如果您使用的是Visio 2007，请按照以下步骤操作:

1-选择要在其上添加工具提示的形状.
2单击插入"->形状屏幕提示".
3-在对话框中输入工具提示文本
4-关闭.

全部设置.

If you are using Visio 2007, follow these steps:

1-Select the shape on which you want to add the tool tip.
2-Click on Insert->Shape Screen Tip.
3-Enter the tool tip text on the dialog box
4-Close.

All set.