| joel2001k |
12-26-2009 05:57 PM |
a gtk_misc_set_alignment example
I wrote an example for you to demonstrate how I could work. Did you pack the label correctly? Can you tell me if the code below works for you?
Code:
#include <stdlib.h>
#include <gtk/gtk.h>
void buttons_create(GtkHBox *hbox);
void button_up_callback(GtkButton *button, gpointer data);
void button_left_callback(GtkButton *button, gpointer data);
void button_right_callback(GtkButton *button, gpointer data);
void button_down_callback(GtkButton *button, gpointer data);
gboolean delete_event_callback(GtkWidget *widget, GdkEvent *event, GtkWindow *window);
GtkButton **button;
GtkLabel *label;
gboolean up, left;
void
buttons_create(GtkHBox *hbox)
{
GtkAlignment *alignment;
GtkTable *table;
GtkArrow *arrow;
alignment = (GtkAlignment *) gtk_alignment_new(0.0, 0.0, 1.0, 1.0);
gtk_box_pack_start((GtkBox *) hbox, (GtkWidget *) alignment, FALSE, FALSE, 0);
table = (GtkTable *) gtk_table_new(3, 3, TRUE);
gtk_container_add((GtkContainer *) alignment, (GtkWidget *) table);
/* create and pack buttons */
button = (GtkButton **) malloc(4 * sizeof(GtkButton*));
button[0] = (GtkButton *) gtk_button_new();
gtk_table_attach_defaults(table,
(GtkWidget *) button[0],
1, 2,
0, 1);
arrow = (GtkArrow *) gtk_arrow_new(GTK_ARROW_UP,
GTK_SHADOW_NONE);
gtk_container_add((GtkContainer *) button[0], (GtkWidget *) arrow);
button[1] = (GtkButton *) gtk_button_new();
gtk_table_attach_defaults(table,
(GtkWidget *) button[1],
0, 1,
1, 2);
arrow = (GtkArrow *) gtk_arrow_new(GTK_ARROW_LEFT,
GTK_SHADOW_NONE);
gtk_container_add((GtkContainer *) button[1], (GtkWidget *) arrow);
button[2] = (GtkButton *) gtk_button_new();
gtk_table_attach_defaults(table,
(GtkWidget *) button[2],
2, 3,
1, 2);
arrow = (GtkArrow *) gtk_arrow_new(GTK_ARROW_RIGHT,
GTK_SHADOW_NONE);
gtk_container_add((GtkContainer *) button[2], (GtkWidget *) arrow);
button[3] = (GtkButton *) gtk_button_new();
gtk_table_attach_defaults(table,
(GtkWidget *) button[3],
1, 2,
2, 3);
arrow = (GtkArrow *) gtk_arrow_new(GTK_ARROW_DOWN,
GTK_SHADOW_NONE);
gtk_container_add((GtkContainer *) button[3], (GtkWidget *) arrow);
/* connect buttons */
g_signal_connect((GObject *) button[0], "clicked\0",
G_CALLBACK(button_up_callback), NULL);
g_signal_connect((GObject *) button[1], "clicked\0",
G_CALLBACK(button_left_callback), NULL);
g_signal_connect((GObject *) button[2], "clicked\0",
G_CALLBACK(button_right_callback), NULL);
g_signal_connect((GObject *) button[3], "clicked\0",
G_CALLBACK(button_down_callback), NULL);
}
void
button_up_callback(GtkButton *button, gpointer data)
{
if(left)
gtk_misc_set_alignment((GtkMisc *) label, 0.0, 0.0);
else
gtk_misc_set_alignment((GtkMisc *) label, 1.0, 0.0);
up = TRUE;
}
void
button_left_callback(GtkButton *button, gpointer data)
{
if(up)
gtk_misc_set_alignment((GtkMisc *) label, 0.0, 0.0);
else
gtk_misc_set_alignment((GtkMisc *) label, 0.0, 1.0);
left = TRUE;
}
void
button_right_callback(GtkButton *button, gpointer data)
{
if(up)
gtk_misc_set_alignment((GtkMisc *) label, 1.0, 0.0);
else
gtk_misc_set_alignment((GtkMisc *) label, 1.0, 1.0);
left = FALSE;
}
void
button_down_callback(GtkButton *button, gpointer data)
{
if(left)
gtk_misc_set_alignment((GtkMisc *) label, 0.0, 1.0);
else
gtk_misc_set_alignment((GtkMisc *) label, 1.0, 1.0);
up = FALSE;
}
gboolean
delete_event_callback(GtkWidget *widget, GdkEvent *event, GtkWindow *window)
{
free(button);
gtk_main_quit();
return(FALSE);
}
int
main(int argc, char **argv)
{
GtkWindow *window;
GtkHBox *hbox;
gtk_init(&argc, &argv);
window = (GtkWindow *) gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size(window, 600, 400);
hbox = (GtkHBox *) gtk_hbox_new(FALSE, 0);
gtk_container_add((GtkContainer *) window, (GtkWidget *) hbox);
up = TRUE;
left = TRUE;
buttons_create(hbox);
label = (GtkLabel *) gtk_label_new("some text\0");
gtk_box_pack_start((GtkBox *) hbox, (GtkWidget *) label, TRUE, TRUE, 0);
gtk_misc_set_alignment((GtkMisc *) label, 0.0, 0.0);
gtk_widget_show_all((GtkWidget *) window);
g_signal_connect((GObject *) window, "delete-event\0",
G_CALLBACK(delete_event_callback), window);
gtk_main();
return(0);
}
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