gtk运行时出现这样的错误时怎么回事？

[cr4315]

程序在编译的时候没有出错，但是运行时却是出现这样的错误信息：
（xxx：3676）：Gtk-CRITICAL **：gtk_window_set_position:essertion 'GTK_IS_WINDOW(window)' failed
（xxx：3676）：Gtk-CRITICAL **：gtk_image_set_from_pixbuf:assertion 'GTK_IS_IMAGE(image)' failed
（xxx：3676）：GLib-GObject-WARING **: invalid(NULL) pointer instance
( xxx：3676）：GLib-GObject-CRITICAL **:g_signal_connect_data: assertion 'GTK_TYPE_CHECK_INSTANCE(instance)' failed
（xxx：3676）：GLib-GObject-WARING **: invalid(NULL) pointer instance
( xxx：3676）：GLib-GObject-CRITICAL **:g_signal_connect_data: assertion 'GTK_TYPE_CHECK_INSTANCE(instance)' failed
（xxx：3676）：GLib-GObject-WARING **: invalid(NULL) pointer instance
( xxx：3676）：GLib-GObject-CRITICAL **:g_signal_connect_data: assertion 'GTK_TYPE_CHECK_INSTANCE(instance)' failed
（xxx：3676）：GLib-GObject-WARING **: invalid(NULL) pointer instance
( xxx：3676）：GLib-GObject-CRITICAL **:g_signal_connect_data: assertion 'GTK_TYPE_CHECK_INSTANCE(instance)' failed
（xxx：3676）：GLib-GObject-WARING **: invalid(NULL) pointer instance
( xxx：3676）：GLib-GObject-CRITICAL **:g_signal_connect_data: assertion 'GTK_TYPE_CHECK_INSTANCE(instance)' failed
( xxx：3676）：Gtk-CRITICAL **:gtk_widget_show_all: assertion 'GTK_IS_WIDGET(widget)' failed
请问这是怎么回事，我在suse 里面已经将gtk，x11，wxwidget等都已经安装了。
请各位指导下小弟，小弟感激不尽，小弟先谢了！

[HuntXu]

普通的警告信息而已，仔细检查你的代码

[cr4315]

普通的警告信息而已，仔细检查你的代码

谢谢！代码在Ubuntu下面可以运行，没有出现这样的情况，可是一直到suse里面编译通过但是运行的时候出现这种错误，请问这是怎么回事，麻烦指导下！谢谢！

[HuntXu]

glib2和gtk2编译参数的问题，发行版使用不同的参数而已，有些警告隐藏了有些没有隐藏，错误原因是GTK_TYPE_CHECK_INSTANCE(instance)里面传了一个空指针于是产生了一个assertion，所以才让你检查代码的。具体自己看gtk2或者glib2的源码吧。不过像我用--disable-debug这样编译的话，这个assertion被跳过了，于是直接segfault，所以还是要注意一下的

[cr4315]

谢谢！我将出错的源程序贴出来：
g_window = GTK_WIDGET(gtk_builder_get_object(g_builder, "window"));
gtk_window_set_position(GTK_WINDOW(g_window), GTK_WIN_POS_CENTER);
button=GTK_WIDGET(gtk_builder_get_object(g_builder,"btnOk"));
button1=GTK_WIDGET(gtk_builder_get_object(g_builder,"btnCancel"));
button2=GTK_WIDGET(gtk_builder_get_object(g_builder,"btnAbout"));

radiobutton4=GTK_WIDGET(gtk_builder_get_object(g_builder,"radiobutton4"));
radiobutton9=GTK_WIDGET(gtk_builder_get_object(g_builder,"radiobutton9"));
radiobutton20=GTK_WIDGET(gtk_builder_get_object(g_builder,"radiobutton20"));

Orient_Dots=9;
image_point=GTK_WIDGET(gtk_builder_get_object(g_builder,"imageDot"));
point_9 = gdk_pixbuf_new_from_inline (28208+24,point9_sl,TRUE,NULL);
gtk_image_set_from_pixbuf(GTK_IMAGE(image_point),point_9);
gdk_pixbuf_unref (point_9);
g_signal_connect( G_OBJECT(button), "clicked",G_CALLBACK(on_btnOk_clicked), NULL);
g_signal_connect( G_OBJECT(button1), "clicked",G_CALLBACK(on_btnCancel_clicked), NULL);
g_signal_connect( G_OBJECT(button2), "clicked",G_CALLBACK(on_btnAbout_clicked), NULL);
g_signal_connect ((gpointer) radiobutton4, "toggled",G_CALLBACK (on_radiobutton4_toggled), (gpointer) g_window);
g_signal_connect ((gpointer) radiobutton9, "toggled",G_CALLBACK (on_radiobutton9_toggled), (gpointer) g_window);
g_signal_connect ((gpointer) radiobutton20, "toggled",G_CALLBACK (on_radiobutton20_toggled),(gpointer) g_window);
g_signal_connect(GTK_OBJECT(g_window),"key_press_event",GTK_SIGNAL_FUNC(on_dotselet_press_event),NULL);
gtk_builder_connect_signals(g_builder, NULL);
gtk_widget_show_all(g_window);
调试的时候在第二句就开始出现提示的错误，其中的g_builder是全局变量，由 g_builder = gtk_builder_new();
gtk_builder_add_from_file(g_builder, GLADE_FILE_LANG, NULL);
获得，但是g_signal_connect函数中的参数本身都没有问题，但是为什么会有上面的错误呢？麻烦您指导下！谢谢！