On Wed, Dec 14, 2011 at 8:17 AM, <[email protected]> wrote: > > > On Wed, 14 Dec 2011, Ludo Brands wrote: > >>> >>> I've got your point. >>> >>> Mine is that the control should keep less intrusive as it was >>> designed >>> earlier (the original author explicitly avoided changing >>> listsource cursor). >>> >> >> Less intrusive became occulted. Not only are we missing an important (for >> me >> at least) Delphi feature but the current implementation makes it virtually >> impossible to emulate the Delphi behavior since everything related to the >> lookup is private: >> A convoluted workaround for DBLookupComboBox was to create a >> DBLookupComboBox.OnChange, retrieve DBLookupComboBox.ItemIndex and move >> its >> listsource to that position. Unfortunately, recent changes have made this >> even more difficult since DBLookupComboBox2.ListSource returns nil if >> Datafield is a lookup field. Setting ListSource when Datafield is ftLookup >> was superfluous but possible and useful. Beats me why this was removed. >> Progress? Now I have to get the field information of DataField to get to >> the >> ListSource : >> >> DBLookupComboBox.DataSource.DataSet.FieldByName(DBLookupComboBox.DataField). >> LookupDataSet.RecNo:=DBLookupComboBox.ItemIndex+1 :( I'll create a >> seperate >> bugreport for this regression. Even if ListSource isn't settable for a >> ftLookup Datafield, it shouldn't return nil. >> >> DBGrid is even worse. For the picklist I haven't found anything (event or >> property) to get to its index or value. >> >> The remedy for being less intrusive is worse than the disease. > > > I am totally in agreement with Ludo on this one. > > I think the users should at least be offered the opportunity to change the > behaviour. I have always counted on the Delphi-compatible behaviour: > selecting an element in a lookup positions the cursor in the lookup dataset. > > So a property 'SyncLookupCursor' or so should maybe be introduced. The > default can be 'False', but I for one would need the 'True'.
That is I said before... Marcos Douglas -- _______________________________________________ Lazarus mailing list [email protected] http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
