This example adds a custom control to the command bar named "Custom". The example sets the height of the custom control to twice the height of the command bar and sets its width to 50 pixels. Notice how the command bar automatically resizes itself to accommodate the control.
Set myBar = CommandBars("Custom")
barHeight = myBar.Height
Set myControl = myBar.Controls _
.Add(Type:=msoControlButton, _
Id:= CommandBars("Standard").Controls("Save").Id, _
Temporary:=True)
With myControl
.Height = barHeight * 2
.Width = 50
End With
myBar.Visible = True