On 06/09/2013 09:21 AM, Thomas A. Moulton wrote:
I see a lot of questions about this and I have not found an answer
that works for me.
I create the chat window like this:
The printf above at times tells me the objects are not valid, but the
addresses have not changed.
Also the TextBuffer has a parent of 0! I even allocated and set the
buffer manually.
If there it no anything obvious wrong here I will strip it down to a
simpler test case
Tom
Ok here is a single file example of my code... it works the same way it
does in my larger project
Any suggestions would be GREATLY appreciated!
tom
/*
============================================================================
Name : Scrolled.c
Author : Tom Moulton
Version :
Copyright : (c) 2013 Thoomas A. Moulton, Public Domain
Description : Hello World in GTK+
============================================================================
*/
#include <gtk/gtk.h>
GtkNotebook *nb;
void Enter_Chat(GtkEntry *entry, GtkTextBuffer *buf) {
char line[512];
const gchar *cmd;
GtkTextIter endit;
cmd = gtk_entry_get_text(entry);
strcpy(line, cmd);
gtk_entry_set_text(entry, "");
gtk_text_buffer_get_end_iter(buf, &endit);
gtk_text_buffer_insert_with_tags(buf, &endit, line, -1, NULL, NULL);
}
void Chat_scroll_to_end(GtkTextBuffer *buf, GtkTextView *text) {
GtkTextMark *mark;
mark = gtk_text_buffer_get_mark(buf, "eob");
gtk_text_view_scroll_mark_onscreen(text, mark);
}
void ChatNew(void) {
GtkBox *chat;
GtkTextBuffer *buf;
GtkTextView *text;
GtkEntry *entry;
GtkScrolledWindow *scroll;
GtkTextIter endit;
GtkLabel *label;
text = (GtkTextView *)gtk_text_view_new();
gtk_text_view_set_editable(text, FALSE);
gtk_text_view_set_wrap_mode(text, GTK_WRAP_WORD_CHAR);
gtk_text_view_set_cursor_visible(text, FALSE);
buf = gtk_text_buffer_new(NULL);
gtk_text_view_set_buffer(text, buf);
scroll = (GtkScrolledWindow *)gtk_scrolled_window_new(NULL, NULL);
gtk_scrolled_window_set_policy(scroll, GTK_POLICY_NEVER,
GTK_POLICY_ALWAYS);
gtk_scrolled_window_add_with_viewport(scroll, GTK_WIDGET(text));
entry = (GtkEntry *)gtk_entry_new();
gtk_widget_set_size_request(GTK_WIDGET(entry), -1, 30);
chat = GTK_BOX(gtk_box_new(GTK_ORIENTATION_VERTICAL, 0));
gtk_box_pack_start(chat, GTK_WIDGET(scroll), TRUE, TRUE, 0);
gtk_box_pack_end(chat, (GtkWidget *)entry, FALSE, TRUE, 0);
g_signal_connect(G_OBJECT(entry), "activate",
G_CALLBACK(Enter_Chat), (gpointer)buf);
gtk_text_buffer_get_end_iter(buf, &endit);
gtk_text_buffer_create_mark(buf, "eob", &endit, FALSE);
g_signal_connect(G_OBJECT(buf), "changed",
G_CALLBACK(Chat_scroll_to_end), (gpointer)text);
label = (GtkLabel *)gtk_label_new("Test Scroll");
gtk_notebook_append_page(nb, GTK_WIDGET(chat), GTK_WIDGET(label));
}
int main (int argc, char *argv[])
{
GtkWidget *window;
gtk_init (&argc, &argv);
/* create the main, top level, window */
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
/* give it the title */
gtk_window_set_title (GTK_WINDOW (window), "Hello World");
/* Connect the destroy signal of the window to gtk_main_quit
* When the window is about to be destroyed we get a notification and
* stop the main GTK+ loop
*/
g_signal_connect (window, "destroy", G_CALLBACK (gtk_main_quit),
NULL);
nb = (GtkNotebook *)gtk_notebook_new();
ChatNew();
/* and insert it into the main window */
gtk_container_add (GTK_CONTAINER (window), GTK_WIDGET(nb));
/* make sure that everything, window and label, are visible */
gtk_widget_show_all (window);
/* start the main loop, and let it rest there until the application
is closed */
gtk_main ();
return 0;
}
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