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BCB写的一个滑动块图形控件程序.实现拖动滑块的功能(BCB written by a sliding block graphics control procedures. Drag the slider to achieve the function of)
BCB写的一个滑动块图形控件程序.实现拖动滑块的功能(BCB written by a sliding block graphics control procedures. Drag the slider to achieve the function of)