The goal of this howto is to explain how to create a filter for chalk 2) using Qt/Designer for the ConfigurationWidget Just copy the following in a file named (for instance) myfiltercw.ui : Form1 kisFilterConfigurationWidget1 0 0 359 251 kisFilterConfigurationWidget1 And then open Qt/Designer NOTE: it would be nicer if I knew how to copy (using autoconf/automake) this file in $(QTDIR)/tools/designer/templates