gtk+中的窗口背景的设置问题

gyh0inging

长话短说，想实现一个gtk+中window背景图设置，昨天在本站中看到szjungle达人的帖子，回去试了试，发现有错误。部分源码及错误如下：

void
update_widget_bg(GtkWidget *widget, gchar *img_file)
{
        GtkStyle *style;
        GdkPixbuf *pixbuf;
        GdkPixmap *pixmap;

        gint width, height;
        
        pixbuf = gdk_pixbuf_new_from_file(img_file, NULL);

        width = gdk_pixbuf_get_width(pixbuf);
        height = gdk_pixbuf_get_height(pixbuf);

        pixmap = gdk_pixmap_new(NULL, width, height, 24);
        gdk_pixbuf_render_pixmap_and_mask(pixbuf, pixmap, NULL, 0);

        style = gtk_style_copy(GTK_WIDGET (widget)->style);

        if (style->bg_pixmap[GTK_STATE_NORMAL])
        {
                g_object_unref(style->bg_pixmap[GTK_STATE_NORMAL]);
        }
       
        1033行：style->bg_pixmap[GTK_STATE_NORMAL] = g_object_ref(pixmap);
        style->bg_pixmap[GTK_STATE_ACTIVE] = g_object_ref(pixmap);
        style->bg_pixmap[GTK_STATE_PRELIGHT] = g_object_ref(pixmap);
        style->bg_pixmap[GTK_STATE_SELECTED] = g_object_ref(pixmap);
        style->bg_pixmap[GTK_STATE_INSENSITIVE] = g_object_ref(pixmap);

        gtk_widget_set_style(GTK_WIDGET (widget), style);
        g_object_unref(style);
}

这个是szjungle的帖子留言，我在main函数中调用update_widget_bg((GTK_WIDGET)window,"/root/Desktop/jrtpSample/pic/denglejiemian.jpg");

发现有如下错误：
clientMain.cpp:1033: error: invalid conversion from ‘void*’ to ‘GdkPixmap*’
clientMain.cpp:1034: error: invalid conversion from ‘void*’ to ‘GdkPixmap*’
clientMain.cpp:1035: error: invalid conversion from ‘void*’ to ‘GdkPixmap*’
clientMain.cpp:1036: error: invalid conversion from ‘void*’ to ‘GdkPixmap*’
clientMain.cpp:1037: error: invalid conversion from ‘void*’ to ‘GdkPixmap*’

gyh0inging

各位达人，帮帮忙：）小弟在线等~

没人用过这个码？

atlantic.china

背景图，我写了一个是显示图片的，跟背景没区别吧
我那是把照片全屏显示，不过窗口大小你可以改