(2)command1_click()
Da1=val(text1.text) da2=val(text2.text)
Select case combo1.listindex
Case 0
Da3=da1+da2
Case 1
Da3=da1-da2
Case 2
Da3=da1*da2
Case 3
Da3=da1/da2
Endselect
Text3.text=da3
(3)command2_click()
Text1.text=””text2.text=””text3.text=”” text1.setfocus
(4)command3_click()
end
Private Sub Command1_Click()Dim St As String
St = Trim(Text3)Select Case St
Case "+": Text4.Text = Val(Text1.Text) + Val(Text2.Text)
Case "-": Text4.Text = Text1.Text - Text2.Text
Case "*": Text4.Text = Text1.Text * Text2.Text