Public Function OpenCalculator_Click()
On Error GoTo Err_OpenCalculator_Click
AppActivate "Calculator", False 'Programs Title Bar Name
Exit_OpenCalculator_Click:
Exit Function
Err_OpenCalculator_Click:
If Err.Number = 5 Then 'Invalid procedure call or argument
Call Shell("C:\Windows\System32\calc.exe", vbNormalFocus)
Else
MsgBox Err.Number & " - " & Err.Description
Resume Exit_OpenCalculator_Click
End If
End Function