Re: [wxperl-users] Creating a BMP from scalar...

[Mattia B. <mat...@li...>]

On Sun, 17 Sep 2006 21:58:56 -0700
"Bradley K. Embree" <bk...@bk...> wrote:

  Hi,

> I have a scalar containing a bmp (generated by ChartDirector 
> (http://www.advsofteng.com/cdperl.html)) that I would like to create a 
> Wx::Bitmap from, which I will then draw on a panel.
> 
> Wx::Bitmap does not seem to be able to do this directly, but I thought I 
> could create a Wx::Bitmap from a Wx::Image.

  Correct.
 
> open my $fh, '<', \$chart_bmp or die "cannot open: $!";
> $bmp = Wx::Bitmap->new(
> 	Wx::Image->new( $fh, wxBITMAP_TYPE_BMP, -1 )
> );
> 
> Which gives me an error of 'DIB Header: Image width > 32767 pixels for 
> file.'.

  This should work, though. I will have a look at it.
Which wxPerl/wxWidgets versions and platform are you using?
 
> I've tested the contents of $chart_bmp by opening a filehandle and 
> printing the contents to the file and it is a valid bitmap. So I am a 
> bit lost as far as where to go next.
> 
> Is it possible to create a stream from a scalar? I've looked at 
> wxInputStream but the docs indicate that it is not implemented in wxPerl.

  Perl strams should be transparently wrapped into wxInputStreams.

Regards
Mattia