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                                Michael Forshaw 08.29.2008

                                  • In unit "cxGridCustomTableView.pas", class "TcxCustomGridTableViewStyles", there are various methods for returning style parameters, e.g.

                                    GetCellContentParams
                                    GetDataCellParams
                                    GetDataCellContentParams

                                    These are all virtual methods which I have successfully overridden in decendant classes.

                                    However, the method called "GetSelectionParams" is not virtual. Please can you considermaking it virtual?

                                    "GetDataCellParams" calls both "GetSelectionParams" and "GetDataCellContentParams". One is virtual the other is not. I have worked around this by overriding "GetDataCellParams" and duplicated your code but it would be good if you could make "GetSelectionParams" virtual in the future.

                                    Thanks.

                                0
                                Alex M (DevExpress) 09.02.2008

                                Hi,

                                Would you mind if we make this suggestion public, so that other customers could vote for it?

                                Thanks,
                                Alex

                                0
                                Michael Forshaw 09.02.2008

                                Hi Alex

                                Yes, that's fine.

                                Regards

                                Michael

                                0
                                Alex M (DevExpress) 09.03.2008

                                Michael, please clarify the task you're trying to accomplish by overriding the GetSelectionParams method. Making this method virtual is not a problem; however, due to its peculiarities first of all we'd like to examine your task to make certain that overriding the method is necessary.

                                Thanks,
                                Alex

                                0
                                Michael Forshaw 09.03.2008

                                Hi Alex

                                We introduced a new TableView event which indicates if a cell is enabled or not. Various factors can affect this at run-time. If a cell is NOT enabled, we change the colour of the cell to the disabled colour which indicates the cell cannot be edited.

                                This behaviour must override the built in styles.

                                Therefore, we override "GetDataCellContentParams" (and want to override "GetSelectionParams") to call our event and determine the enabled state before the style is set.

                                For example:

                                inherited;
                                AEnabled := <Call Event to determine enabled state based on ARecord and AItem)
                                if not AEnabled then AParams.Color := <UseDisabledColor>;

                                Regards

                                Michael

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