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 Post subject: Need small help on ZOOM label
PostPosted: Wed Apr 16, 2008 4:30 am 
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Joined: Wed Apr 16, 2008 4:02 am
Posts: 1
I'm not a gtk+ programmer. I don't even know C.

I need small help. I spent a week on google and learned few things.

My requirement: I need a button which does Zoom Out of Label.

I tried using Struct , but I'm not able to pass it to callback.

Please look at code. It contains a label and a button. When a button is clicked , label font size should be increased.

Quote:


#include <gtk/gtk.h>

gint delete_event( GtkWidget *widget,
GdkEvent *event,
gpointer data )
{
gtk_main_quit();
return(FALSE);
}

void callback_( GtkWidget *widget,
gpointer data )
{
// Incriment label font size
}


int main( int argc,
char *argv[] )
{
GtkWidget *window;
GtkWidget *button;
GtkWidget *box1;
GtkWidget *label;

gtk_init (&argc, &argv);

window = gtk_window_new (GTK_WINDOW_TOPLEVEL);

gtk_window_set_title (GTK_WINDOW (window), "Hello Buttons!");

gtk_signal_connect (GTK_OBJECT (window), "delete_event",
GTK_SIGNAL_FUNC (delete_event), NULL);

gtk_container_set_border_width (GTK_CONTAINER (window), 10);

box1 = gtk_hbox_new(FALSE, 0);
label = gtk_label_new ("I Want to ZOOM this text ");

gtk_container_add (GTK_CONTAINER (window), box1);

gtk_box_pack_start(GTK_BOX(box1), label, TRUE, TRUE, 0);

gtk_widget_show(label);

button = gtk_button_new_with_label (" Click me to ZOOM that text ");

gtk_signal_connect (GTK_OBJECT (button), "clicked",
GTK_SIGNAL_FUNC (callback_), NULL);

gtk_box_pack_start(GTK_BOX(box1), button, TRUE, TRUE, 0);

gtk_widget_show(button);

gtk_widget_show(box1);

gtk_widget_show (window);

gtk_main ();

return(0);
}




Please Add the extra logic to change the font size or point a relent example.

Thanks in Advance


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