Port bmp-save widgets to use GimpProcedureDialog API
This patch attempts to complete the GimpProcedureDialog
port of BMP-Save.
It already used GimpProcedureConfig
, but still made direct calls to gimp_prop_* ()
to create the widgets. Now all widgets are created through the gimp_procedure_dialog_* ()
API.
Minor typos in the original descriptions were also fixed.