tstringgrid

This is a follow up to my previous question Delphi TStringGrid multi select, determining selected rows regarding Delphi String Grids. It's a different question. I was looking more closely at the ONSelectCell Event TSelectCellEvent = procedure (Sender: TObject; ACol, ARow: Longint; var CanSelect: Boolean) of object; I noticed that the TStringGrid.Selection.Top,Bottom properties are not necessarily accurate (within the event itself). Basically, if someone goes from selecting multiple rows to just one row, the selection.* properties do not get updated, whereas if one selects multiple rows, they

I have a TDataSource that is backed by a TClientDataset bound to a TStringGrid . I did this by right-clicking on the grid, selecting " Link to DB Datasource... ", and selecting the DataSource. This setup the LiveBindings for me. When I run the application, the grid only fills with 200 rows, even though there are 5000 records in the dataset. I'm unable to find any documentation regarding how to change the number of rows displayed or the proper way to allow the user to scroll through all of the data. I did find the hard coded 200 value in TBindScopeDBEnumerator.Create in the unit Data.Bind

InvalidateRow and InvalidateColum are not working for TStringGrid. The methods will not invalidate the entire Row/Col. InvalidateGrid always works (so this could be a dirty work-arround until the cause of the bug is found). In some circumstances (it seems to be random) InvalidateRow and InvalidateColum seem to work also. Update: I have found which circumstances will trigger the bug: the grid must be larger than the visible area and the position is outside of the view. Any ideas? Delphi 7, Win 7 32 bits "SOLVED" (Delphi VCL bug) I have found that this bug exists since Delphi 1: http://qc

I want to put a TCheckBox inside a TStringGrid in Delphi in every cell of certain column. I'm using Delphi XE. You should draw your own checkboxes, preferably using visual themes, if enabled. This is a simple sketch of how to do that: const Checked: array[1..4] of boolean = (false, true, false, true); procedure TForm4.StringGrid1DrawCell(Sender: TObject; ACol, ARow: Integer; Rect: TRect; State: TGridDrawState); const PADDING = 4; var h: HTHEME; s: TSize; r: TRect; begin if (ACol = 2) and (ARow >= 1) then begin FillRect(StringGrid1.Canvas.Handle, Rect, GetStockObject(WHITE_BRUSH)); s.cx :=

I am adding multiple rows to a string grid from a CSV file @ runtime, However the StringGrid seems to flicker lots when it is being upadated, I presumed there would be a beginupadate / Endupdate command to stop this. However I cannot find it. Is there another way to stop the flicker when the grid id being updated. Colin roumen Better late than never... I use WM_SETREDRAW . For example: ... StringGrid1.Perform(WM_SETREDRAW, 0, 0); try // StringGrid1 is populated with the data here finally StringGrid1.Perform(WM_SETREDRAW, 1, 0); StringGrid1.Invalidate; // important! to force repaint after all