CComboBoxes in CFileDialog problem
Serge Lalonde -- serge@infolytica.qc.ca
Monday, November 25, 1996
Environment: VC++ 4.2-flat, NT 4.0
Hi there!
Has anyone run into this problem before?
I am subclassing CFileDialog and using my own resource template. For
some reason, the popdown combo boxes in my template lose the strings I
put in them in the resource editor. I have to manually reenter them in
in the code. The same happens in a CColorDialog subclass that I have,
but subclasses based on CDialog work fine.
Does anyone have a fix for this?
--
Have a tremendous day!
_/_/_/_/ _/_/_/_/ _/_/_/ _/_/_/ _/_/_/_// 300 Leo Parizeau, Suite 2222
_/ _/ _/ _/ _/ _/ / Montreal, PQ, Canada H2W 2P4
_/_/_/_/ _/_/_/ _/_/_/_/ _/ _/_/ _/_/_/ / Voice: (514) 849-8752 x236
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_/_/_/_/ _/_/_/_/ _/ _/ _/_/_/ _/_/_/_/ Lalonde, Infolytica Corp.
David Little -- dlittle@equinoxcorp.com
Wednesday, November 27, 1996
I suspect that you should implement your own message handler as well as
the custom template.
----------
From: Serge Lalonde[SMTP:serge@infolytica.qc.ca]
Sent: Monday, November 25, 1996 1:00 PM
To: mfc-l@netcom.com
Cc: serge@infolytica.qc.ca
Subject: CComboBoxes in CFileDialog problem
Environment: VC++ 4.2-flat, NT 4.0
Hi there!
Has anyone run into this problem before?
I am subclassing CFileDialog and using my own resource template. For
some reason, the popdown combo boxes in my template lose the strings I
put in them in the resource editor. I have to manually reenter them in
in the code. The same happens in a CColorDialog subclass that I have,
but subclasses based on CDialog work fine.
Does anyone have a fix for this?
--
Have a tremendous day!
_/_/_/_/ _/_/_/_/ _/_/_/ _/_/_/ _/_/_/_// 300 Leo Parizeau, Suite 2222
_/ _/ _/ _/ _/ _/ / Montreal, PQ, Canada H2W 2P4
_/_/_/_/ _/_/_/ _/_/_/_/ _/ _/_/ _/_/_/ / Voice: (514) 849-8752 x236
_/ _/ _/ _/ _/ _/ _/ /__Fax: (514) 849-4239__
_/_/_/_/ _/_/_/_/ _/ _/ _/_/_/ _/_/_/_/ Lalonde, Infolytica Corp.
Serge Lalonde -- serge@infolytica.qc.ca
Friday, December 06, 1996
Hi there!
>
> Environment: VC++ 4.2-flat, NT 4.0
>
> Hi there!
>
> Has anyone run into this problem before?
>
> I am subclassing CFileDialog and using my own resource template. For
> some reason, the popdown combo boxes in my template lose the strings I
> put in them in the resource editor. I have to manually reenter them in
> in the code. The same happens in a CColorDialog subclass that I have,
> but subclasses based on CDialog work fine.
>
> Does anyone have a fix for this?
>
Well, I have found the reason for this problem and it is an MFC bug (surprise).
My thanks to David Little for his suggestion, but the fix turned out to
be easier.
When subclassing a common dialog with a custom template, make sure to
initialize the m_lpszTemplateName member variable to be the same value
as the lpTemplateName member of the common dialog's structure (i.e.
m_ofn, m_cc, etc.). Otherwise, when ExecuteDlgInit() gets called to
initialize the dialog items, it is NULL and nothing gets initialized.
This is an MFC bug, because the common dialogs never initialize the
m_lpszTemplateName member variable to be the same as their structure's,
even though other pieces of code in MFC expect that member variable to
be set.
I think that this is a FAQ candidate. I agonized over this for too long.
Example code:
ImportDialog::IImportDialog
(LPCTSTR lpszDefExt,
LPCTSTR lpszFileName,
DWORD dwFlags,
LPCTSTR lpszFilter,
CWnd *pParentWnd)
: CFileDialog(TRUE, lpszDefExt, lpszFileName, dwFlags, lpszFilter, pParentWnd)
{
m_ofn.Flags|= OFN_ENABLETEMPLATE | OFN_EXPLORER;
m_ofn.lpTemplateName= m_lpszTemplateName= MAKEINTRESOURCE(IDD_IMPORT);
m_ofn.lpstrTitle= _T("Import");
return;
}
--
Have a tremendous day!
_/_/_/_/ _/_/_/_/ _/_/_/ _/_/_/ _/_/_/_// 300 Leo Parizeau, Suite 2222
_/ _/ _/ _/ _/ _/ / Montreal, PQ, Canada H2W 2P4
_/_/_/_/ _/_/_/ _/_/_/_/ _/ _/_/ _/_/_/ / Voice: (514) 849-8752 x236
_/ _/ _/ _/ _/ _/ _/ /__Fax: (514) 849-4239__
_/_/_/_/ _/_/_/_/ _/ _/ _/_/_/ _/_/_/_/ Lalonde, Infolytica Corp.
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