Placing a GdkBitmap into a GtkPixmap widget

[Arthur Jerijian <lightmanaj earthlink net>]

Hi all,

I am writing a test program which will display monochrome bitmaps inside a GTK+
window. I understand that in many cases, a GdkBitmap can be used instead of a
GdkPixmap in GTK+ function calls, since they are both drawables. However, when
I create a GtkPixmap widget using the following functions:

   test_bitmap = gdk_bitmap_create_from_data
    (
        gtkwindow -> window,
        preview_bits,  /* These next 3 parameters come from an XBM file. */
        preview_width,
        preview_height
    );
    
    test_bm_pixmap_widget = gtk_pixmap_new ((GdkPixmap *) test_bitmap, NULL);

I get the following error:

    Gdk-ERROR **: BadMatch (invalid parameter attributes)
      serial 1056 error_code 8 request_code 62 minor_code 0

Is the GtkPixmap widget compatible with GdkBitmap drawables? If not, then is
there a way to display a GdkBitmap drawable inside a GTK+ window?

Thanks,
--Arthur