6 replies to this topic

[m610]

I am using a grid to display results as they come in over a serial or Ethernet port. Every so often the grid does not paint and on of the cells in a row, or some of the cells of the cells in the row, or only part of a cell may be painted. Either part or all of the cell is empty. It seems to happen when something else in the system interupt my program.

When I pass another form over the grid these cells do paint. Is there a way I can make sure the grid paints each row of cells after my program is done giving it the new values?

[Boki (Berg)]

Hi,

I am not sure that I understand a question. Can you please send me a small demo project to I test it.

Also, maybe calling RefreshCell may help?

Best regards

[m610]

Hi,

I am not sure that I understand a question. Can you please send me a small demo project to I test it.

Also, maybe calling RefreshCell may help?

Best regards

A demo might not be that easy, but here's the code I use to write to the grid:

CODE

  NextGrid1.AddRow(1);
  NextGrid1.Cell[0,NextGrid1.RowCount-1].AsString:=FormatDateTime('hh:mm:ss.zzz',T);
  NextGrid1.Cell[1,NextGrid1.RowCount-1].AsString:=FloatToStrF(deltaT0,ffFixed,6,3);
  NextGrid1.Cell[2,NextGrid1.RowCount-1].AsString:=FloatToStrF(deltaT1,ffFixed,6,3);
  NextGrid1.Cell[3,NextGrid1.RowCount-1].AsString:=FloatToStrF(deltaT2,ffFixed,6,3);
  NextGrid1.Cell[4,NextGrid1.RowCount-1].AsString:=FilterInput(S1);
  NextGrid1.Cell[5,NextGrid1.RowCount-1].AsString:=FilterInput(S2);
  NextGrid1.Cell[6,NextGrid1.RowCount-1].AsString:=FilterInput(S3);
  NextGrid1.Cell[7,NextGrid1.RowCount-1].AsInteger:=IValue;
  NextGrid1.Cell[8,NextGrid1.RowCount-1].AsString:=FloatToStrF(FValue,ffFixed,6,Fmt);
  NextGrid1.ScrollToRow(NextGrid1.LastAddedRow);

and attachment  CNi_03.jpg   465.66KB   8 downloads is a screen show showing what it looks like.

[Boki (Berg)]

Hi m610,

Your code looks fine, I am not sure how can I help. Can you tell me is cell refreshed when you move Form outside the screen and turn it back?

Best regards

[m610]

Hi m610,

Your code looks fine, I am not sure how can I help. Can you tell me is cell refreshed when you move Form outside the screen and turn it back?

Best regards

I haven't written any code to refresh cells, or even the form. Windows is probably handling all that.

[Boki (Berg)]

Hi m610,

I will like to know what happens if you manually refresh "empty" cells (for example move other window above). Does data is shown then?

Best regards

[m610]

Hi m610,

I will like to know what happens if you manually refresh "empty" cells (for example move other window above). Does data is shown then?

Best regards

Sorry for the delay in responding. Yes, the cells refresh when I pass another form over them.

The "Refresh" command fixed the problem. "RefreshRow" did not.

I noticed that this never happened until enough rows had been created for the ScrollRow command to start doing anything, but then again this doesn't happen that often and so waiting for that many rows to be created might not be long enough for the error to occur.