Hi, I am new to cairo. i am trying to rotate and scale a image . After doing the transformation i am displaying it in the window, it is shown properly . But when i am saving the surface using "cairo_surface_write_to_png" , the original image is saved again , the changes due to transformation is not reflected. And when i was trying to get the width of scaled surface using "cairo_image_surface_get_width", it is giving the original width only.My code segment is given below. ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// static gboolean on_expose_event(GtkWidget *widget,GdkEventExpose *event, gpointer data) {   cairo_t *cr; gint width,height; cr = gdk_cairo_create (widget->window); width = cairo_image_surface_get_width(image); height = cairo_image_surface_get_height(image);   cairo_translate(cr,width/2,height/2); cairo_scale(cr,scale_factor,scale_factor); cairo_rotate(cr,rotate_angle*M_PI/180.0);  g_print("rotate_angle %f \n",rotate_angle); gtk_widget_set_size_request (da, width,height);  g_print("width = %d height = %d \n",width,height);  cairo_set_source_surface(cr, image,-width/2,-height/2);  cairo_paint(cr);  cairo_surface_write_to_png (image, "sticker.png");   cairo_destroy(cr);   return FALSE; } int main(int argc, char *argv[]) {   /...../   image = cairo_image_surface_create_from_png(argv[1]);   width = cairo_image_surface_get_width(image);   height = cairo_image_surface_get_height(image);  g_print("width = %d height = %d \n",width,height); /...../ da = gtk_drawing_area_new (); gtk_widget_set_size_request (da, width,height); gtk_fixed_put(GTK_FIXED(fixed),da,50,50); g_signal_connect(da, "expose-event",G_CALLBACK (on_expose_event), NULL); /...../ cairo_surface_destroy(image);   return 0; } ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// Thanks in Advance. Regards, Chandra Shekhar Sengupta