Tabbing through dynamic controls

Markus Sveinn Markusson -- markus@throun.is
Monday, September 23, 1996

Environment: VC++ 4.2 / NT 3.51

Fellow programmers:

I have a dialog form which consists of dynamically loaded CEdit
controls. These controls are loaded into a dynamically created
window. Simply put, these controls are CHILD windows in a dialog
CHILD window.

I create a special CMyDialog::MyWndProc() function to grab all
user events from these controls. OK. When I press Tab in control
A I use SetFocus() to set focus to control B. OK. I press Tab in
control B but nothing happens. Switching focus (mouse) back to A
and then back to B again I notice that the cursor in control A
reflects the correct position in control B! It's almost as if
controls receiving focus this way seem to lose their ability
to route messages to CMyWndProc, WM_KEYDOWN for example.

This is probably due to a glitch somewhere in my code but any
comments or help would be appreciated.

Roughly stated this is what I do:

- Dynamically create CMyWnd in CMyDialog.
- Dynamically create CMyEdit controls in CMyWnd.
- Call SetWindowLong() to hook CMyEdit to CMyDialog::MyWndProc()
- In CMyDialog::MyWndProc() call SetFocus() to next control on Tabs.
- Return from CMyDialog::MyWndProc() using
    ::CallWindowProc( [WndProc returned from SetWindowLong()] )

Thank you,

Markus

-------------------------------------
Markus Sveinn Markusson, Eng.
Throun Ltd.
Hofdabakka 9, 112 Reykjavik, Iceland
Tel. +354 587-6788  Fax +354 567-4265
e-mail: markus@throun.is

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John Bundgaard -- johnb@image.dk
Thursday, September 26, 1996

Hi Markus.

If I understand you correctly, then you do not need to do all what 
you are doing.

Simply by setting the 'control' flag of the child-dialog window in 
the resource editor, should do the trick.

I use this in a program, where i have a CFormView containing a tree-
control in the right side. When the user changes the selection in the
tree, I dynamicly changes a child dialog on the right side.

John Bundgaard
johnb@image.dk

----------
> I have a dialog form which consists of dynamically loaded CEdit
> controls. These controls are loaded into a dynamically created
> window. Simply put, these controls are CHILD windows in a dialog
> CHILD window.
> 
> I create a special CMyDialog::MyWndProc() function to grab all
> user events from these controls. OK. When I press Tab in control
> A I use SetFocus() to set focus to control B. OK. I press Tab in
> control B but nothing happens. Switching focus (mouse) back to A
> and then back to B again I notice that the cursor in control A
> reflects the correct position in control B! It's almost as if
> controls receiving focus this way seem to lose their ability
> to route messages to CMyWndProc, WM_KEYDOWN for example.
> 
> This is probably due to a glitch somewhere in my code but any
> comments or help would be appreciated.
> 
> Roughly stated this is what I do:
> 
> - Dynamically create CMyWnd in CMyDialog.
> - Dynamically create CMyEdit controls in CMyWnd.
> - Call SetWindowLong() to hook CMyEdit to CMyDialog::MyWndProc()
> - In CMyDialog::MyWndProc() call SetFocus() to next control on Tabs.
> - Return from CMyDialog::MyWndProc() using
>     ::CallWindowProc( [WndProc returned from SetWindowLong()] )

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