Invalid variant type conversion...

Comments

• AlexTZ

  March 2005 edited 1:39AM

  What Delphi version do you use?
• GRFrones

  March 2005 edited March 2005

  Delphi 6...
• AlexTZ

  March 2005 edited 1:39AM

  D6 MUST have upd1 and upd2 installed.
• GRFrones

  March 2005 edited 1:39AM

  Ok... I'll install it... Thank you very much!
  
  Regards,
  Gabriel Frones
• GRFrones

  March 2005 edited 1:39AM

  Alex, I installed Delphi update pack 1 and 2, but it still don't works...
  
  A fragment of my code should help?
  
  regards.
• GRFrones

  March 2005 edited 1:39AM

  More details: I could add and use the function AnsiReplaceStr, but on the code I wrote, the error still happening...
  
  I make some tests, and the error appears to happens only with variables sent by Delphi or already existing on the Report.Variables... There are any diferences on the Reading of procedure's variables and the report's variables?
  
  regards.
• GRFrones

  March 2005 edited 1:39AM

  One more thing:

  Var wI : Integer;
      wAux : String;
  begin
      wAux := <wCliSpaces>;
      While Length( wAux ) < 12 Do
          wAux := '0' + wAux;
      MemoCli.Memo.Clear;
      MemoCli.Memo.Add( 'A' );
      For wI := 1 To StrToInt( Copy( wAux, 1, 2 ) )  Do
          MemoCli.Memo.Add( ' ' );
  

  
  It shows the error "Invalid variant type conversion", but if I remove the two last lines, there are no errors... Why is FastReport Trying to convert Variant, if everything is already on the necessary types?
  
  regards.
• GRFrones

  March 2005 edited 1:39AM

  Making some tests and looking for COPY function on FastScript source, I think I found a bug...
  
  Try to convert the string '0012' to variant and back to string... It will return '12'... Using the Copy function on FastScript (that converts to Variant), if you do a Copy( var, 1, 2 ), the expected result is '00', but it will return '12', theorically... I couldn't make it works, yet...
  
  regards.
• GRFrones

  March 2005 edited 1:39AM

  I solved that problem... I wrote the code on Delphi...
  
  Now I wonder.... For what does FastReports have a Script if it's VERY hard to use a variable?
  
  regards.
• djangman

  March 2005 edited 1:39AM

  I haven't tried working with FastScript much but I have had challenges when I have worked with it. Mostly my problems revolve around variant type conversions like you're finding.
  
  If FastScript wasn't a product they sold then I'd suggest using PascalScript which is much closer to Delphi than FastScript is.
• GRFrones

  March 2005 edited 1:39AM

  By the way, where can I find this PascalScript you talked?
  
  regards.
• AlexTZ

  March 2005 edited 1:39AM

  As I said before Delphi6 must have two updates installed, in other case you'll get Invalid Variant Conversion errors when running some scripts. To check if updates was installed correctly, run Delphi and make File|New application and compile it. Size of the exe file should be 384000 bytes. If it is not, you haven't installed the updates correctly.
• AlexTZ

  March 2005 edited 1:39AM

  GRFrones wrote:

  Making some tests and looking for COPY function on FastScript source, I think I found a bug...
  
  Try to convert the string '0012' to variant and back to string... It will return '12'... Using the Copy function on FastScript (that converts to Variant), if you do a Copy( var, 1, 2 ), the expected result is '00', but it will return '12', theorically... I couldn't make it works, yet...
  
  regards.

  The script

  var
    s: String;
    v: Variant;
  begin
    s := '0012';
    v := s;
    s := v;
    ShowMessage(Copy(s, 1, 2));
  end.
  

  
  works well for me - prints 00.
• GRFrones

  March 2005 edited 1:39AM

  I followed the steps, but the size is incorrectly... Clicking in my Help >> About, it shows Version 6.0 (Build 6.240) Update Pack 2...
  
  If there's something wrong, how can I correct? Can I uninstall and reinstall the Update packs?
  
  Thank you very much, Alex!
  
  regards.
• AlexTZ

  March 2005 edited 1:39AM

  Probably you did not install upd1. The best way is to uninstall Delphi and install it again, then install upd1, then upd2.
• GRFrones

  April 2005 edited April 2005

  Hi... Here I am again... I recently installed the RTL update 3, and the size of the executable was exactly 384Kb (393,216 bytes)... Is it really wrong?
  
  Thank you very much!
  
  regars.