Dialog function
Dialog( DialogRecord )
Returns a value corresponding to the button the user chooses.
The Dialog() function is used to display the dialog box specified by DialogRecord. DialogRecord is the name of the dialog and must be defined in a preceding Dim statement.
The return value or button:
-1 = OK button    
0 =  Cancel button  
> 0 A command button where 1 is the first PushButton in the definition of the 
dialog and 2 is the second and so on. 
Example
' This sample shows all of the dialog controls on one dialog and how to
' vary the response based on which PushButton was pressed.
 
Sub Main()
   Dim MyList$(2)
   MyList(0) = "Banana"
   MyList(1) = "Orange"
   MyList(2) = "Apple"
   Begin Dialog DialogName1 60, 60, 240, 184, "Test Dialog"
       Text 10, 10, 28, 12, "Name:"
       TextBox 40, 10,50, 12, .joe
       ListBox 102, 10, 108, 16, MyList$(), .MyList1
       ComboBox 42, 30, 108, 42, MyList$(), .Combo1
       DropListBox 42, 76, 108, 36, MyList$(), .DropList1$
       OptionGroup .grp1
           OptionButton 42, 100, 48, 12, "Option&1"
           OptionButton 42, 110, 48, 12, "Option&2"
       OptionGroup .grp2
           OptionButton 42, 136, 48, 12, "Option&3"
           OptionButton 42, 146, 48, 12, "Option&4"
       GroupBox 132, 125, 70, 36, "Group"
       CheckBox 142, 100, 48, 12, "Check&A", .Check1
       CheckBox 142, 110, 48, 12, "Check&B", .Check2
       CheckBox 142, 136, 48, 12, "Check&C", .Check3
       CheckBox 142, 146, 48, 12, "Check&D", .Check4
       CancelButton 42, 168, 40, 12 
       OKButton 90, 168, 40, 12
       PushButton 140, 168, 40, 12, "&Push Me 1"
       PushButton 190, 168, 40, 12, "Push &Me 2"
   End Dialog
   Dim Dlg1 As DialogName1
   Dlg1.joe  = "Def String"
   Dlg1.MyList1 = 1
   Dlg1.Combo1 = "Kiwi"
   Dlg1.DropList1 = 2
   Dlg1.grp2 = 1
   ' Dialog returns -1 for OK, 0 for Cancel, button # for PushButtons.
   button = Dialog( Dlg1 )
   'MsgBox "button: " & button   ' Uncomment for button return value.
   If button = 0 Then Exit Sub
   MsgBox "TextBox: "& Dlg1.joe
   MsgBox "ListBox: " & Dlg1.MyList1
   MsgBox Dlg1.Combo1
   MsgBox Dlg1.DropList1
   MsgBox "grp1: " & Dlg1.grp1
   MsgBox "grp2: " & Dlg1.grp2
   Begin Dialog DialogName2 60, 60, 160, 60, "Test Dialog 2"
       Text 10, 10, 28, 12, "Name:"
       TextBox 42, 10, 108, 12, .fred
       OkButton 42, 44, 40, 12
   End Dialog
   If button = 2 Then
       Dim Dlg2 As DialogName2
       Dialog Dlg2
       MsgBox Dlg2.fred
   ElseIf button = 1 Then
       Dialog Dlg1
       MsgBox Dlg1.Combo1
   End If
End Sub