OpenEuphoria

Re: Graphics in Win32lib

• Posted by aaron_mr_cooldude at sympatico.ca Oct 10, 2002
• 453 views

hi what is fire ball?
----- Original Message -----
From: <mistertrik at hotmail.com>
Subject: Re: Graphics in Win32lib


>
> Thanks Martin. There's a problem with it though, I think it's the fault of
> the win function rather than your code, because I found the same thing
> occurring in a contribution Windows Animation Effect (that used stretchblt
> as well).
>
> My bitmap (in the .zip) has a section that goes from black to orange as a
> smooth graduation. When it is resized smaller, dark bands appear in the
> middle of the section. I found a similar thing with the turtle bitmap,
> although it had to be resized quite small before the effect was noticed.
> Does anyone know why this is, because such a glitch is not acceptable for
my
> purposes? I'm running Win2k here if that helps.
>
> Thanks
> =====================================================
> .______<-------------------\__
> / _____<--------------------__|===
> ||_    <-------------------/
> \__| Mr Trick
>
>
> >From: Martin Stachon <martin.stachon at worldonline.cz>
> >Reply-To: EUforum at topica.com
> >To: EUforum <EUforum at topica.com>
> >Subject: Re: Graphics in Win32lib
> >Date: Thu, 10 Oct 2002 18:03:55 +0200
> >
> >
> >Try my "Stretch Bitmap Demo" in Rec Usr Contrib.
> >
> >     Martin
> >
> > > GDI? What is that?
> > >
> > >
> > > >From: Don Phillips <EuNexus at yahoo.com>
> > > >Reply-To: EUforum at topica.com
> > > >To: EUforum <EUforum at topica.com>
> > > >Subject: Re: Graphics in Win32lib
> > > >Date: Wed, 9 Oct 2002 22:13:42 -0700 (PDT)
> > > >
> > > >
> > > >Try StretchBlt and SetStretchBltMode from GDI32.  These functions
copy
> >from
> > > >one DC to another but allow the destination rectangle to be either
> >smaller
> > > >or larger the the source rectangle.  If so, Windows will scale the
> >image
> > > >accordingly.
> > > >Don Phillips
> > > >
> > > >I need to be able to display background images in my window, but as
> >this is
> > > >destined to be used by people other than myself, I want it to scale
> > > >gracefully on other resolutions.
> > > >
> > > >At the moment I just use loadbitmapfromfile and BLT it to the screen,
> >but
> > > >how would I have a single bitmap image, that I can output as a
smaller
> > > >size?
> > > >
> > > >I know how to make a simple scaling algorithm if one does not already
> > > >exist,
> > > >but how would I get access to the 2d array that loadbitmapfromfile no
> >doubt
> > > >puts somewhere, and how would I save my altered array into a bitmap
> >object?
> > > >
> > > >...If that made sense, that is.
> > > >=====================================================
> > > >.______<-------------------\__
> > > >/ _____<--------------------__|===
> > > >||_ <-------------------/
> > > >\__| Mr Trick
> > > >
> > > >
> > > ><P>Try StretchBlt and SetStretchBltMode from GDI32.&nbsp; These
> >functions
> > > >copy from one DC to another but allow the destination rectangle to be
> > > >either smaller or larger the the source rectangle.&nbsp; If so,
Windows
> > > >will scale the image accordingly.
> > > ><P>Don Phillips
> > > ><P>&nbsp;<B><I>mistertrik at hotmail.com</I></B> wrote:
> > > ><b><a href="http://news.yahoo.com/">Yahoo! News</a></b> - Today's
> >headlines
> > > >
> > > >
> > > =====================================================
> > > .______<-------------------\__
> > > / _____<--------------------__|===
> > > ||_    <-------------------/
> > > \__| Mr Trick
> > >
> > >
>
>
>