_Headers : invalid property value C++ FMX (win32 only)

[Ludo]

Hello support,

i encounter the same issue.. only when i build as a win32 fmx application.

reproduce :
- Create a new multiplatform application c++
- build and run successful
- drop a teegrid component (1.17) on the form
- build/run gives the error TeeGrid1 ._Headers:invalid property value.

- switch to 64bit
- build and run successful

- switch back to 32bit
- build/run gives the error TeeGrid1 ._Headers:invalid property value.

- open form as text and remove the _Headers section
- save file
- close file and do not open the designer
- build and run successful

- open form
- open designer and move the teeGrid
- save the change
- build/run gives the error TeeGrid1._Headers:invalid property value.


My applications consists of many lists where the teegrid is used. normally i make 64 bit applications only but for a project where i only have access to specific 32bit libraries i ported my bases forms to 32bit.. the workaround may work but is not workable and not maintainable..

Please investigate for a permanent sollution.

[Marc]

replied here:

https://www.steema.com/support/viewtopi ... 253#p81117

[Ludo]

installed rad studio 12.2 with patch 2 RAD Studio 12 Version 29.0.53982.0329

and version 1.17 of teegrid.

unfortunately the same result.. so the issue does not seem to be fixed with the newest version of RadStudio and the latest teegrid

any thoughts how to fix ?
i use FMX not VCL

[Marc]

Hello,

Yes, the error has appeared again for the latest C++ Windows x64 but works fine with modern C++ Windows x64. We'll take another look. Embarcadero recommends the use of modern.

20250311_TeeGrid117_RS12.jpg (263 KiB) Viewed 14480 times

Regards,
Marc

[Ludo]

The issue lies with 32bit only..

so even if modern is the way to go.. (i agree) this is not the focus. for now all implementations i have work properly for WIN64 but not WIN32... i only require the 32bit to work (i would be open to try a development version and provide feedback on my findings)

i have no trouble with the x64 bit (our production is still running c++ 12.0 with teegrid 1.17) but i am testing the working on a seperate system with 12.2 and teegrid 1.17.. for 32bit this failed.. 64bit worked.

[Marc]

Hello,

This issue has been a moving target, resulting with correct functioning for certain RAD Studio 12 patch releases. As you point out, it only affects C++ projects. We are checking this now with RAD Studio update 3.

For your purposes, it may be acceptable to you (?) to disable the _Headers property from being saved to the Form at designtime. If you do that (as described below) old projects will report a TeeGrid error on first opening, but ignoring it will continue and any small change to the form, re-saving it, will resave the TeeGrid to the form without the 'offending' property.

The workaround is to comment Filer.DefineProperty('_Headers' in the TeeGrid.pas file and to rerun the TeeGridRecompile installer, to rebuild and re-install the modified source to RAD Studio:

ie.

Code: Select all

procedure TCustomTeeGrid.DefineProperties(Filer: TFiler);

  function CanPersistData:Boolean;
  begin
    result:=(FData<>nil) and TDataAccess(FData).Streamable;
  end;

begin
  inherited;

  Filer.DefineProperty('_Data',ReadData,WriteData,CanPersistData);
  Filer.DefineProperty('_Footer',ReadFooter,WriteFooter,Footer.Count>0);
  //Filer.DefineProperty('_Headers',ReadHeaders,WriteHeaders,Headers.Count>0);
end;

TeeGrid will no longer save a designtime set Header for runtime, but that is easily solved by adding the header by code.

I hope that may allow you to move forward. We will report back on findings with RAD Studio 12.3.

Regards,
Marc