[ Show ]
Support VoyForums
[ Shrink ]
VoyForums Announcement: Programming and providing support for this service has been a labor of love since 1997. We are one of the few services online who values our users' privacy, and have never sold your information. We have even fought hard to defend your privacy in legal cases; however, we've done it with almost no financial support -- paying out of pocket to continue providing the service. Due to the issues imposed on us by advertisers, we also stopped hosting most ads on the forums many years ago. We hope you appreciate our efforts.

Show your support by donating any amount. (Note: We are still technically a for-profit company, so your contribution is not tax-deductible.) PayPal Acct: Feedback:

Donate to VoyForums (PayPal):

Login ] [ Contact Forum Admin ] [ Main index ] [ Post a new message ] [ Search | Check update time | Archives: 12345678[9]10 ]

[ Next Thread | Previous Thread | Next Message | Previous Message ]

Date Posted: 10:43:20 08/21/00 Mon
Author: Robert
Subject: Re: Invalid class typecast?
In reply to: Michel 's message, "Re: Invalid class typecast?" on 07:00:07 08/21/00 Mon

Hi michel,

The graphic is a Delphi Tbitmap class, this is how I load it:

Do you know how I can convert the Tbitmap to a TDibGraphic?
Or is there another way to do this, I don't want to use the imagescrollbox because I have implemented a resize method with different filters which can not load the image from the imagescrollbox component, due to the same problem I quess.



> Hi Robert,
> This means that the type of graphic loaded in
> Image2.Picture.Graphic is not a TDibGraphic derived
> class. For example, it may be a Delphi TBitmap class.
> To determine that, use
> Image2.Picture.Graphic.ClassName and assign it to a
> temporary variable and look at it in the debugger. How
> is your image loaded on the TImage?
> Best regards,
> Michel
> > Hello
> >
> > When I try to run my app which has the following line
> > graphic := image2.picture.graphic as TDibGraphic;
> > Delphi genereates a 'invalid class typecast' error.
> > I've read the previous post about this, but this
> > didn't work for me (Am I doing something wrong here?)
> >
> > Please help me out on this one?
> >
> > Thanks
> >
> > Robert

[ Next Thread | Previous Thread | Next Message | Previous Message ]


[ Contact Forum Admin ]

Forum timezone: GMT-5
VF Version: 3.00b, ConfDB:
Before posting please read our privacy policy.
VoyForums(tm) is a Free Service from Voyager Info-Systems.
Copyright © 1998-2019 Voyager Info-Systems. All Rights Reserved.