Bitmap from Pixmap

[Frank Uepping <Frank Uepping cityweb de>]

Hello,
i have created a `GdkPixmap' with `gdk_pixmap_new ()' and then i have
done some drawing on it with the `gdk_draw_xxx' functions.
Now i would create a `GdkBitmap' from it with a transparent color.
I need a function like

 `GdkBitmap *gdk_bitmap_create_from_pixmap (GdkWindow *,window,
                                            GdkColor *transparent_color,
                                            GdkPixmap *pixmap)'

Any help is welcome.

Frank Uepping