pixbuf manipulation

[Raghavendra <raghaven kumar gmail com>]

Thanks Mr.Muthiah.

but as i am very new to pixbuf manipulation
can u provide me the simplified code of a loading a image 
and displaying it.
btw ur color programs were nice

Also can we include transparent images into pixbufs?

Thank You 


On 5/19/05, Muthiah Annamalai <dearestchum yahoo co in> wrote:
> Like Ive been always yapping around my tutorial,
> see this http://cybernetics.freewebspace.com/gtk/
> for some tip on GdkPixbuf.



---------- Forwarded message ----------
From: Dehua Zhao <dzhao cs uno edu>
Date: May 9, 2005 7:32 PM
Subject: simple example of using gdk_pixbuf_new_from_file
To: gtk-app-devel-list gnome org
 
simple example of gdk_pixbuf
#include<gtk/gtk.h>
#include<gdk-pixbuf/gdk-pixbuf.h>
#include <stdlib.h>
#include<string.h>
#include<stdio.h> 

#include<string.h>

int main(int argc, char *argv[])
{
 GError *gerror;
 GdkPixbuf *originalpb, *pb;
 GdkPixbuf *rpb, *ipb;
 char filename[20];

 gtk_set_locale ();
 gtk_init (&argc, &argv); 

 strcpy(filename, argv[1]);

 originalpb = NULL;

 originalpb=gdk_pixbuf_new_from_file(inputimg,&gerror);
 if(!originalpb) {
 printf("error message: %s\n", gerror->message); 
 exit(1);
 }
 ....

 hei = gdk_pixbuf_get_height(originalpb)/downsampling;
 wid = gdk_pixbuf_get_width(originalpb)/downsampling;
 gdk_pixbuf_unref(originalpb);

 ....
 return 0; 
}

I got these errors after compiling it

pix-samp.c: In function `main':
pix-samp.c:43: error: `inputimg' undeclared (first use in this function) 
pix-samp.c:43: error: (Each undeclared identifier is reported only once
pix-samp.c:43: error: for each function it appears in.)
pix-samp.c:48: error: syntax error before '...' token
pix-samp.c:51: error: `downsampling' undeclared (first use in this function) 


and if i remove the downsampling and change inputimg to filename
it compiles but gives Segmentation Fault at runtime

can anyone help me out
Reply. 

Your problem might be to change this line 
> > gtk_init (&argc, &argv);
> as
> > gtk_init (NULL,NULL);
>
>
> Cheers
> Muthu.