Re: Strange CComboBox::PresubclassWindow problem

From:
"AliR \(VC++ MVP\)" <AliR@online.nospam>
Newsgroups:
microsoft.public.vc.mfc
Date:
Wed, 9 May 2007 11:34:35 -0500
Message-ID:
<tNm0i.2124$zj3.36@newssvr23.news.prodigy.net>
For some controls it's normal, I know that for Combo and Listboxs the frame
work calls PreSubclassWindow no matter how it is created.

AliR.

"Eric Margheim" <NOSPAM***eric@prism-grp.com***NOSPAM> wrote in message
news:uaACfLlkHHA.3264@TK2MSFTNGP04.phx.gbl...

"AliR (VC++ MVP)" <AliR@online.nospam> wrote in message
news:XFl0i.1672$UU.1304@newssvr19.news.prodigy.net...

Oh I just realized what you were saying. I misunderstood the dynamic
creation part.
It seems as though the combo box doesn't like getting calls to
SetItemHeight for list items in PreSubclassWindow when it is being
created, I doesn't mind SetItemHeight(-1,100).
Anyway, it's not an assert, it's a full blown exception. I tried
catching the excpetion to see what its complaining about couldn't, the
only way I could catch the exception was with catch(...) but I don't know
if there is a way to get execption information with the catch all method.

Anyway I really can think of a solution.


I'm doing two sets

SetItemHeight( 0, abs(lf.lfHeight) + 2 );

SetItemHeight( -1, abs(lf.lfHeight) + 4 );

I guess the first is attempting to set the height of the first element in
the list portion of the combobox. I wonder why this doesn't cause a
problem in the Create method but does in PresubclassWindow? Should
PresubclassWindow be getting called when I'm creating the control outside
of dialog resource?

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