Memory management with GdkPixbuf

["Luis M. Fuentes" <luis fuentes gmx co uk>]

Hi!

I am developing an image processing application under GTK. I've just migrated 
from Windows-based Visual studio, so my knowledge of GTK+ is very reduced. 
I am using the GdkPixbuf function 
         wPixbuf = gdk_pixbuf_new_from_file ( path , NULL ) ;
to read jpeg files as follows. After copying the image bytes, I try to 
liberate the memory with 
        g_object_unref (wPixbuf);
but checking the system memory it's clear that the program is not freeing the 
allocated memory and because I work with video sequences, it ens up running 
out of memory. Could anyone possibly tell me what I'm doing wrong? Thak you 
for your help!!

Luis


PD: Here is the complete code of the function

bool Image::loadImage ( const char *path ) 
{
gint    nrws , nysz ;
if      ( g_file_test (path, G_FILE_TEST_EXISTS) != TRUE ) return false ;
GdkPixbuf           *wPixbuf = gdk_pixbuf_new_from_file ( path , NULL ) ;
if ( wPixbuf == NULL )  return false ;  
nrws = gdk_pixbuf_get_rowstride (wPixbuf) ;
nysz = gdk_pixbuf_get_height (wPixbuf) ;
if      ( nrws != rws || nysz != ysz )
        {
        xsz = gdk_pixbuf_get_width (wPixbuf) ;
        ysz = nysz ;            rws = nrws ;
        nch = gdk_pixbuf_get_n_channels (wPixbuf) ;
        bps = gdk_pixbuf_get_bits_per_sample (wPixbuf) ;
        imgbsz = (glong)(rws) * ysz ;
        if      ( pixBuf != NULL )      g_free((gpointer)(pixBuf)) ;
        }
pixBuf = (guchar*) g_memdup ( 
(gconstpointer)gdk_pixbuf_get_pixels(wPixbuf),imgbsz) ;
g_string_assign (fileN,path);   
g_object_unref (wPixbuf);
if      ( pixBuf == NULL )      return bready=false ;
return bready=true ;
}