really basic question. how to use the checkbox?

Comments

• boakoms

  March 2018 edited March 2018

  Hello,
  
  You dont have to check the Checkbox manually. Try to use Checkbox's Dataset and Datafield option in Checkbox properties or from code section like :
  
  Checkbox1.DataSet
  Checkbox1.DataField
  
  
  and use report start event from tfrxreport.
  
  Pictures attached.
  
  Regards,
  boakoms.
  

  kccheng wrote: »

  Hello,
  Sorry but I am new to fast report.
  
  I have a firebird3 query with IBX and some boolean fields. the database recognize the boolean type and display checkbox correctly.
  
  in my report, the text fields are print fine but the checkbox are always empty. I have tried to use the OnBeforePrint event to force the value to true, but it is still blank
  
  what can go wrong?
  
  procedure CheckBox1OnBeforePrint(Sender: TfrxComponent);
  begin
  Checkbox1.Checked:=true;
  end;
  
  Thanks.

  event.jpg 20.3K

  chckbx.png 9.3K
• kccheng

  April 2018 edited 3:34PM

  Thanks for your information.
  But I found the problem. in CheckStyle, only csLineCross and csPlus are actually printing. csCheck and csCross are printing as empty.
  I am using Lazarus, maybe it is a bug.
• kccheng

  April 2018 edited 3:34PM

  please check the attachment. 4 different checkbox with 4 different checkstyle.
  only csLineCross and csPlus is printing.

  checkbox_settings.png 7.3K
• kccheng

  April 2018 edited 3:34PM

  I found the problem.
  
  I changed variable S to widestring and use TextOut() instead of ExtTextOut() to draw for both checked and unchecked handler.
  
  The API ExtTextOut() doesn't support unicode. The value 251 and 252 is above 0x7F and they conflicts with DBCS. I don't know how to access ExtTextOutW() in Lazarus so I replaced it with TextOut() instead.
  
  the code is in frxChBox.pas, function procedure TfrxCheckBoxView.DrawCheck(ARect: TRect);