换行显示。-VC wrap display string, when the window is narrow, the text in the window display will automatically wrap to avoid narrowing the window and see the text, see the screenshot