/* testframe.c
* Copyright ( C ) 2007 Xan L ó pez < xan @ gnome . org >
*
* This library is free software ; you can redistribute it and / or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation ; either
* version 2 of the License , or ( at your option ) any later version .
*
* This library is distributed in the hope that it will be useful ,
* but WITHOUT ANY WARRANTY ; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE . See the GNU
* Library General Public License for more details .
*
* You should have received a copy of the GNU Library General Public
* License along with this library . If not , see < http : //www.gnu.org/licenses/>.
*/
#include <gtk/gtk.h>
#include <math.h>
/* Function to normalize rounding errors in FP arithmetic to
our desired limits */
#define EPSILON 1 e-10
static double
double_normalize (double n)
{
if (fabs (1 .0 - n) < EPSILON)
n = 1 .0 ;
else if (n < EPSILON)
n = 0 .0 ;
return n;
}
static void
spin_xalign_cb (GtkSpinButton *spin, GtkFrame *frame)
{
double xalign;
xalign = double_normalize (gtk_spin_button_get_value (spin));
gtk_frame_set_label_align (frame, xalign);
}
static void
quit_cb (GtkWidget *widget,
gpointer data)
{
gboolean *done = data;
*done = TRUE ;
g_main_context_wakeup (NULL);
}
int main (int argc, char **argv)
{
GtkWidget *window, *widget;
GtkBox *vbox;
GtkFrame *frame;
GtkGrid *grid;
float xalign;
gboolean done = FALSE ;
gtk_init ();
window = gtk_window_new ();
gtk_window_set_default_size (GTK_WINDOW (window), 300 , 300 );
g_signal_connect (window, "destroy" , G_CALLBACK (quit_cb), &done);
vbox = GTK_BOX (gtk_box_new (GTK_ORIENTATION_VERTICAL, 5 ));
gtk_widget_set_margin_start (GTK_WIDGET (vbox), 12 );
gtk_widget_set_margin_end (GTK_WIDGET (vbox), 12 );
gtk_widget_set_margin_top (GTK_WIDGET (vbox), 12 );
gtk_widget_set_margin_bottom (GTK_WIDGET (vbox), 12 );
gtk_window_set_child (GTK_WINDOW (window), GTK_WIDGET (vbox));
frame = GTK_FRAME (gtk_frame_new ("Test GtkFrame" ));
gtk_widget_set_vexpand (GTK_WIDGET (frame), TRUE );
gtk_box_append (GTK_BOX (vbox), GTK_WIDGET (frame));
widget = gtk_button_new_with_label ("Hello!" );
gtk_frame_set_child (GTK_FRAME (frame), widget);
grid = GTK_GRID (gtk_grid_new ());
gtk_grid_set_row_spacing (grid, 12 );
gtk_grid_set_column_spacing (grid, 6 );
gtk_box_append (GTK_BOX (vbox), GTK_WIDGET (grid));
xalign = gtk_frame_get_label_align (frame);
/* Spin to control :label-xalign */
widget = gtk_label_new ("label xalign:" );
gtk_grid_attach (grid, widget, 0 , 0 , 1 , 1 );
widget = gtk_spin_button_new_with_range (0 .0 , 1 .0 , 0 .1 );
gtk_spin_button_set_value (GTK_SPIN_BUTTON (widget), xalign);
g_signal_connect (widget, "value-changed" , G_CALLBACK (spin_xalign_cb), frame);
gtk_grid_attach (grid, widget, 1 , 0 , 1 , 1 );
gtk_window_present (GTK_WINDOW (window));
while (!done)
g_main_context_iteration (NULL, TRUE );
return 0 ;
}
Messung V0.5 in Prozent C=99 H=95 G=96
¤ Dauer der Verarbeitung: 0.11 Sekunden
(vorverarbeitet am 2026-07-03)
¤
*© Formatika GbR, Deutschland