Programatically getting a RichTextBox to scroll - What Am I doing Wrong

  • Thread starter Thread starter One Handed Man
  • Start date Start date
O

One Handed Man

Ive been working on this since yesterday and its bugging me. Although the
event is firing, The box does not scroll. Can anyone see what Im doing
wrong. I suspect it is stupidly simple.



TIA



SubClass RichtextBox in order to fire the OnVScroll Event

Public Class MyRichTextBox

Inherits RichTextBox

Public Sub PerformVScroll()

MyBase.OnVScroll(EventArgs.Empty)

End Sub

End Class

- This button invokes the PerformVScroll -

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles PerformVscroll.Click

RTB.PerformVScroll()

End Sub

- THis confirms that the event has been raised -

Private Sub handleScroll(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles RTB.VScroll

Console.WriteLine("Handling scroll")

End Sub




--
Regards - One Handed Man

Author : Fish .NET & Keep .NET
=========================================
This posting is provided "AS IS" with no warranties,
and confers no rights.
 
terry_burnsREMOVE% said:
Ive been working on this since yesterday and its bugging me. Although the
event is firing, The box does not scroll. Can anyone see what Im doing
wrong. I suspect it is stupidly simple.



TIA



SubClass RichtextBox in order to fire the OnVScroll Event

Public Class MyRichTextBox

Inherits RichTextBox

Public Sub PerformVScroll()

MyBase.OnVScroll(EventArgs.Empty)

End Sub

End Class

- This button invokes the PerformVScroll -

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles PerformVscroll.Click

RTB.PerformVScroll()

End Sub

- THis confirms that the event has been raised -

Private Sub handleScroll(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles RTB.VScroll

Console.WriteLine("Handling scroll")

End Sub
Click to expand...

You're simply causing all event subscribers to be notified that a scroll
has happened. It's not actually performing the scroll. For that, you
would probably either need to:

1) Send the WM_VSCROLL message to your control.
2) or try the ScrollToCaret() function.
 
The carret worked ok so thanks for that. I looked for examples on how to
send messages to the control but of yet have not found any. Do you have a
good reference I can look at ?

Many Thanks

--
Regards - One Handed Man

Author : Fish .NET & Keep .NET
=========================================
This posting is provided "AS IS" with no warranties,
and confers no rights.
 
Excellent Patrick, You have been most helpful this did the trick

;-D

--
Regards - One Handed Man

Author : Fish .NET & Keep .NET
=========================================
This posting is provided "AS IS" with no warranties,
and confers no rights.
 
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