Hi All,

I am getting error message when i am using gtktext widget. here i am posting my code as well as error messgae.

Code is here.

1 /* hello-gtk.c */
2
3 #include <gtk/gtk.h>
4 #include <gtk/gtktext.h>
5
6 gint QuitProg(GtkWidget *widget, gpointer gdata){
7
8 gtk_main_quit();
9 return (FALSE);
10
11 }
12
13 int main (int argc, char *argv[]){
14
15 GtkWidget *window;
16 GtkWidget *text_pane;
17
18 gtk_init(&argc, &argv); /*required initializing */
19
20 window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
21 gtk_widget_set_usize(window,200,100);
22 gtk_window_set_title(GTK_WINDOW(window) , "First Program");
23 gtk_container_set_border_width(GTK_CONTAINER(window),5);
24
25 gtk_signal_connect (GTK_OBJECT (window), "delete_event", GTK_SIGNAL_FUNC(QuitProg), NULL);
26
27 text_pane = gtk_text_new(NULL, NULL);
28 gtk_text_set_editable(GTK_TEXT(text_pane) , FALSE);
29 gtk_container_add(GTK_CONTAINER(window) , text_pane);
30 gtk_widget_realize(text_pane);
31 gtk_text_insert(GTK_TEXT(text_pane) , NULL , NULL , NULL, "Hello Linux World \n\n" , -1);
32
33 gtk_widget_show(text_pane);
34 gtk_widget_show (window);
35
36 gtk_main ();
37
38 }


i am trying it to compile by this command.

g++ -o hello-gtk hello-gtk.c `pkg-config gtk+-2.0 --cflags --libs`

but getting error messages

hello-gtk.c: In function ‘int main(int, char**)’:
hello-gtk.c:27: error: ‘gtk_text_new’ was not declared in this scope
hello-gtk.c:28: error: ‘GTK_TEXT’ was not declared in this scope
hello-gtk.c:28: error: ‘gtk_text_set_editable’ was not declared in this scope
hello-gtk.c:31: error: ‘gtk_text_insert’ was not declared in this scope

Hi -

On my system, the definition for GTK_TEXT happens to be here:
Similarly, type prototype for gtk_text_new() is in the same header, gtktext.h =>
So clearly, you seem to be doing everything right.

SUGGESTION:
1. type "pkg-config gtk+-2.0 --cflags --libs" from the command line

2. Make sure it has a "-I" switch that corresponds to your install directory:
3. Check the gtktext.h file in the directory for GTK_TEXT, gtk_text_new(), and friends.

'Hope that helps

1 members found this post helpful.

Thanks 14moose,

I have tried two compilers with your suggestions, But still different errors.Please find here both g++ & gcc commands and errors.

Command:- g++ -o hello-gtk hello-gtk.c `pkg-config gtk+-2.0 --cflags --libs` -l /user/include/gtk-2.0

Errors:- hello-gtk.c: In function ‘int main(int, char**)’:
hello-gtk.c:27: error: ‘gtk_text_new’ was not declared in this scope
hello-gtk.c:28: error: ‘GTK_TEXT’ was not declared in this scope
hello-gtk.c:28: error: ‘gtk_text_set_editable’ was not declared in this scope
hello-gtk.c:31: error: ‘gtk_text_insert’ was not declared in this scope

Command:- gcc -o hello-gtk hello-gtk.c `pkg-config gtk+-2.0 --cflags --libs` -l /user/include/gtk-2.0

Errors:- hello-gtk.c: In function ‘main’:
hello-gtk.c:27: warning: assignment makes pointer from integer without a cast
/usr/bin/ld: cannot find -l/user/include/gtk-2.0/
collect2: ld returned 1 exit status

By -l option i mean to give the path for the GTK's header files which they are resides. am i right ?

Hi -

1. Please type "pkg-config gtk+-2.0 --cflags --libs" from a command prompt, and show us the output.

2. In typical *nix fashion, the directory is actually "/usr" (not "/user").

3. "-I" (capital-eye) is so the compiler can find your header (.h) files.

"-l" (little-ell) is so the linker can find your libraries (.a or .so).

Neither one has a space after it:

EXAMPLES:
-I/usr/include/gtk-2.0
-l/usr/lib/gtk-2.0

Pkg-config should "know" which flags to use. Please run the command and post the output.

Thank you in advance

Thanks 14moose,
First thanks to care fully read my post.

i have corrected here my fault. But still i am getting errors at compiling. now i will explaining here my full gtk structure as well as a new commands i have fired here.

first see here my directory structre of gtk-2.0

[root@Nainesh-Linux GTK]# ls /usr/include/gtk-2.0/ -liah
total 44K
5916240 drwxr-xr-x. 6 root root 4.0K 2009-09-04 06:56 .
5881857 drwxr-xr-x. 143 root root 16K 2010-09-08 12:06 ..
5916241 drwxr-xr-x. 2 root root 4.0K 2009-10-27 13:34 gdk
5916242 drwxr-xr-x. 2 root root 4.0K 2009-10-27 13:34 gdk-pixbuf
5916243 drwxr-xr-x. 2 root root 4.0K 2009-10-27 13:34 gdk-pixbuf-xlib
5916290 drwxr-xr-x. 2 root root 12K 2010-09-14 15:20 gtk

