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Up Down Arrows as TAB Key

Bob
Hello:

I'm tring to make the down arrow act as a tab key and the up arrow act as
like (-TAB.).

I have this for the down arrow but nothing happens.

Protected Overrides Function ProcessDialogKe y(ByVal keyData As Keys) As
Boolean
MyBase.ProcessD ialogKey(keyDat a)
If keyData = System.Windows. Forms.Keys.Down Then
keyData = System.Windows. Forms.Keys.Tab
End If
End Function
TIA

Bob
Nov 21 '05 #1
10 7188
Put the call to the MyBase.ProcessD ialogKey(keyDat a) AFTER the if
statement.

Protected Overrides Function ProcessDialogKe y(ByVal keyData As
System.Windows. Forms.Keys) As Boolean
If keyData = Keys.Down Then
keyData = Keys.Tab
End If
MyBase.ProcessD ialogKey(keyDat a)
End Function
"Bob" <no****@nospamm ers.com> wrote in message
news:C2hRe.2681 6$FL1.13685@trn ddc09...
Hello:

I'm tring to make the down arrow act as a tab key and the up arrow act as
like (-TAB.).

I have this for the down arrow but nothing happens.

Protected Overrides Function ProcessDialogKe y(ByVal keyData As Keys) As
Boolean
MyBase.ProcessD ialogKey(keyDat a)
If keyData = System.Windows. Forms.Keys.Down Then
keyData = System.Windows. Forms.Keys.Tab
End If
End Function
TIA

Bob

Nov 21 '05 #2
Bob
Some Guy:

Strange how my original post didn't show up where I intended. Thanks for the
response despite my screw up.

Your sugextion looks like it should work based on other articles. I'm
thinking I'm missing one little bit of this. Maybe I'm putting it in the
wrong place in my code.

I tried calling it from a controle like this

Dim MyKey As System.Windows. Forms.Keys
MyBase.ProcessD ialogKey(MyKey)

Yet nothing happens. I would like it to work through out the whole form. Do
I need to raise the event somewhere? Also, will it slow things down or would
I be better to try to convince the client to use traditional methods to
navigate the controles. Please keep in mind I have 327 controles.

Thanks Again

TIA

Bob
Nov 21 '05 #3
This code sets MyKey to none. So nothing happens.

Dim MyKey As System.Windows. Forms.Keys
MyBase.ProcessD ialogKey(MyKey)

Try: Dim MyKey As System.Windows. Forms.Keys=Keys .Tab

"Bob" <no****@nospamm ers.com> wrote in message
news:ZeCRe.7650 $__1.4593@trndd c07...
Some Guy:

Strange how my original post didn't show up where I intended. Thanks for
the response despite my screw up.

Your sugextion looks like it should work based on other articles. I'm
thinking I'm missing one little bit of this. Maybe I'm putting it in the
wrong place in my code.

I tried calling it from a controle like this

Dim MyKey As System.Windows. Forms.Keys
MyBase.ProcessD ialogKey(MyKey)

Yet nothing happens. I would like it to work through out the whole form.
Do I need to raise the event somewhere? Also, will it slow things down or
would I be better to try to convince the client to use traditional methods
to navigate the controles. Please keep in mind I have 327 controles.

Thanks Again

TIA

Bob

Nov 21 '05 #4
keyData is passed in by value, so how can you change it? I don't
believe you can change the value of an argument unless it has been
passed in by reference, so I don't believe your function will actually
change the value of keyData. In fact, I'm surprised you don't get an
exception there.

I think you have to use the focus method to change focus, something
like
If keyData = System.Windows. Forms.Keys.Down Then
cmdNextButton.F ocus()
End If
And I think you'd have to keep track of the order you want the tabs to
go in, or else search all the control properties yourself to find out
which one should get focus next and then manually set focus to that
particular control. In VB6 I've used a function (API function I think)
called SendKeys. Perhaps you can use that to send a tab to your
application whenever it sees a down arrow. I've not used it yet in
vb.net. Perhaps something like (not sure of the SendKey args):
If keyData = System.Windows. Forms.Keys.Down Then
SendKeys(applic ation.hInstance ,
System.Windows. Forms.Keys.Tab)
End If

Good luck.
Mark H.

