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[solved] TDateTimePicker - bug in Lazarus?


I was told to upload anything in this forum, what I think it may be a bug.
I am relatively new to Lazaus, so I am insecure

So I upload
- a project simplified
- the lazarus.log
- the text below:

Do this:
- start the program
- go to the last Tab "neu"
- focus your attention on the DateTimePicker
- select the second RadioButton
- the DateTimePicker is gone

I suspect it may have something to do with

These were the items, I worked with in the recent hours

(attachemend deleted)

Hi Nicole,

I was not able to load and compile your demo program.

unit_notizen.pas(15,21) Fatal: Kann Unit_myStringList nicht finden verwendet von unit_Notizen des Projektinspektors.

Hi Nicole,

if you inspect your radio button click event:

--- Code: Pascal  [+][-]window.onload = function(){var x1 = document.getElementById("main_content_section"); if (x1) { var x = document.getElementsByClassName("geshi");for (var i = 0; i < x.length; i++) { x[i].style.maxHeight='none'; x[i].style.height = Math.min(x[i].clientHeight+15,306)+'px'; x[i].style.resize = "vertical";}};} ---procedure TForm_Notizen.RadioGroup_TerminNeuClick(Sender: TObject);begin    DateTimePicker_TerminEintrag.Visible:=false;     if RadioGroup_TerminNeu.ItemIndex=0 then      Panel_TeminNeuUHilfe.Color:=Farbe_Typ0;   if RadioGroup_TerminNeu.ItemIndex=1 then      Panel_TeminNeuUHilfe.Color:=Farbe_Typ1;   if RadioGroup_TerminNeu.ItemIndex=2 then      Panel_TeminNeuUHilfe.Color:=Farbe_Typ2;   if RadioGroup_TerminNeu.ItemIndex=3 then      Panel_TeminNeuUHilfe.Color:=Farbe_Typ3;    if (RadioGroup_TerminNeu.ItemIndex=4) then begin      DateTimePicker_TerminEintrag.Visible:=true;      Panel_TeminNeuUHilfe.Color:=Farbe_Typ4;   end;    if (RadioGroup_TerminNeu.ItemIndex=5) then begin      DateTimePicker_TerminEintrag.Visible:=true;      Panel_TeminNeuUHilfe.Color:=Farbe_Typ4;   end;     if RadioGroup_TerminNeu.ItemIndex=6 then      Panel_TeminNeuUHilfe.Color:=Farbe_Typ6;    if RadioGroup_TerminNeu.ItemIndex=7 then      Panel_TeminNeuUHilfe.Color:=Farbe_Typ7;     if RadioGroup_TerminNeu.ItemIndex=8 then          Panel_TeminNeuUHilfe.Color:=Farbe_Typ8;      if RadioGroup_TerminNeu.ItemIndex=9 then          Panel_TeminNeuUHilfe.Color:=Farbe_Typ9; end;           
in the very first step you hide the dateTimePicker_TerminEintrag
and then you set the visibility to TRUE, only when
RadioGroup_TerminNeu.ItemIndex is 4 or 5.

If you click the second radiobutton, then the visibilty of the DataTimepicker will never change.

Thank you so much!!
This is the silly mistake: I had two pickers, one for time-kind and one for date-kind (my old Delphi did not allow both).
The time-kind I hid when not needed.

A rename action left the name of the time-kind instead of the name of the date-kind-picker.
I needed somebody else to tell me the obvious.


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