Calling ProcessCmdKey in control

[Colin Graham]

I am using the following code on my form to capture whether the tab
control has been pressed.

Protected Overrides Function ProcessCmdKey(B yRef msg As
System.Windows. Forms.Message, ByVal keyData As
System.Windows. Forms.Keys) As Boolean

Select Case keyData
Case Keys.Tab
MsgBox("tab pressed")
Return True

End Select

End Function

this code works fine to capture the tab press on the form but i wish
it only to occur on a specific control. what i really wish to do is to
find out if the tab has been pressed when i have got focus on a
specific control e.g. textbox1.text

Can anyone tell me how i can do this e.g. how do i call the function??
or is it a case that i must create a custom control??

Many thanks

CG

[Ken Tucker [MVP]]

Hi,

You have to make a control that inherits from textbox to have access
to processcmdkey.

Ken
------------------------
"Colin Graham" <cs********@hot mail.com> wrote in message
news:ee******** *************** **@posting.goog le.com...

I am using the following code on my form to capture whether the tab
control has been pressed.

Protected Overrides Function ProcessCmdKey(B yRef msg As
System.Windows. Forms.Message, ByVal keyData As
System.Windows. Forms.Keys) As Boolean

Select Case keyData
Case Keys.Tab
MsgBox("tab pressed")
Return True

End Select

End Function

this code works fine to capture the tab press on the form but i wish
it only to occur on a specific control. what i really wish to do is to
find out if the tab has been pressed when i have got focus on a
specific control e.g. textbox1.text

Can anyone tell me how i can do this e.g. how do i call the function??
or is it a case that i must create a custom control??

Many thanks

CG

[Mick Doherty]

but you can check the Forms ActiveControl to see if the textbox has focus.

--
Mick Doherty
http://dotnetrix.co.uk/nothing.html
"Ken Tucker [MVP]" <vb***@bellsout h.net> wrote in message
news:OA******** ******@TK2MSFTN GP11.phx.gbl...

Hi,

You have to make a control that inherits from textbox to have access to processcmdkey.

Ken
------------------------
"Colin Graham" <cs********@hot mail.com> wrote in message
news:ee******** *************** **@posting.goog le.com...

I am using the following code on my form to capture whether the tab
control has been pressed.

Protected Overrides Function ProcessCmdKey(B yRef msg As
System.Windows. Forms.Message, ByVal keyData As
System.Windows. Forms.Keys) As Boolean

Select Case keyData
Case Keys.Tab
MsgBox("tab pressed")
Return True

End Select

End Function

this code works fine to capture the tab press on the form but i wish
it only to occur on a specific control. what i really wish to do is to
find out if the tab has been pressed when i have got focus on a
specific control e.g. textbox1.text

Can anyone tell me how i can do this e.g. how do i call the function??
or is it a case that i must create a custom control??

Many thanks

CG

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[Colin Graham]

Thanks very much for that its helped me alot. i now have another tiny
problem though see code below.

Protected Overrides Function ProcessCmdKey(B yRef msg As
System.Windows. Forms.Message, ByVal keyData As
System.Windows. Forms.Keys) As Boolean
If Me.ActiveContro l Is yyn_WeightLoss Or _
Me.ActiveContro l Is yyn_RectalBleed ing Or _
Me.ActiveContro l Is yyn_TubeDifficu lties Or _
Me.ActiveContro l Is yyn_XRayReport Or _
Me.ActiveContro l Is yyn_CarriedOut _
AndAlso keyData = Keys.Tab = VK_TAB Then

fun_TabMoveNext ()

ElseIf keyData = Keys.Tab And Control.Modifie rKeys =
Keys.ShiftKey Then
If Me.ActiveContro l Is yyn_AbdPain Or _
Me.ActiveContro l Is yyn_Diarrhoea Or _
Me.ActiveContro l Is yyn_PoorIntake Or _
Me.ActiveContro l Is txt_OtherReason Or _
Me.ActiveContro l Is dtp_ProcedureDa te Then

fun_TabMoveBack ()

Return True
End If
End If

Return MyBase.ProcessC mdKey(msg, keyData)

End Function

Im trying to catch the shift tab for navigation through the tab
control i.e., shift + tab (back) and tab (Forward). My problem seems
to be that it sees the shift key as a tab key key and moves forwards
when i press shift and im on one of the fields for moving forwards.
any idea who i can trap for purely just shift + tab?? ive read a few
other threads with no avail.

Thanks

CG

[Mick Doherty]

OK, so then you should be working in the ProcessTabKey Method.

Protected Overrides Function ProcessTabKey(B yVal forward As Boolean) As
Boolean
Dim ac As Control = Me.ActiveContro l
If forward Then
If ac Is TextBox1 Then
fun_TabMoveNext ()
Return True
End If
Else
If ac Is TextBox1 Then
fun_TabMoveBack ()
Return True
End If
End If
Return MyBase.ProcessT abKey(forward)
End Function

--
Mick Doherty
http://dotnetrix.co.uk/nothing.html
"Colin Graham" <cs********@hot mail.com> wrote in message
news:ee******** *************** ***@posting.goo gle.com...

Thanks very much for that its helped me alot. i now have another tiny
problem though see code below.

Protected Overrides Function ProcessCmdKey(B yRef msg As
System.Windows. Forms.Message, ByVal keyData As
System.Windows. Forms.Keys) As Boolean
If Me.ActiveContro l Is yyn_WeightLoss Or _
Me.ActiveContro l Is yyn_RectalBleed ing Or _
Me.ActiveContro l Is yyn_TubeDifficu lties Or _
Me.ActiveContro l Is yyn_XRayReport Or _
Me.ActiveContro l Is yyn_CarriedOut _
AndAlso keyData = Keys.Tab = VK_TAB Then

fun_TabMoveNext ()

ElseIf keyData = Keys.Tab And Control.Modifie rKeys =
Keys.ShiftKey Then
If Me.ActiveContro l Is yyn_AbdPain Or _
Me.ActiveContro l Is yyn_Diarrhoea Or _
Me.ActiveContro l Is yyn_PoorIntake Or _
Me.ActiveContro l Is txt_OtherReason Or _
Me.ActiveContro l Is dtp_ProcedureDa te Then

fun_TabMoveBack ()

Return True
End If
End If

Return MyBase.ProcessC mdKey(msg, keyData)

End Function

Im trying to catch the shift tab for navigation through the tab
control i.e., shift + tab (back) and tab (Forward). My problem seems
to be that it sees the shift key as a tab key key and moves forwards
when i press shift and im on one of the fields for moving forwards.
any idea who i can trap for purely just shift + tab?? ive read a few
other threads with no avail.

Thanks

CG

---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.719 / Virus Database: 475 - Release Date: 12/07/2004

[Colin Graham]

Thank you very much worked perfectly.