instructing a button to do something

Hi,

On my form I have 3 buttons - Biology, Physics, Chemistry. There is also another button, cmddiagram. If and when clicked this will give a form2 with a diagram of the topic in question : if biology is clicked, then it gives a diagram on biology, if physics is clicked...etc

Okay, the problem is that there is only one diagram button, and it can only show one particular diagram at a time - biology, physics or chemistry (depending on which of these has been clicked).

So I plan putting the code for each in a module. The buttons have code as follows:

Private sub cmdBiology_click()
Call Biology
end sub


Private sub cmdPhysics_click()
Call Physics
end sub


Private sub Chemistry()
Call Chemistry
end sub


My problem is, though, that I don't know how to fit the cmddiagram into all this. In my module, for instance, I have:

Public sub Biology()
'I don't know what code goes here, something
'like: if cmddiagram clicked = true Then
Form2!Show
Form2!Controls.Add "VB.line", "line1"
Form2!line1.X1 = 1560
Form2!line1.X2 = 1560
Form2!line1.Y1 = 1800
Form2!line1.Y2 = 4800
Form2!line1.Visible = True
End Sub


Any help or advice on this topic would be appreciated.

:confused: By button, do you mean a command button or a checkbox or a Radiobutton? I don't quite understand the question
If you mean there is a command button called cmdDiagram, and the other three are radiobuttons, then you'll need to do it like this:

Code:

---

Private Sub cmdDiagram_Click()
  If cmdBiology.Value=1 then Biology
  If cmdPhysics.Value=1 then Physics
  If cmdChemistry.Value=1 then Chemistry
End Sub

---

Replace your Biology, Physics and Chemistry buttons with radio buttons in a frame so that they will be mutually exclusive. Then when cmdDiagram is clicked it's an easy matter to determine which radio button was selected and based on that, to call the appropriate routine.

Andrew,

Thanks for the reply. I meant command buttons. There are four of them - cmdBiology, cmdPhysics, cmdChemistry and cmdDiagram.

CmdDiagram will show a different diagram, depending on which one of the 3 other has been clicked. I'm sure this is possible, isn't it?

of course its possible, it sould be something like this:
[code]

dim strSubject as string
Private sub cmdBiology_click()
strSubject = "Biology"
end sub


Private sub cmdPhysics_click()
strSubject = "Physics"
end sub


Private sub Chemistry()
strSubject = "Chemistry"
end sub

Private Sub cmdDiagram_Click()

Eelect case strSubject

case "Biology"
'Show your Biology Form

case "Physics"
'Show your Physics Form

case "Chemistry"
'Show your Chemistry Form

End Select

End Sub


hope this works

Code:

---

'general declarations
Dim BioPhysChem(2) As Boolean

Private Sub cmdBiology_Click()
BioPhysChem(0) = True
BioPhysChem(1) = False
BioPhysChem(2) = False
End Sub

Private Sub cmdPhysics_Click()
BioPhysChem(1) = True
BioPhysChem(2) = False
BioPhysChem(0) = False
End Sub

Private Sub cmdChemistry_Click()
BioPhysChem(2) = True
BioPhysChem(0) = False
BioPhysChem(1) = False
End Sub

Private Sub cmdDiagram_Click()
Select Case True
Case BioPhysChem(0)
' biology code
Case BioPhysChem(1)
'physics code
Case BioPhysChem(2)
' chemistry code
End Select
End Sub

---

this is more work then necesary, you COULD use an option button,
it would be simpler, and there would be less code, but this works too.