looking inside a GdkPixbuf structure with ddd or gdb

Question

i would like to look inside of a GdkPixbuf structure for debugging purposes. but all i get is a <incomplete type> message.

ill show you a little snippet of example code.

//load image
GtkWidget *image = gtk_image_new_from_file("image.bmp");

//get the GdkPixbuf representation of the image
GdkPixbuf *pixbuff = gtk_image_get_pixbuf(GTK_IMAGE(image));

ok now i when i try to look inside the pixbuff structure i get the <incomplete type> message. How do i correctly look inside this structure using ddd or gdb debuggers ? im new a coding c and debugging.

ive tried the following in ddd

graph display (GdkPixbuf *)pixbuff and also right clicking on the variable and using different display options to no avail.

any ideas on how to correctly look inside this structure ?

score 0 · Answer 1 · edited May 23 '17 at 12:27

0

Try to cast it to GdkPixbuf * before printing. See also this question How to print <incomplete type> variable in gdb.

(gdb) p (GdkPixbuf *)pixbuff

edited May 23 '17 at 12:27

Community

1
1

answered Sep 30 '11 at 08:44

ks1322

33,961
14
109
164

yeah i tried that, i actually wrote that in my post 3rd line from the bottom. – maxim Sep 30 '11 at 14:54
Have you tried it in gdb? You wrote that you have tried it in ddd. – ks1322 Oct 02 '11 at 17:44

score 0 · Answer 2 · answered Oct 01 '11 at 17:07

0

I can't tell you how to do this in gdb but if you are open for other ideas, you can try this with gtkparasite like this: GTK_MODULES=gtkparasite yourapp. If you ever used Spy++ on Windows, it will fit right in.

answered Oct 01 '11 at 17:07

aquaherd

444
4
12

looking inside a GdkPixbuf structure with ddd or gdb

2 Answers2