Hi everyone,
wouldn't it be nice if some of who have already solved the bitmap processing
problem to give us newbies a bit of help and show use some sample code that:
1) gets the ENTIRE header
2) the BITMAP bits
3) show the BITMAP on the device.
4) differences between low res and hi res bitmaps....
the OS has been deemed as a deas OS and we're still asking for help on how to
display BITMAPS....
searching the web is no help.....
anywho, just a thought....
Luis
> Date: Fri, 27 Feb 2009 08:49:12 +0100
> From: michal.sel...@visicom.sk
> Subject: Re: Copying Tbmp/tAIB resources -- not working?
> To: palm-dev-forum@news.palmos.com
>
> the safest would be to use BmpGetSizes to obtain size of header and size of
> data
> so you will know how much you need to store. and as others wrote, you are
> caching only (incomplete) header in your code, use BmpGetBits to get data
>
> Ryan Rix wrote:
> > Hey guys,
> >
> > I am writing code to dynamically draw icons for an application launcher.
> > I am using a linked list to store all of the entries of the launcher,
> > which include both tAIB resource bitmaps (which are just BitmapType
> > written to a resource, right?) and generic BitmapTypes, all stored as
> > pointers in my node structure as a BitmapPtr icon.
> >
> > When I attempt to copy the resource to a static location in memory using
> >
> > newLink->icon=MemPtrNew( sizeof(BitmapType));
> > DmOpenRef ref=DmOpenDatabase(cn,id,dmModeReadWrite);
> > MemHandle h = DmGetResource( 'tAIB', 1000 );
> > if(h){
> > BitmapPtr oldIcon = MemHandleLock(h);
> > MemMove(newLink->icon, oldIcon, sizeof(BitmapType));
> > MemHandleUnlock(h);
> > }else{
> > newLink->icon=NULL;
> > }
> > DmReleaseResource(h)
> >
> > I usually get crap written to the BitmapPtr and when I draw it with
> > WinDrawBitmap I usually get either a crash or just crap drawn to the
> > screen, I've yet to get a working icon.
> > Does anyone have a clue why my code keeps crapping out like this?
> >
> > --
> > Thanks and best regards,
> > Ryan Rix
> > TamsPalm - The PalmOS Blog
> > (623)-239-1103 <-- Grand Central, baby!
> >
> > Jasmine Bowden - Class of 2009, Marc Rasmussen - Class of 2008, Erica
> > Sheffey - Class of 2009, Rest in peace.
>
> --
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