Re: simple Bitmap Bkgd Class ?

From:

"David Ching" <dc@remove-this.dcsoft.com>

Newsgroups:

microsoft.public.vc.mfc

Date:

Thu, 19 Jul 2007 13:21:44 GMT

Message-ID:

<IzJni.23345$Rw1.17151@newssvr25.news.prodigy.net>

"cdg" <anyone@anywhere.com> wrote in message
news:tTCni.332514$p47.314072@bgtnsc04-news.ops.worldnet.att.net...

Is this the correct way to write the LoadImage( ) statement and the
entire
function?

HRGN BmpBkgdRegion::AccessBmp()
{
    HBITMAP hbm = (HBITMAP)::LoadImage(AfxGetInstanceHandle(),
    MAKEINTRESOURCE(IDB_BACKGROUND), IMAGE_BITMAP, 0, 0,
    LR_DEFAULTSIZE);

    bmpBkgd.Attach(hbm);
    DeleteObject(hbm);

    ProcessBmp();

    return hRgn;
}

Use AfxGetResourceHandle() instead of AfxGetInstanceHandle(). Usually they
are the same, but not always.

You should not Attach() the HBTIMAP, then call DeleteObject() on it. Your
bmpBkgd object (btw, where is the declaration of this?) should DeleteObject
automatically when the CBitmap object is destroyed.

And I am getting an error message for the return handle in BOOL
CBmpBkgdBmpButtonDlg::OnInitDialog() -

error C2065: 'hRgn' : undeclared identifier

For this line - SetWindowRgn(hRgn,true);

Do you ever declare

HRGN hRgn;

The compiler seems to be missing it.

In answer to your other post about converting the bitmap in to a region,
simply google "bitmap region" and you will get a slew of hits.

-- David