how to display value in GTK

[vineeta7]

Hi

I want to disply value (which is continously changing) in gtk.

There is a function for text which display text:gtk_entry_append_text(GTK_ENTRY(entry1), " ");

in a similiar way is there any function to display value..

Please reply


regards

vineeta7

[aliov]

You can use labels do to this .

after declaring the label you do .

gchar * val = g_strdup_printf("%d", i);

gtk_label_set_text(GTK_LABEL(label), val );

If this is no enough for you , and if you want to display a large text something like integrating a terminal debugging output tell me it's possible .

Regards .

[vineeta7]

ya i tried it.2 times it was running.Then I got a fragmentation error.How to resolve fragmentation error???

I am using 1 thread for GTK application (GUI), 1 thread for counter, one more thread for displaying message on command line.

why to free the car variable????

And now I am not getting GTK window, when I execute the output file.why this is happening?????

[aliov]

If you want to show the same counter you don't have to free the char *val from the memory , so probably this might be your problem .

about the error, are you getting fragmentation error or segmentation fault !

you can debug your program by using the GNU debugger , let's say your binary program is called display :

gdb display

and then type run , this will start the program and then it'll gives you information about problem .

continue ( to continue running in case the program produces an error ).

quit to exit .


Hope this help
Regards.

[vineeta7]

ok ...
i ll check that through debug

I want to display a counter which is increamenting by 1 second


I have attached samspec.cpp samspecCnt.cpp files.Please see attachment.
when execute o/p.Counter value is not automatically changing in a table.(I need to shake mouse over a table).I am getting error like this.

(output:5001): Gtk-CRITICAL **: file gtkentry.c: line 3360 (gtk_entry_set_text): assertion `GTK_IS_ENTRY (entry)' failed

(output:5001): Gtk-CRITICAL **: file gtkentry.c: line 3381 (gtk_entry_append_text): assertion `GTK_IS_ENTRY (entry)' failed

(output:5001): Gtk-CRITICAL **: file gtkentry.c: line 3360 (gtk_entry_set_text): assertion `GTK_IS_ENTRY (entry)' failed

(output:5001): Gtk-CRITICAL **: file gtkentry.c: line 3381 (gtk_entry_append_text): assertion `GTK_IS_ENTRY (entry)' failed


Please reply whether my code is correct or not?? .

Regards
vineeta7

P.S->Do i need to use dynamic memory allocation for storing counter value.

[aliov]

It seems the while running the constructure the retMsgThread=pthread_create(&Message_thread,NULL,M essage_fun,(void*)msg1);
runs before Menu_fun , since you are defining the entry in the second function, then the entry still a GtkWidget structure without being initialized to GtkEntry .

so entry1 = gtk_entry_new(); has to be executed before writing on it any text .

Regards.

[vineeta7]

I have added ot mes_fun in while loop byt before mutex lock then i am getting this error:

(samspec:6290): Gtk-CRITICAL **: file gtktable.c: line 596 (gtk_table_attach): assertion `GTK_IS_WIDGET (child)' failed

(samspec:6290): Gtk-CRITICAL **: file gtktable.c: line 596 (gtk_table_attach): assertion `GTK_IS_WIDGET (child)' failed

[aliov]

Strange , did you delete the other definition in the Menu_fun function ! well usually i do like this and i never had a problem , well your variables are global and that's fine so !!! make sure that you have the declaration only ones and you didn't put it inside a loop .

Regards.