On Monday 17 October 2016 17:20:03 Graeme Geldenhuys wrote: > On 2016-10-17 16:12, Martin Schreiber wrote: > > TWidgetGrid has a widget per column not per cell. > > Ah, good to know. Thanks for the whole explanation. > > > TStringGrid can not show icons by itself. > > Does MSEgui's TStringGrid have a OnDrawCell equivalent event handler?
Yes, there are T*Grid.DataCols[n].OnBeforeDrawCell and OnAfterDrawcell event properties. Widget columns also have OnDrawCell, I must check why it is missing in TStringCol. > That's what I used in fpGUI's StringGrid to paint the icon in a cell. I > see there is OnPaint, OnAfterPaint, OnBeforePaint etc. I guess I can use > OnPaint, and then query the StringGrid (Sender parameter) to find out > the focused row and column. One possible problem I see, in those event > handlers, is the ACanvas limited to the cell rectangle, or the whole > StringGrid canvas? > > I'll try and get the basics of Procedure List dialog working with a > plain StringGrid (I don't need icons to start). Then I'll rework it with > a TWidgetGrid. > Data access is different in TStringGrid and TWidgetGrid. In TWidgetGrid it happens via the column widget, <thecolumnwidget>.Value for the value of the active cell, <thecolumnwidget>.GridValue[n] for cell values, <thecolumnwidget>.GridValues for a dynamic array with the cell values of the whole column. GridData returns the instance of the TDataList descendant. 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 mseide-msegui-talk@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mseide-msegui-talk