[root@Nainesh-Linux GTK]# gcc -o hello-gtk hello-gtk.c `pkg-config gtk+-2.0 --cflags --libs` -I /usr/include/gtk-2.0/
hello-gtk.c: In function ‘main’:
hello-gtk.c:27: warning: assignment makes pointer from integer without a cast
/tmp/ccqdXCgZ.o: In function `main':
hello-gtk.c.text+0x11a): undefined reference to `GTK_TEXT'
hello-gtk.c.text+0x167): undefined reference to `GTK_TEXT'
collect2: ld returned 1 exit status


[root@Nainesh-Linux GTK]# g++ -o hello-gtk hello-gtk.c `pkg-config gtk+-2.0 --cflags --libs` -I /usr/include/gtk-2.0/
hello-gtk.c: In function ‘int main(int, char**)’:
hello-gtk.c:27: error: ‘gtk_text_new’ was not declared in this scope
hello-gtk.c:28: error: ‘GTK_TEXT’ was not declared in this scope
hello-gtk.c:28: error: ‘gtk_text_set_editable’ was not declared in this scope
hello-gtk.c:31: error: ‘gtk_text_insert’ was not declared in this scope

Let me ask you again:

1. *Please* post the output of "pkg-config gtk+-2.0 --cflags --libs"!

2. Please *don't* put a space between "-I" and "/usr/include/gtk-2.0/"!

Yes 14Moose

get here my out put of "pkg-config gtk+-2.0 --cflags --libs"
[root@Nainesh-Linux C]# pkg-config gtk+-2.0 --cflags --libs
-I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/libpng12 -lgtk-x11-2.0 -lgdk-x11-2.0 -latk-1.0 -lgio-2.0 -lpangoft2-1.0 -lgdk_pixbuf-2.0 -lpangocairo-1.0 -lcairo -lpango-1.0 -lfreetype -lfontconfig -lgobject-2.0 -lgmodule-2.0 -lglib-2.0

Also find here out put without space between "-I" and "/usr/include/gtk-2.0"

[root@Nainesh-Linux GTK]# gcc -o hello-gtk hello-gtk.c `pkg-config gtk+-2.0 --cflags --libs` -I/usr/include/gtk-2.0
hello-gtk.c: In function ‘main’:
hello-gtk.c:28: warning: assignment makes pointer from integer without a cast
/tmp/ccYx3YWG.o: In function `main':
hello-gtk.c.text+0x11a): undefined reference to `GTK_TEXT'
hello-gtk.c.text+0x167): undefined reference to `GTK_TEXT'
collect2: ld returned 1 exit status

[root@Nainesh-Linux GTK]# g++ -g -o hello-gtk hello-gtk.c `pkg-config gtk+-2.0 --cflags --libs` -I/usr/include/gtk-2.0
hello-gtk.c: In function ‘int main(int, char**)’:
hello-gtk.c:28: error: ‘gtk_text_new’ was not declared in this scope
hello-gtk.c:29: error: ‘GTK_TEXT’ was not declared in this scope
hello-gtk.c:29: error: ‘gtk_text_set_editable’ was not declared in this scope
hello-gtk.c:32: error: ‘gtk_text_insert’ was not declared in this scope

nainesh -

Good. Progress Thank you!

Now....

1. As I said above, "pkg-config" should "know" where your GTK 2.0 headers and libraries are. This is where your "pkg-config" thinks they're installed on your system:

2. As I also said above, the first error, "hello-gtk.c:28: error: ‘GTK_TEXT’ was not declared in this scope" is a COMPILE error. It should not occur if you have the right include files (e.g. the right "-I" path).

Q: Do you have a file "/usr/include/gtk-2.0/gtk/gtktext.h"?

Q: Does your gtktext.h contain a line that looks like this?
3. The next error, "hello-gtk.c.text+0x11a): undefined reference to `GTK_TEXT'", is a LINK error. It's completely separate and distinct from the first one ("‘GTK_TEXT’ was not declared in this scope").

But let's assume for now that it might be a side-effect of 2), the compile error.

Please answer the questions in "2)" above, post back the results, and we'll take it from there.

'Hope that helps!

PS:
Hint:
if you fix the compile error, but get link errors, then we'll go BACK to your "pkg-conf" output, and start looking at your "-L" (library path) flags.

But GTK_TEXT should *never* occur as a link error (like you're getting), because it's a #define (not a translation unit).

So again - let's focus on getting a clean compile. Please resolve the issues in 2) first.

Dear 14Moose,
As per your second question please find here my gtktext.h path as well as containing GTK_TEXT macro.

[root@Nainesh-Linux GTK]# cat -n /usr/include/gtk-2.0/gtk/gtktext.h |grep "#define GTK_TEXT(obj)"
39 #define GTK_TEXT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_TEXT, GtkText))

Hi -

Here's the actual problem:
And here's how to compile your program:
(the syntax would be identical for gcc)

Thanks 14Moose,

You have solved my problem. my programme now compiled and runnig. thanks a lot. please be in touch can you give me your email id. so, i can contact you if facing any problem in future.