Hi,

I am new to programming with GTK and am trying to create a small test window. I am getting a linker errors. Can someone please suggets me a solution for this.

The code in my program is:

#include <gtk/gtk.h>

static GtkWidget *main_window;

static void destroy(GtkWidget *widget gpointer data)
{
gtk_main(quit);
}

int main(int argc, char *argv[])
{
gtk_init(&argc, &argv);
main_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
gtk_window_set_title(GTK_WINDOW(main_window), "Sasank");
g_signal_connect(G_OBJECT(main_window),"destroy",G_CALLBACK(destroy,NULL);
gtk_widget_show_all(GTK_WIDGET(main_window));
gtk_main();
return 0;
}

The code is compiled using => gcc -o my_window.cpp `pkg-config --cflags --libs gtk+-2.0`

The errors I get are:
/usr/lib/gcc/i586-suse-linux/4.3/../../../crt1.o: In function `_start':
(.text+0x18): undefined reference to `main'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_event_request_motions'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_window_beep'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_color_to_string'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_threads_add_idle'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_threads_add_idle_full'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_window_thaw_toplevel_updates_libgtk_only'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_window_set_opacity'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_window_set_startup_id'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_threads_add_timeout'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_threads_add_timeout_full'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_window_freeze_toplevel_updates_libgtk_only'
/usr/lib/gcc/i586-suse-linux/4.3/../../../libgtk-x11-2.0.so: undefined reference to `gdk_notify_startup_complete_with_id'
collect2: ld returned 1 exit status
linux-ls4f:/ #

Regards

You do not invoke correctly gcc. The correct invocation would be:

Then "my_window" will be an executable.

For my installation the code has some mistakes. It is "gtk_main_quit()" and for g_signal_connect the invocation is "g_signal_connect(G_OBJECT(main_window),"destroy",G_CALLBACK(destroy),NULL);" (NULL is the last parameter of g_signal_connect and not the seccond of G_CALLBACK).