Glade-GTK + C語言：如何使用FileChooserButton獲取文件名？

我是新來這個空地事情（也來這個論壇），並想知道是否有你們的可以幫助我：Glade-GTK + C語言：如何使用FileChooserButton獲取文件名？

我得從chooserbutton用戶選擇的文件名和發送它作爲一個函數的字符串。不幸的是，我一直在收到這個惱人的錯誤：

Gtk-CRITICAL **: IA__gtk_file_chooser_get_uri: assertion `GTK_IS_FILE_CHOOSER (chooser)' failed

我認爲這是由於小部件的錯誤使用。有人能幫我弄清楚嗎？源代碼如下，如您所見，它來自於在https://live.gnome.org/Glade/Tutorials上發現的Glade-GTK教程。

該程序是一個簡單的2按鈕窗口：第一個按鈕是filechooserbutton，第二個是單擊時調用「clica」功能的標準按鈕。它應該顯示用戶通過文件選擇器按鈕選擇的文件名，但這是錯誤發生的時候。

測試源（只是爲了弄清楚如何使用控件）：

#include <gtk/gtk.h> 

int 
main(int argc, 
     char **argv) 
{ 
    GtkBuilder *builder; 
    GtkWidget *window; 
    GError  *error = NULL; 

    /* Init GTK+ */ 
    gtk_init(&argc, &argv); 

    /* Create new GtkBuilder object */ 
    builder = gtk_builder_new(); 
    /* Load UI from file. If error occurs, report it and quit application. 
    * Replace "tut.glade" with your saved project. */ 
    if(! gtk_builder_add_from_file(builder, "tut.glade", &error)) 
    { 
     g_warning("%s", error->message); 
     g_free(error); 
     return(1); 
    } 

    /* Get main window pointer from UI */ 
    window = GTK_WIDGET(gtk_builder_get_object(builder, "window1")); 

    /* Connect signals */ 
    gtk_builder_connect_signals(builder, NULL); 

    /* Destroy builder, since we don't need it anymore */ 
    g_object_unref(G_OBJECT(builder)); 

    /* Show window. All other widgets are automatically shown by GtkBuilder */ 
    gtk_widget_show(window); 

    /* Start main loop */ 
    gtk_main(); 

    return(0); 
} 

void clica(GtkFileChooser *filechooserbutton1){//this button was inserted through Glade 
    char cNome[250]; 
     *cNome = gtk_file_chooser_get_uri(GTK_FILE_CHOOSER(filechooserbutton1)); 

     printf("\n%s", cNome); 

}

格萊德文件：

<?xml version="1.0" encoding="UTF-8"?> 
<interface> 
    <requires lib="gtk+" version="2.24"/> 
    <!-- interface-naming-policy project-wide --> 
    <object class="GtkWindow" id="window1"> 
    <property name="can_focus">False</property> 
    <child> 
     <object class="GtkHBox" id="hbox1"> 
     <property name="visible">True</property> 
     <property name="can_focus">False</property> 
     <child> 
      <object class="GtkFileChooserButton" id="filechooserbutton1"> 
      <property name="visible">True</property> 
      <property name="can_focus">False</property> 
      </object> 
      <packing> 
      <property name="expand">True</property> 
      <property name="fill">True</property> 
      <property name="position">0</property> 
      </packing> 
     </child> 
     <child> 
      <object class="GtkButton" id="button1"> 
      <property name="label" translatable="yes">button</property> 
      <property name="visible">True</property> 
      <property name="can_focus">True</property> 
      <property name="receives_default">True</property> 
      <property name="use_action_appearance">False</property> 
      <signal name="clicked" handler="clica" swapped="no"/> 
      </object> 
      <packing> 
      <property name="expand">True</property> 
      <property name="fill">True</property> 
      <property name="position">1</property> 
      </packing> 
     </child> 
     </object> 
    </child> 
    </object> 
</interface>

來源

2013-01-03 Cristiano Oliveira Gonçalves