界面设计器:找不到信号处理程序

Glade Interface Designer: could not find signal handler

本文关键字：信号处理 程序 找不到 界面设计      更新时间：2023-10-16

我是GTK的新手。我在使用Glade Interface Designer设计UI时遇到了这样的问题。我的目的是设计两个窗口。main_window中的一个按钮控制create_log_in_window的外观。我在Glade中添加了函数"create_log_in_window"和对象"main_window"。但是，当我运行程序时，按钮无效。这样的警告正在出现。以下是代码和警告:

Gtk-WARNING:无法在create_log_in_window中找到信号处理程序

#include <gtk/gtk.h>
int main (int argc, char *argv[]){
    GtkBuilder      *builder;
    GtkWidget       *main_window;
    gtk_init (&argc, &argv);
    builder = gtk_builder_new();
    gtk_builder_add_from_file(builder,"main_window.glade", NULL);
    main_window = GTK_WIDGET(gtk_builder_get_object(builder, "main_window"));
    gtk_builder_connect_signals(builder, NULL);
    g_object_unref(G_OBJECT(builder));
    gtk_widget_show_all(main_window);
    gtk_main();
    return 0;
}

gboolean create_log_in_window(GtkWidget *main_window){
    GtkBuilder *builder;
    GtkWidget  *window;
    gtk_widget_hide_all(main_window);
    builder = gtk_builder_new();
    gtk_builder_add_from_file(builder,"log_in_window.glade",NULL);
    window = GTK_WIDGET(gtk_builder_get_object(builder,"log_in_window"));
    gtk_builder_connect_signals(builder,NULL);
    g_object_unref(G_OBJECT(builder));
    gtk_widget_show_all(window);
    return true;
}

我参考了很多信息，最后在这个网站找到了一些有用的东西:http://blog.csdn.net/xuesen_lin/article/details/6001114关键是我们应该以一种特殊的方式定义函数，以便让板找到函数地址。也许我的描述不清楚。我将展示我的代码。

#include <gtk/gtk.h>
typedef struct _MainDate{
    GtkWidget *main_window;
    GtkWidget *delete_button;
}MainDate;

G_MODULE_EXPORT void delete_confirm_window( GtkButton *button, GtkWidget *popup ){
    GtkBuilder *builder;
    GtkWidget  *delete_window;
    GError *error = NULL;
    builder = gtk_builder_new();
    if(!(gtk_builder_add_from_file(builder,"delete_window.glade",&error))){
        g_warning("%s",error->message);
        g_free(error);
        return ;
    }
    delete_window = GTK_WIDGET(gtk_builder_get_object(builder,"delete_confirm_window"));
    gtk_builder_connect_signals(builder,NULL);
    g_object_unref(builder);
    gtk_widget_show(delete_window);
}
int main(int argc,char *argv[]){
    GtkBuilder *builder;
    MainDate *date;
    GError  *error = NULL;
    gtk_init(&argc,&argv);
    builder = gtk_builder_new();
    if(!(gtk_builder_add_from_file(builder,"main_window.glade",&error))){
        g_warning("%s",error->message);
        g_free(error);
        return 1;
    }
    date = g_slice_new(MainDate);
    date->main_window =      GTK_WIDGET(gtk_builder_get_object(builder,"main_window"));
    date->delete_button = GTK_WIDGET(gtk_builder_get_object(builder,"delete_popmenu"));
    gtk_builder_connect_signals(builder,date);
    g_object_unref(builder);
    gtk_widget_show_all(date->main_window);
    gtk_main();
    g_slice_free(MainDate,date);
    return 0;
}
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