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Old June 15th, 2004, 06:45 PM
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Default calling subroutine from different module?

I have a sub in a module. I'm calling that sub from form"A". Form "A" has a subform"B" . Subform"B" has some code in it as well. From form "A" I want to call sub from module, then set forcus or whatever I need to do to start calling functions from subform"B" which are specific to subform "B". In other words I can't put these in module because they need to run in form "B"
Any Ideas?
Thanks
Raif

 
Old June 15th, 2004, 11:33 PM
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Sometimes it helps to think of Access forms as the class modules they are, and to treat them in a more "object-oriented" manner (i.e., by working with user-defined properties and methods).

================================================== ========
Code behind Sub Form - FormB:
Defines properties and methods that can be called from the Main Form - FormA

Option Compare Database

' Module level data member variable.
Dim m_Test As String

' Public methods.
Public Sub TestSubProcedure(strInitialize As String)
   MsgBox "This is the initial string"
End Sub

Public Sub TestSubProcedure2()
   MsgBox m_Test
End Sub

' Public property.
Public Property Get TestPropertyProcudure() As String
    TestProperty = m_Test
End Property

Public Property Let TestPropertyProcudure(TestValue As String)
    m_Test = TestValue
End Property
================================================== ========

================================================== ========
Code behind Main Form - FormA:
Calls properties and methods in the Sub Form - FormB

Private Sub cmdExecuteSubFormProc_Click()

    ' Call your public routine in the standard module here...

    ' Call public method in sub form passing in argument. Displays
    ' MessageBox - "This is the initial string"
    Me("FormB").Form.TestSubProcedure ("This is the initial string.")

    ' Initialize a module level data member variable in the sub form
    ' using a property procedure.
    Me("FormB").Form.TestPropertyProcudure = "This is initialized string."

    ' Call public method in sub form that processes the initialized data
    ' member variable. Displays MessageBox - "This is initialized string."
    Me("FormB").Form.TestSubProcedure2

End Sub
================================================== ========

Be sure your sub form procedures are defined as PUBLIC.

Just as an aside, a new instance of an Access form can always be instantialted and used with the following syntax:

Dim frm As Form
Set frm = New Form_FormB

' initialize user-defined property
frm.AProperty = aValue

' call user-defined method
frm.AMethod

Should look real familiar to the Visual Studio crowd.

 
Old June 15th, 2004, 11:56 PM
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I notice I forgot one piece: retrieving the data member value of the form instance via the GET accessor method. First fix the GET accessor's definition in FormB. It should look like this:

Public Property Get TestPropertyProcudure() As String
    TestPropertyProcudure = m_Test
End Property

I didn't assign the return value to the correct procedure name.

Then add the following to the end of the FormA module:

' Retrieve the stored data member value from the form instance.
Dim propertyValue As String
propertyValue = Me("frmFormB").Form.TestPropertyProcudure
MsgBox propertyValue

Hope some of this helps.

Bob






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