获取第一个鼠标扩展按钮的当前状态。

Gets the current state of the first extended mouse button.

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获取或设置当鼠标指针位于控件边框内时按钮工作区的颜色。

Gets or sets the color of the client area of the button when the mouse is pressed within the bounds of the control.

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获取或设置在控件边框内按下鼠标时按钮工作区的颜色。

Gets or sets the color of the client area of the button when the mouse pointer is within the bounds of the control.

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