Stringgrid  - don't understand failure to update a cell
lazarus / 55-TAChart

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jbmckim · 2020-07-23 18:17

In the code below strTest updates correctly on the call to
...WvLengthSetting();.  However, the subsequent update of strTest,
(i.e. strTest :=
InputStringGrid.Cells[WAVELENGTH_COL,iWvLngthBeingSet]) returns the
value the cell contained prior to the attempted update.  (Insert
swearing emoji here.)

This is called from a timer but the grid is in the same Unit as the
timer.


Code: Pascal  [Select][+][-]window.onload = function(){var x1 =
document.getElementById("main_content_section"); if (x1) { var x =
document.getElementsByClassName("geshi");for (var i = 0; i procedure
TExitMainForm.WaveLengthBySpecTimerTimer(Sender: TObject);const 
WAVELENGTH_COL : integer = 8;var  strTest : string = ''; begin   if
(SpecWvLengthSetupForm.Visible = false) then   begin      strTest :=
 SpecList[iWvLngthBeingSet].WvLengthSetting();     
 InputStringGrid.Cells[WAVELENGTH_COL,iWvLngthBeingSet]              
       := SpecList[iWvLngthBeingSet].WvLengthSetting();      strTest
:= InputStringGrid.Cells[WAVELENGTH_COL,iWvLngthBeingSet];    
 iWvLngthBeingSet := -1;     WaveLengthBySpecTimer.Enabled := false; 
 end; end;

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Blaazen · 2020-07-23 18:37

Code looks fine.  Put breakpoints or writeln(); commands between lines
to see what actually is in cell and in strTest.