guys, i am appending a piece of gtk test code. it saves the
internal filename buffer for espeak -f %s ifbuf to run
on--to be the user's voice. if i set
static char *prefix = talk;
then back up and enter another string in the box at the
bottom, strange things happen. Anybody know where i am
messing up?
tia,
gary
PS. i am thru with the play button and callback, but
would like to understand my errors above first!
--
Gary Kline kl...@thought.org http://www.thought.org Public Service Unix
Journey Toward the Dawn, E-Book: http://www.thought.org
The 8.57a release of Jottings: http://jottings.thought.org
Twenty-five years of service to the Unix community.
/*
* compile with:
* gcc -Wall -Wextra -Werror -g x.c -o x1 `pkg-config --cflags gtk+-2.0`
`pkg-config --libs gtk+-2.0`
*/
#include gtk/gtk.h
#include stdio.h
#include string.h
static int counter = 1;
static GtkWidget *label;
static char *suffix = .txt;
static char *prefix;
char ifbuf[1024]; /* internal filename buffer--CURRENT--for espeak -f */
#define DOT '.'
static void
update_label (void)
{
char buffer[1024];
memset (buffer, 0, sizeof buffer);
/*
If counter is 1, use markup to highlight text
*/
if (counter = 1)
{
if (prefix)
{
g_snprintf (buffer, 1023,
span foreground=\red\ background=\yellow\
size=\x-large\%s%c%d%s/span, prefix, DOT, counter, suffix);
}
else
{
g_snprintf (buffer, 1023,
span foreground=\red\ background=\yellow\
size=\x-large\%d%s/span, counter, suffix);
}
gtk_label_set_markup (GTK_LABEL (label), buffer);
}
else
{
if (prefix)
{
g_snprintf (buffer, 1023, %s%c%d%s, prefix, DOT, counter,
suffix);
}
else
{
g_snprintf (buffer, 1023, %d%s, counter, suffix);
}
gtk_label_set_label (GTK_LABEL (label), buffer);
}
}
static void
inc_button_click_cb (GtkButton * button, gpointer data)
{
(void) button;
GtkWidget *dec_button = data;
counter++;
/*
Change senstivity of the decrement button based on counter
*/
if (counter 0 !gtk_widget_is_sensitive (dec_button))
gtk_widget_set_sensitive (dec_button, TRUE);
/*
Update label to show updated counter
*/
if (prefix)
{
sprintf (ifbuf, %s%c%d%s, prefix, DOT, counter, suffix);
fprintf(stdout, DEBUG: internsl filename = [%s]\n, ifbuf);
}
else
{
sprintf (ifbuf, %d%s, counter, suffix);
fprintf(stdout, DEBUG: internsl filename = [%s]\n, ifbuf);
}
update_label ();
return;
}
static void
dec_button_click_cb (GtkButton * button, gpointer data)
{
(void) data;
counter--;
if (counter = 0)
{
counter = 1;
}
/*
Change senstivity of the decrement button based on counter
*/
if (counter 1 gtk_widget_is_sensitive (GTK_WIDGET (button)))
gtk_widget_set_sensitive (GTK_WIDGET (button), FALSE);
/*
Update label to show updated counter
*/
if (prefix)
{
sprintf (ifbuf, %s%c%d%s, prefix, DOT, counter, suffix);
fprintf(stdout, DEBUG: internsl filename = [%s]\n, ifbuf);
}
else
{
sprintf (ifbuf, %d%s, counter, suffix);
fprintf(stdout, DEBUG: internsl filename = [%s]\n, ifbuf);
}
update_label ();
return;
}
static void
entry_changed_cb (GtkEditable * editable, gpointer data)
{
(void) data;
/*
Caller has to free the text, so call g_free
*/
g_free (prefix);
/*
Get the complete text
*/
prefix = gtk_editable_get_chars (editable, 0, -1);
/*
Update label to show updated prefix
*/
update_label ();
return;
}
int
main (void)
{
GtkWidget *button_inc;
GtkWidget *button_dec;
GtkWidget *entry_label;
GtkWidget *entry;
GtkWidget *window;
GtkWidget *vbox;
gtk_init (NULL, NULL);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_window_set_position (GTK_WINDOW (window), GTK_WIN_POS_CENTER);
gtk_window_set_title (GTK_WINDOW (window), VoiceByComputer);
g_signal_connect (window, destroy, G_CALLBACK (gtk_main_quit), NULL);
vbox = gtk_vbox_new (FALSE, 5);
gtk_container_add (GTK_CONTAINER (window), vbox);
gtk_container_set_border_width (GTK_CONTAINER (window), 10);
label = gtk_label_new ();
update_label ();
button_dec = gtk_button_new_with_label (Decrease counter);
g_signal_connect (button_dec, clicked, G_CALLBACK (dec_button_click_cb),
NULL);
gtk_widget_set_sensitive (button_dec, FALSE);
button_inc = gtk_button_new_with_label (Increase counter);
