There should be a key on the Frame in the device section to manually reveal the OSK.
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There should be a key on the Frame in the device section to manually reveal the OSK, [http://gitorious.org/maliit/maliit-framework/blobs/master/maliit-glib/maliitinputmethod.h#line71 Maliit-glibe API "maliit_input_method_show"].