#include <gtk/gtk.h>
How to get width and height while resizing window?
I used size-allocate event as in the test program below:
static gboolean szalloccallback ( GtkWidget * w,
GtkAllocation * a,
char * data )
{
printf ( " szalloc (x,y)=(%d,%d) (w,h)=(%d,%d)\n" ,
a->x , a->y , a->width , a->height ) ;
return false;
}
int main ( int argc , char * argv[] )
{
gtk_init(&argc, &argv);
GtkWidget * window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_position(GTK_WINDOW(window), GTK_WIN_POS_CENTER);
gtk_window_set_default_size(GTK_WINDOW(window), 250, 180);
gtk_window_set_title(GTK_WINDOW(window), "Testing");
g_signal_connect(window, "size-allocate" ,
G_CALLBACK (szalloccallback), NULL);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
and found that the size-allocate callback was always called twice with the same
parameters. For example, got the following when increasing the height:
szalloc (x,y)=(0,0) (w,h)=(250,181)
szalloc (x,y)=(0,0) (w,h)=(250,181)
szalloc (x,y)=(0,0) (w,h)=(250,182)
szalloc (x,y)=(0,0) (w,h)=(250,182)
szalloc (x,y)=(0,0) (w,h)=(250,183)
szalloc (x,y)=(0,0) (w,h)=(250,183)
szalloc (x,y)=(0,0) (w,h)=(250,184)
szalloc (x,y)=(0,0) (w,h)=(250,184)
I don't understand why there is a second call. Of course I only need one. How
can I stop the second?
OR is there a better way, perhaps using different signals, to get
width and height while resizing a window?
Ken
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