Article View: borland.public.cppbuilder.nativeapi
Article #179Re: Assigning Icon from ExtractIconEx without leaks
From: Bob Gonder
Date: Tue, 01 Jul 2008 14:38
Date: Tue, 01 Jul 2008 14:38
34 lines
1859 bytes
1859 bytes
Mike Collins wrote:
>HICON hIconSmall;
>ExtractIconEx(sObject.c_str(), 0, NULL, &hIconSmall, 1);
>if (hIconSmall)
>{
> Image->Picture->Icon->Handle = hIconSmall;
> ::DestroyIcon(hIconSmall);
>}
>- however, as soon as i call DestroyIcon - the image is lost.
Destroy the Image->Picture->Icon->Handle instead,
when you are through with it.
>if (hIconSmall)
>{
> TIcon *icoSmall = new TIcon;
> icoSmall->Handle = hIconSmall;
> Image->Height = 16;
> Image->Width = 16;
> Image->Canvas->Draw(0, 0, icoSmall);
> delete icoSmall;
> ::DestroyIcon(hIconSmall);
>}
>- this works and doesn't seem to have any resource leaks but the image is
>not painted transparent - i have a white background displayed. I've tried
>setting the Transparent property of the TImage but it doesn't make any
>difference.
Is that a typo?
TIcon needs the transparent property.
I would think it would be
icoSmall->Transparent = TRUE;
icoSmall->SetSize(16,16);
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X-Google-Thread: 10cc67,dea519f40adb32bd X-Google-Attributes: gid10cc67,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit From: Bob Gonder <none@nowhere.invalid> Newsgroups: borland.public.cppbuilder.nativeapi Subject: Re: Assigning Icon from ExtractIconEx without leaks Date: Tue, 01 Jul 2008 07:38:55 -0700 Message-ID: <9mfk64t6o1jol950ah8qm1ghr2kao5ffmo@4ax.com> References: <486a1911@newsgroups.borland.com> X-Newsreader: Forte Agent 1.93/32.576 English (American) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit NNTP-Posting-Host: 67.77.146.152 X-Trace: newsgroups.borland.com 1214923132 67.77.146.152 (1 Jul 2008 07:38:52 -0700) Lines: 36 Path: arc1-ca.pugleaf.net!g2news1.google.com!news2.google.com!news.glorb.com!feeder.erje.net!news.isoc.lu!newsgroups.borland.com!not-for-mail