Step:
1. Create base command, base tool
2. add command, tool vào toolbar
3. run app
Code:
AxToolbarControl1.AddItem(New Cmdthemlop, 0, 0, False, 0, esriCommandStyles.esriCommandStyleIconOnly)
AxToolbarControl1.AddItem(New ToolSelected, 0, 1, False, 0, esriCommandStyles.esriCommandStyleIconOnly)
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