c - 错误 : ‘parent_window’ undeclared

Question

我在用 C 语言编译程序时遇到问题。我想使用以下代码运行简单的文件选择器:

#include <gtk/gtk.h>

int main( int argc, char *argv[])
{
  GtkWidget *dialog;

  gtk_init(&argc, &argv);

  dialog = gtk_file_chooser_dialog_new ("Open File",parent_window,action,_("_Cancel"),GTK_RESPONSE_CANCEL,_("_Open"),GTK_RESPONSE_ACCEPT,NULL);                   

 if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT)
  {
    char *filename;
    GtkFileChooser *chooser = GTK_FILE_CHOOSER (dialog);
    filename = gtk_file_chooser_get_filename (chooser);
    open_file (filename);
    g_free (filename);
  }

  gtk_widget_destroy (dialog);

  gtk_main();

  return 0;
}

我使用该命令编译它:

gcc -o s5 s5.c `pkg-config --libs --cflags gtk+-3.0`

我得到了错误:

s5.c:10:39: error: ‘parent_window’ undeclared (first use in this function)
                                       parent_window,
                                       ^
s5.c:10:39: note: each undeclared identifier is reported only once for each function it appears in
s5.c:11:39: error: ‘action’ undeclared (first use in this function)
                                       action,
                                       ^
s5.c:16:39: warning: passing argument 4 of ‘gtk_file_chooser_dialog_new’ makes pointer from integer without a cast [enabled by default]
                                       NULL);
                                       ^
In file included from /usr/include/gtk-3.0/gtk/gtk.h:99:0,
                 from s5.c:1:
/usr/include/gtk-3.0/gtk/gtkfilechooserdialog.h:63:12: note: expected ‘const gchar *’ but argument is of type ‘int’
 GtkWidget *gtk_file_chooser_dialog_new              (const gchar          *title,
            ^

我尝试用 GTK+ 2 做同样的事情，但也遇到了同样的错误；/

Answer 1

对于那些想要从 gtk+ 示例运行文件选择的人来说，这是答案:

#include <gtk/gtk.h>

int main( int argc, char *argv[]){

    //dialog variable
    GtkWidget *dialog;    

    gtk_init(&argc, &argv);

    //Define dialog
    dialog = gtk_file_chooser_dialog_new ("Open File",NULL,GTK_FILE_CHOOSER_ACTION_OPEN,GTK_STOCK_CANCEL,GTK_RESPONSE_CANCEL,GTK_STOCK_OPEN,GTK_RESPONSE_ACCEPT,NULL);

    //If file was choosen                 
    if (gtk_dialog_run (GTK_DIALOG (dialog)) == GTK_RESPONSE_ACCEPT){
        char *filename;
        filename = gtk_file_chooser_get_filename (GTK_FILE_CHOOSER (dialog));   
        printf("Selected file: %s\n", filename);
    } else {
        gtk_widget_destroy (dialog);
        return 0;
    }


    gtk_main();  
}

要编译你需要使用的命令:

gcc -o s6 s6.c `pkg-config --libs --cflags gtk+-2.0`