该用户控件显示一个只读文本框，其中有一个数字和两个箭头，用户可以单击这两个箭头来增加和减少文本框中的值。

The user control displays a read-only text box with a number in it and two arrows that users can click to increment and decrement the value in the text box.

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groupbox可以方便地组织状态条目，每个条目都是只读的文本框，目前的默认值是一个虚拟值。

A groupbox comes in handy for organizing the stats entries, each of which is a read-only text box defaulting to a dummy value for now.

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