[SOLVED] textbox in C

widapol · 10-20-2010, 04:31 PM

Hi all,
I am using gtk to program GUI. How can I show the output of shell command into a textbox, ex ps -efc command ?

MTK358 · 10-20-2010, 07:20 PM

This question is more about capturing the output of a process, not displaying it in a text box.

paulsm4 · 10-20-2010, 07:22 PM

The easiest way I can think of is:
1. Use popen() to read the text:

Code:

  #define MAXLEN 80
  char input_buf[MAXLEN+1] = "";
  FILE *fp = popen ("ps -efc", "r");
  if (fp)
  {
    fgets (input_buf, MAXLEN, fp);
    input_buf[strlen(input_buf)-1] = '\0';
  }

2. Use a GTK Text View widget to display it:

Code:

  GtkWidget *view = NULL;
  GtkTextBuffer *buffer = NULL;

  view = gtk_text_view_new ();
  buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
  gtk_text_buffer_set_text (buffer, input_buf, strlen (input_buf));
  ...

widapol · 10-21-2010, 11:45 AM

It works. Thanks !