enable/disable buttons in Outlook

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enable/disable buttons in Outlook
 
Graham Charles




Posts: 13
 Joined: 2005-07-29
I've got an event handler that enables a button based on whether a MailItem is selected in an explorer in Outlook: 


    Private Sub adxOutlookEvents_ExplorerSelectionChange(ByVal sender As Object, ByVal explorer As Object) Handles adxOutlookEvents.ExplorerSelectionChange
        On Error GoTo errhandler
        If explorer.Selection.Count = 1 Then
            If TypeName(explorer.selection.item(1)) = "MailItem" Then
                btnCategorizeSender.Enabled = True
            Else
                btnCategorizeSender.Enabled = False
            End If
        End If

ExitHere:
        Exit Sub

ErrHandler:
        ' TODO: log error
        Resume ExitHere

    End Sub


Unfortunately, it doesn't work. Even after the line 

btnCategorizeSender.Enabled = True


the property still returns false. It appears that "Enabled" is a read-only property.

Any ideas?

Thanks,

g.
Posted 07 Aug, 2005 19:14:10 Top
mdriver


Guest


Hi

I Disable/Enable buttons based on properties of e-mail in explorer myself. I actually use something like this:

I first test the typeName of the explorer Outlook sometimes returns "Nothing" so I exit my code so I don't get an error:

If TypeName(explorer) <> "nothing" Then
exit
else
'Test to see if actually an e-mail
If (explorer.Class <> 34) Then
exit
else
'If user selects Outlook box do nothing as item is being sent
If explorer.CurrentFolder.Name = "Outbox" Then
exit
else
'Ensure only one e-mail selected
If explorer.CurrentFolder.Items.Count <> 1 Then
exit
else
'Test if selection is actually something
Dim selection As Outlook.Selection = Nothing
selection = explorer.Selection
If (selection Is Nothing) Then
exit
else

'Now get a Object refernce to the current Selection
Dim object_ As Object
object_ = selection.Item(1)
If (object_ Is Nothing) Then
exit
else

Now get a reference to the MailItem
If object_.Class <> Outlook.OlObjectClass.olMail Then
Dim item As MailItem
item = object_

If item_Sent = False Then
'We have a unsent e-mail
else
'We have a sent e-mail
end if

So basically I exit the event if the current explorer selected item is not a single mail item. I also show how to handle if the item is unsent or sent.

I hope some of this this helps and you can convert it into working code.

This is my own view and not the view or suppported by Afalinasoft.

Regards

Matt
Posted 08 Aug, 2005 04:09:15 Top
mdriver


Guest


Forgot to add I then disable/enable buttons using:

If AdxCmdBarBtn_Refresh_EX.Visible = False Then
AdxCmdBarBtn_Refresh_EX.Visible = True
End If
If AdxCmdBarBtn_Export_EX.Enabled = True Then
AdxCmdBarBtn_Export_EX.Enabled = False
End If

Let me know if you are still having trouble.

Matt
Posted 08 Aug, 2005 04:33:28 Top
Sergey Grischenko


Add-in Express team


Posts: 7235
 Joined: 2004-07-05
Hi Graham.

Please download our ADX Toys for Outlook to learn how we do this.
http://www.add-in-express.com/free-addins/net-outlook-addin.php
Posted 08 Aug, 2005 15:46:10 Top