Re: How can I update the gdk-pixbuf raw data?

[zzojaji aim com]

Dear Andrey,

 Thanks alot for your guidance, but when i change the buffer data, image header is also changed, and when 
using "gdk_pixbuf_loader_write", an error of "unrecognized image file format" will be arised, this is because 
that the image format is important for the loader.

 is it any way to skip this restriction?

Thanks,

Zahra Zojaji

  


 
 -----Original Message-----

 From: Andrey Tsyvarev <tsyvarev ispras ru>

 To: zzojaji aim com

 Cc: gtk-app-devel-list gnome org

 Sent: Fri, 15 May 2009 5:39 pm

 Subject: Re: How can I update the gdk-pixbuf raw data?

 

    
    Hello, Zahra.    You can use GdkPixbufLoader for retrieve pixbuf from raw data.  Code example:    
GdkPixbufLoader *loader = gdk_pixbuf_loader_new();  gdk_pixbuf_loader_write(loader, buffer, buffer_size, 
NULL);  gdk_pixbuf_loader_close(loader, NULL);  GdkPixbuf* pixbuf =      
gdk_pixbuf_copy(gdk_pixbuf_loader_get_pixbuf(loader));  g_object_unref(loader);        Now 'pixbuf' contains 
image, previously stored in 'buffer'.    If you want to do more complex things, than simple restoring pixbuf  
from buffer, you may read GdkPixbufLoader description  
http://library.gnome.org/devel/gdk-pixbuf/stable/GdkPixbufLoader.html      > Hello,      >   I am new 
to GTK and have a problem with gdk-pixbuf, How can I update the   pixbuf raw data?    >   There is a 
pixbuf constructed from an image file, I  want to  > change raw data behind it and upload new data back to 
pixbuf. I  am  > using the "gdk_pIxbuf_save_to_buffer" for accessing raw data, but I   > don't know how 
to u
 pload the buffer back to the pixbuf!      >   Thanks, in advance,      >   Zahra Zojaji                
        > _______________________________________________  > gtk-app-devel-list mailing list  > 
gtk-app-devel-list gnome org  > http://mail.gnome.org/mailman/listinfo/gtk-app-devel-list        --   
Andrey Tsyvarev      Linux Verification Center, ISPRAS   web:    http://www.linuxtesting.org   e-mail: 
tsyvarev ispras ru