Nov 21 '05 #5
Bob
Some Guy & Mark:

Thanks to both of you for the responses. Some Guy's response actually made
it so all the keys acted as a TAB key. However, this gave me some leads to
work with and helped me figure it out.

Mark.

I certainly see what you mean and when you look below at the code that is
working, you'll fall of your chair. I still have not fully tested it but so
far it works ok with one small yet probably resolvable issue. I've yet to
have any errors at all.

Protected Overrides Function ProcessDialogKe y(ByVal keyData As
System.Windows. Forms.Keys) As Boolean
'MyBase.Process DialogKey(keyDa ta) <<--Note that this line is
comented out.
End Function

'If I remove the above function entirely, the down arrow does nothing. Even
when I press it in other Private Subs for 'KeyDown events in other controles
and the TAB key doesn't work at all. Strange don't you think?

Private Sub Form1_KeyDown(B yVal sender As Object, ByVal e As
System.Windows. Forms.KeyEventA rgs) Handles MyBase.KeyDown
Dim MyKey As System.Windows. Forms.Keys
If e.KeyCode = Keys.Down Then
MyKey = Keys.Tab
ElseIf e.KeyCode = Keys.Tab Then
MyKey = Keys.Tab
End If
MyBase.ProcessD ialogKey(MyKey)
End Sub

The one small issue to resolve as of now is the following

I have an inherited user controle I made. It's a TextBox that I set to
MultiLine = True and ScrollBars = Verticle in my application(Not when I
built the controle). It's designed to move to the upper left portion of the
form and resize to (636, 326) when the F1 key is pressed and return to it's
original size and position when ESC is pressed. This also continues to
function as it should.

The down arrow acts as a TAB key intill it encounters my controle. When the
cursor reaches my controle, the down arrow key does nothing untill I press
the TAB key or click the next controle. Then the down arrow again functions
as the TAB key. However, the TAB key continues to function normally through
out all the controles on the form.

YEAH, I'm scratching my head too.

Bob
Nov 21 '05 #6
Bob
Mark:
I think you have to use the focus method to change focus, something like If keyData = System.Windows. Forms.Keys.Down Then
cmdNextButton.F ocus()
End If
I forgot to mention,

That would take a lot of code as I have more than 327 controles on my form
that TabStop = True. I must intercept the Down Arrow key press in the forms
KeyDown event.
If keyData = System.Windows. Forms.Keys.Down Then
SendKeys(applic ation.hInstance , System.Windows. Forms.Keys.Tab)
End If


Now thats interesting. I may able to refine my code with what you gave me.
I'll be sure and post my results.

Thank you

Bob
Nov 21 '05 #7
What's the problem?

Protected Overrides Function ProcessDialogKe y(ByVal keyData As
System.Windows. Forms.Keys) As Boolean
If keyData = Keys.Up Then
keyData = Keys.Tab
MyBase.ProcessD ialogKey(keyDat a)
End If
End Function

"Bob" <no****@nospamm ers.com> wrote in message
news:41_Re.229$ AB4.42@trnddc03 ...
Mark:
I think you have to use the focus method to change focus, something like

If keyData = System.Windows. Forms.Keys.Down Then
cmdNextButton.F ocus()
End If


I forgot to mention,

That would take a lot of code as I have more than 327 controles on my form
that TabStop = True. I must intercept the Down Arrow key press in the
forms KeyDown event.
If keyData = System.Windows. Forms.Keys.Down Then
SendKeys(applic ation.hInstance , System.Windows. Forms.Keys.Tab)
End If


Now thats interesting. I may able to refine my code with what you gave me.
I'll be sure and post my results.

Thank you

Bob

Nov 21 '05 #8
Bob
Some Guy:

There is no problem. You've been a great help. Someone else responded also
and maybe he didn't see your post so maybe he thought is wasn't resolved. He
didn't seem to think it would work at all but actually it works great. It
was just hanging on one of my inherited user controles but I fixed that too
with a little modification to my controle.

Thanks for helping

Bob
Nov 21 '05 #9
Bob
Some guy:

I'm sorry. My response was to Marks response. HEHEHE. Everything is fine.

Thanks again

Bob
Nov 21 '05 #10

This thread has been closed and replies have been disabled. Please start a new discussion.

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