On Friday 06 July 2018 12:26:52 mohamed hamza wrote: > The project contains a BaseForm with the following objects: > > > 1. Navigator, > 2. Datasource > > > > > And 2 Methods: (OnActivate, OnStateChange) > > > See the attachments. > > > all other forms are inherited from BaseForm. > > > I think that you can understand what I want to do? > > I often use a similar approach with common ancestors for edit and list forms. The base forms have a tdatasource with empty dataset property. An actual descendant edit or list form has the datasource.dataset property set to the wanted dataset, there is no need for code in OnActivate event. Most likely OnCreate or OnCreated or on OnEventLoopStart would be more appropriate anyway. See https://gitlab.com/mseide-msegui/mseuniverse/tree/master/tools/kicad/bom particularly as example https://gitlab.com/mseide-msegui/mseuniverse/blob/master/tools/kicad/bom/componenteditform.pas and its ancestor base form https://gitlab.com/mseide-msegui/mseuniverse/blob/master/tools/kicad/bom/recordeditform.pas which is used as base for several different record edit forms.
Martin ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ mseide-msegui-talk mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/mseide-msegui-talk
