In this example, we create a multi-line text area that the user can type in. It is possible to create a read-only
text area, but the text area in this example is editable. If we added a menu bar, a toolbar, and the code to
do a few basic things like opening and saving files, cutting and pasting text, and such, we'd have a very basic yet functional text editor.
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Source code for this example is also available in the file text.c
/*
*File name: text.c
*/
#include <gtk/gtk.h>
#include <glib.h>
/*-- This function allows the program to exit properly when the window is closed --*/
gint destroyapp (GtkWidget *widget, gpointer gdata)
{
g_print ("Quitting...\n");
gtk_main_quit();
return (FALSE);
}
int main (int argc, char *argv[])
{
/*-- Declare the GTK Widgets used in the program --*/
GtkWidget *window;
GtkWidget *text;
gchar *buffer = "This is some sample text";
/*-- Initialize GTK --*/
gtk_init (&argc, &argv);
/*-- Create the new window --*/
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
/*-- Create a text area --*/
text = gtk_text_new(NULL, NULL);
/*-- Set text area to be editable --*/
gtk_text_set_editable(GTK_TEXT (text), TRUE);
/*-- Connect the window to the destroyapp function --*/
gtk_signal_connect(GTK_OBJECT(window), "delete_event", GTK_SIGNAL_FUNC(destroyapp), NULL);
/*-- Add the text area to the window --*/
gtk_container_add(GTK_CONTAINER(window), text);
/*-- Add some text to the window --*/
gtk_text_insert(GTK_TEXT(text), NULL, NULL, NULL, buffer, strlen(buffer));
/*-- Set window border to zero so that text area takes up the whole window --*/
gtk_container_border_width (GTK_CONTAINER (window), 0);
/*-- Set the window to be 640 x 200 pixels --*/
gtk_window_set_default_size (GTK_WINDOW(window), 640, 200);
/*-- Set the window title --*/
gtk_window_set_title(GTK_WINDOW (window), "Text Area");
/*-- Display the widgets --*/
gtk_widget_show(text);
gtk_widget_show(window);
/*-- Start the GTK event loop --*/
gtk_main();
/*-- Return 0 if exit is successful --*/
return 0;
}
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