Article View: borland.public.cppbuilder.nativeapi
Article #6728Re: GDI and User Objects Overflow
From: Mark Jacobs
Date: Mon, 18 Apr 2005 15:23
Date: Mon, 18 Apr 2005 15:23
61 lines
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3344 bytes
Jonathan Benedicto wrote:
> Why don't you use SHGetFileInfo to get a image list of the icons and
> to get the image index of the icon for each file.
>
> That is how TurboPower's ShellShock works their controls.
Thanks for your reply. The reason is because ExtractAssociatedIcon does more
than the Shell function you mention. Here is its help file description :-
The ExtractAssociatedIcon function returns the handle of an indexed icon found
in a file or an icon found in an associated executable file.
HICON ExtractAssociatedIcon(
HINSTANCE hInst, // application instance handle
LPTSTR lpIconPath, // path and filename of file for which icon is wanted
LPWORD lpiIcon // pointer to icon index
);
Parameters
hInst
Specifies the instance of the application calling the function.
lpIconPath
Points to a string that specifies the full path and filename of the file for
which an icon is desired. The function extracts the icon handle from that
file, or from an executable file associated with that file.
If the icon handle is obtained from an executable file, the function stores
the full path and filename of that executable in the string pointed to by
lpIconPath.
lpiIcon
Points to a WORD that specifies the index of the icon whose handle is to be
obtained.
If the icon handle is obtained from an executable file, the function stores
the icon's identifier in the WORD pointed to by lpiIcon.
Return Values
If the function succeeds, the return value is an icon handle. If the icon is
extracted from an associated executable file, the function stores the full
path and filename of the executable file in the string pointed to by
lpIconPath, and stores the icon's identifier in the WORD pointed to by lpiIcon.
If the function fails, the return value is NULL.
Remarks
The ExtractAssociatedIcon function first looks for the indexed icon in the
file specified by lpIconPath. If the function cannot obtain the icon handle
from that file, and the file has an associated executable file, it looks in
that executable file for an icon. Associations with executable files are based
on filename extensions, are stored in the per-user part of the registry, and
can be defined using File Manager's Associate command.
--
Mark Jacobs
http://www.dkcomputing.co.uk
Technical Details
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X-Google-Thread: 10cc67,c7f7d55dbf4194d8 X-Google-Attributes: gid10cc67,public X-Google-Language: ENGLISH,ASCII-7-bit Date: Mon, 18 Apr 2005 16:23:13 +0100 From: Mark Jacobs <http://www.jacobsm.com/mjmsg.htm?mj@critical> User-Agent: Mozilla Thunderbird 1.0.2 (Windows/20050317) X-Accept-Language: en-us, en MIME-Version: 1.0 Newsgroups: borland.public.cppbuilder.nativeapi Subject: Re: GDI and User Objects Overflow References: <4263c64a$1@newsgroups.borland.com> <4263c97c@newsgroups.borland.com> In-Reply-To: <4263c97c@newsgroups.borland.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit NNTP-Posting-Host: 81.144.157.8 Message-ID: <4263d0b2@newsgroups.borland.com> X-Trace: newsgroups.borland.com 1113837746 81.144.157.8 (18 Apr 2005 08:22:26 -0800) Lines: 61 Path: arc1-ca.pugleaf.net!g2news1.google.com!news4.google.com!newshub.sdsu.edu!peer01.west.cox.net!cox.net!newsfeeds.ihug.co.nz!ihug.co.nz!newsgroups.borland.com!not-for-mail