我正在使用带有 GTK+ 的树莓派，意思是 ARM+Debian+GTK+。但即使是 GTK 网站的示例在我的环境中也总是失败。像：
#include <gtk/gtk.h>
int main( int argc,
char *argv[] )
{
GtkWidget *window;
//gtk_init (&argc, &argv);
gtk_init_check(&argc, &argv);
window = gtk_window_new (GTK_WINDOW_TOPLEVEL);
gtk_widget_show (window);
gtk_main ();
return(0);
}
我编译了这个
gcc -g gtktest.cpp -o base `pkg-config gtk+-2.0 --cflags --libs`
并成功。运行它时，我得到：
(base:12760): GLib-GObject-WARNING **: invalid (NULL) pointer instance
(base:12760): GLib-GObject-CRITICAL **: g_signal_connect_data: assertion `G_TYPE_CHECK_INSTANCE (instance)' failed
(base:12760): Gtk-WARNING **: Screen for GtkWindow not set; you must always set
a screen for a GtkWindow before using the window
(base:12760): Gdk-CRITICAL **: IA__gdk_screen_get_default_colormap: assertion `GDK_IS_SCREEN (screen)' failed
(base:12760): Gdk-CRITICAL **: IA__gdk_colormap_get_visual: assertion `GDK_IS_COLORMAP (colormap)' failed
(base:12760): Gdk-CRITICAL **: IA__gdk_screen_get_default_colormap: assertion `GDK_IS_SCREEN (screen)' failed
(base:12760): Gdk-CRITICAL **: IA__gdk_screen_get_root_window: assertion `GDK_IS_SCREEN (screen)' failed
(base:12760): Gdk-CRITICAL **: IA__gdk_screen_get_root_window: assertion `GDK_IS_SCREEN (screen)' failed
(base:12760): Gdk-CRITICAL **: IA__gdk_window_new: assertion `GDK_IS_WINDOW (parent)' failed
Segmentation fault
只使用 gtk_init() 也会导致错误。我检查了 DISPLAY 变量并尝试将其设置为 < my IP >:0.0 但没有效果。我怀疑这可能是GTK无法获取显示资源的问题，但我没有找到解决这个问题的方法。
仅供参考，我正在使用腻子 SSH 连接到树莓派。