Hello all,
I'm trying to cross-compile GTK+ for Windows on Linux (Debian) using MXE (http:/mxe.cc/). My goal is to produce a statically linked executable that just runs without having to install anything else (libraries, themes, etc.). I saw that in a previous thread someone said that GTK+ can't be statically linked, but that isn't true, it actually works fine (at least on Windows).
There is only one thing that doesn't work: the icons that are part of the standard interface (for example, the "+" and "-" that appear on the buttons of a GtkSpinButton) aren't displayed. When I run it, the program prints a warning saying that it can't find the "hicolor" theme, and all icons are replaced by a "missing icon" symbol.
I suppose that if I installed the theme on the target system, it would work (although I'm not sure in which directories GTK+ looks for it). But as I wrote above, I want the icons to be embedded in the executable, so that one can just download the file and run it. That is definitely possible with GTK+ 2, I compiled several programs and they all work without issues. But I haven't been able to make it work with GTK+ 3, so I'm asking for your help.
The problem is demonstrated by the attached screenshots:
- a window containing a GtkSpinButton (spinbutton-gtk3.png)
- a window containing a GtkToolbar with two buttons (toolbar-gtk3.png)
- the latter program rewritten for GTK+ 2 (toolbar-gtk2.png). As you can see, here the icons are displayed correctly.
I'm also attaching the source code of those examples.
I've tried to dig into the GTK+ sources to find where the icons are generated, but got lost. I found that there's a program called gtk-update-icon-cache that I guess might have to do with that, but I didn't understand how it's supposed to be used and where it's called during the build process (if it's called at all).
To reproduce what I did, go to http:/mxe.cc/ and follow the instructions. The GTK+ 3 library is configured with the following options (specified in the src/gtk3.mk file in the MXE source tree):
--disable-glibtest --disable-cups --disable-test-print-backend --disable-gtk-doc --disable-man --with-included-immodules --enable-win32-backend
MXE also applies a few patches to the GTK+ sources (file src/gtk3-1-fixes.patch).
Thank you in advance for any help that you can provide.
Gerardo
Attachment:
spinbutton-gtk3.png
Description: PNG image
Attachment:
toolbar-gtk3.png
Description: PNG image
Attachment:
toolbar-gtk2.png
Description: PNG image
#include <gtk/gtk.h>
void activate(GtkApplication *app, gpointer user_data)
{
GtkWidget *window, *spinbutton;
GtkAdjustment *adjustment;
window = gtk_application_window_new(app);
adjustment = gtk_adjustment_new(5, 0, 10, 1, 1, 0);
spinbutton = gtk_spin_button_new(adjustment, 1, 0);
gtk_container_add(GTK_CONTAINER(window), spinbutton);
gtk_widget_show_all(window);
}
int main(int argc, char *argv[])
{
GtkApplication *app;
int status;
app = gtk_application_new(NULL, G_APPLICATION_FLAGS_NONE);
g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
status = g_application_run(G_APPLICATION(app), argc, argv);
g_object_unref(app);
return status;
}
#include <gtk/gtk.h>
void print_hello(GtkWidget *widget, gpointer data)
{
g_print("Hello World\n");
}
void activate(GtkApplication *app, gpointer user_data)
{
GtkWidget *window, *box, *toolbar;
GtkWidget *icon_new, *icon_quit;
GtkToolItem *tool_new, *tool_quit;
window = gtk_application_window_new(app);
gtk_window_set_default_size(GTK_WINDOW(window), 200, 200);
box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
gtk_container_add(GTK_CONTAINER(window), box);
toolbar = gtk_toolbar_new();
gtk_box_pack_start(GTK_BOX(box), toolbar, FALSE, FALSE, 0);
icon_new = gtk_image_new_from_icon_name("document-new",
GTK_ICON_SIZE_LARGE_TOOLBAR);
tool_new = gtk_tool_button_new(icon_new, NULL);
gtk_toolbar_insert(GTK_TOOLBAR(toolbar), tool_new, -1);
g_signal_connect(tool_new, "clicked", G_CALLBACK(print_hello), NULL);
icon_quit = gtk_image_new_from_icon_name("application-exit",
GTK_ICON_SIZE_LARGE_TOOLBAR);
tool_quit = gtk_tool_button_new(icon_quit, NULL);
gtk_toolbar_insert(GTK_TOOLBAR(toolbar), tool_quit, -1);
g_signal_connect_swapped(tool_quit, "clicked",
G_CALLBACK(gtk_widget_destroy), window);
gtk_widget_show_all(window);
}
int main(int argc, char *argv[])
{
GtkApplication *app;
int status;
app = gtk_application_new(NULL, G_APPLICATION_FLAGS_NONE);
g_signal_connect(app, "activate", G_CALLBACK(activate), NULL);
status = g_application_run(G_APPLICATION(app), argc, argv);
g_object_unref(app);
return status;
}
#include <gtk/gtk.h>
void print_hello(GtkWidget *widget, gpointer data)
{
g_print("Hello World\n");
}
int main(int argc, char *argv[])
{
GtkWidget *window, *vbox, *toolbar;
GtkToolItem *tool_new, *tool_quit;
gtk_init(&argc, &argv);
window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_default_size(GTK_WINDOW(window), 200, 200);
g_signal_connect(G_OBJECT(window), "destroy",
G_CALLBACK(gtk_main_quit), NULL);
vbox = gtk_vbox_new(FALSE, 0);
gtk_container_add(GTK_CONTAINER(window), vbox);
toolbar = gtk_toolbar_new();
gtk_box_pack_start(GTK_BOX(vbox), toolbar, FALSE, FALSE, 0);
tool_new = gtk_tool_button_new_from_stock(GTK_STOCK_NEW);
gtk_toolbar_insert(GTK_TOOLBAR(toolbar), tool_new, -1);
g_signal_connect(tool_new, "clicked", G_CALLBACK(print_hello), NULL);
tool_quit = gtk_tool_button_new_from_stock(GTK_STOCK_QUIT);
gtk_toolbar_insert(GTK_TOOLBAR(toolbar), tool_quit, -1);
g_signal_connect_swapped(tool_quit, "clicked",
G_CALLBACK(gtk_widget_destroy), window);
gtk_widget_show_all(window);
gtk_main();
return 0;
}
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