Hello zhgwyh,
The toolbar instrument driver is location in <CVI folder>\toolslib\custctrl\toolbar.fp. Toolbars are not accessible through the user interface editor, so you manually have to load the toolbar instrument driver into your project. Once you do this, you will be able to use the various toolbar functions (Toolbar_New, Toolbar_InsertItem, Toolbar_Display, Toolbar_SetItem), and as josswern mentioned, you might want to take a look at the toolbar shipping example as a start.
Thanks.
Wendy L
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