Creating our first button in VBA

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Revision as of 18:42, 10 March 2013 by Rxdff15551 bb53 (Talk | contribs) (→‎Adding a handler for the button's onAction delegate)

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Prerequisites

We recommend you go though A 'hello world' VBA program before going into this example.

Creating a button

  • Enter the code below in a standard VBA module
  1. Public Sub CreateMyUI3()
  2.  
  3.     With rxCustomUI.defaultInstance
  4.         ' Clear old state
  5.         .Clear
  6.  
  7.         ' Add a new tab
  8.         With .ribbon.tabs.Add(New rxTab)
  9.             .Label = "My First Tab"
  10.             ' Add a new group to our tab
  11.             With .groups.Add(New rxGroup)
  12.                 .Label = "My Group"
  13.  
  14.                 ' Add a new button to our group
  15.                 With .Buttons.Add(New rxButton)
  16.                     .Label = "My Button"
  17.  
  18.                 End With
  19.  
  20.             End With
  21.         End With
  22.  
  23.         ' Render the UI
  24.         .Refresh
  25.     End With
  26.  
  27. End Sub
  • Run the sub to create a button labeled 'My Button' (which belongs to a group labeled 'My Group' which, in turn' belongs to a tab labeled 'My Tab')
    FirstButton.png

Code Analysis

' Add a new group to our tab
With .groups.Add(New rxGroup)
    .Label = "My Group"
    '...
End With

Each rxTab object has a collection of rxGroup objects (accessible through its .groups property). Here we add a new group to our tab's groups and label it 'My Group' 


' Add a new button to our group
With .Buttons.Add(New rxButton)
    .Label = "My Button"
 
End With

Each rxGroup object has a collection of rxButton objects (accesible through its .buttons property). Here we add a new button to out group's buttons and label it 'My Button'


Adding a handler for the button's onAction delegate

At the moment the new button isn't of much use as it does nothing when clicked. In this section we will hook up to the control's onAction delegate.

  • Update the sub as follows
  1. Public Sub CreateMyUI3()
  2.  
  3.     Dim myCustomUI As rxCustomUI
  4.     Set myCustomUI = rxCustomUI.defaultInstance
  5.  
  6.     With myCustomUI
  7.         ' Clear old state
  8.         .Clear
  9.  
  10.         ' Add a new tab
  11.         With .ribbon.tabs.Add(New rxTab)
  12.             .Label = "My First Tab"
  13.             ' Add a new group to our tab
  14.             With .groups.Add(New rxGroup)
  15.                 .Label = "My Group"
  16.  
  17.                 ' Add a new button to our group
  18.                 With .Buttons.Add(New rxButton)
  19.                     .Label = "My Button"
  20.                     ' Hook up the control's onAction delegate
  21.                     .OnAction = myCustomUI.defaultInstance.make_delegate("MyCallback")
  22.                 End With
  23.  
  24.             End With
  25.         End With
  26.  
  27.         ' Render the UI
  28.         .Refresh
  29.     End With
  30.  
  31. End Sub
  • We have now hooked up the control's onAction delegate with a function called MyCallback, which we haven't yet provided.
  • We can now either manually provide a delegate stub function with the correct name and signature, or make use of the Dynamic RibbonX VBA tools to insert it automatically:
    1. Right-click inside the callback name string ("MyCallback" here)
    2. Follow the path 'Dynamic RibbonX'->'Insert Delegate Stubs'->'Insert [rxButton.onAction] stub'
    3. This will insert an empty stub right below the current function:
Sub MyCallback(ByVal control As DynamicRibbonX.IRibbonControl)
    Err.Raise &H80004001, , "Not implemented"
End Sub

Notes

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