gtk_statusbar_push!!

[ferri_marllo gva es]

Hi everyone!!
I need your help...
I built a window with glade_gtk,including an statusbar,but the problem is that i
want to write in the statusbar,different sentences telling me about the
process...just after click one button of my window.
Like this...
first: "processing file...."
(and after process it)
"end of process"

The code i'm using is this:

gtk_statusbar_push(GTK_STATUSBAR(statusbar1),1,"Procesing...");

/********now,is my code about the process*****************/

gtk_statusbar_pop (GTK_STATUSBAR(statusbar1),1);                                

gtk_statusbar_push(GTK_STATUSBAR(statusbar1),1,"End..); 

/********************close the process******************/

The problem is that during the process,the statusbar is empty,and when it
finished writes in the bar  "End...".

I tried to put sleep(5000) to delay the process(i thought that maybe the process
is so quikly)but neither happes)

Can you help me??
Thanks a lot!!!