GTK + system(3)用线程调用

Question

我用GTK + -2.0开发了一个简单的应用程序.我的问题是如何在不冻结程序的情况下运行bash脚本(例如使用system(3))？我试图实现一个线程系统,但它没有奏效.

这是我的代码片段,我尽力简化.问候

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


    /* init threads */  
    g_thread_init(NULL);
    gdk_threads_init();
    gtk_init(&argc,&argv);

    window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    ...

    button = gtk_button_new_with_label("Format");
    g_signal_connect(button,"clicked",G_CALLBACK(callback),(gpointer)"button 1");
    gtk_table_attach_defaults (GTK_TABLE (table), button, 0, 1, 0, 1);
    gtk_widget_show(button);


        gdk_threads_enter();
    gtk_main();
    gdk_threads_leave();

    return 0;

}

/* Our callback.
* The data passed to this function is printed to stdout */
static void callback( GtkWidget *widget,
                  gpointer   data )
{
    int sTemp=0;
    GThread   *thread;
        GError    *error = NULL;
        g_print ("Hello again - %s was pressed\n", (char *) data);
        sTemp=ChecckIfFileExits("/dev/mmcblk0");
        if(sTemp)
        {
        gtk_label_set_text(GTK_LABEL(label),"Formatting");
        thread = g_thread_create( PFormatThrad, (gpointer)widget,
                          FALSE, &error );
        if( ! thread )
        {
            g_print( "Error: %s\n", error->message );

        }

    }
    else
    {
        g_print ("SD/MMC not found\n");
    }
}


static gpointer
PFormatThrad( gpointer data )
{

        sleep( 3 );

        gdk_threads_enter();

        system("./mkcard.txt /dev/mmcblk0");
    gtk_widget_set_sensitive(selectImageButton,TRUE);
    gtk_label_set_text(GTK_LABEL(label),"Format tamamland?\n?maj? Seçin");
        gdk_threads_leave();

    return( NULL );
}    

Answer 1

不要fork()直接打电话.

在GTK +应用程序中,最好使用glib的进程生成API:s.例如,g_spawn_async_with_pipes()如果要读取子进程的输出,则该函数非常方便.