为什么在前面板上用方向键把控件拖到选项卡上结果会在每个选项卡上显示控件

[chengjiuweiye]

为什么在前面板上用方向键把控件拖到选项卡上结果会在每个选项卡上显示控件，而且控件还有阴影？如果用鼠标移动则只在一个选项卡上显示

[zou]

Because the control not part of the tab control. It's just floating on the top of the tab control. The shadow is telling you that. Only when dragged with the cursor, the control is part of the tab.

[chengjiuweiye]

谢谢，我明白了