🚀 go-pugleaf

Hello everybody !

I have a problem with OWL and transfer to/from Comboboxes in a dialog.
I try to display a combobox in a dialog and fill it with information
but somehow the Gods aren't with me. I'm running BC++ v3.1 with OWL.



The code looks like this:


struct TMyTransferStruct {
  ...
  PTComboBoxData pcbxdata;
  ...
};


class TMyWindow : public TWindow
{
  ...
  TMyTransferStruct MyTransferStruct;
  ...
};


TMyWindow::DoTheBox()
{
  MyTransferStruct.pcbxdata = new TComboBoxData();

// Fill the list
  MyTransferStruct.pcbxdata->AddString("bla bla");
  ...

// Create the dialog and it's components
  PTDialog MyDialog = new TDialog(this, ID_MYDIALOG);
  ...
  new TComboBox(MyDialog, ID_MYCOMBOBOX);
  ...

// Set the TransferBuffer to my transferstruct
  MyDialog->SetTransferBuffer(&MyTransferStruct);

// Do the dialog
  if ( GetApplication()->ExecDialog(MyDialog) == MB_OK ) {
    strcpy(answer, MyTransferStruct.pcbxdata->Selection);
    ...
  }

// problem statement
  delete MyTransferStruct.pcbxdata;
}


Because I create a TComboBoxData with new, I must delete it
afterwards. But if I do this, everything crashes the second time I run
DoTheBox(), and if I omit the delete statement everything works fine
for maybe 10 or 20 times then it crashes (probably because more and
memory is taken by the TComboBoxData:s).

The manual is not very informative about transfering and especially
not to/from comboboxes. Am I doing this totally backwards ?

From what I believe (not that I havn't studied the manuals), manages
the ExecDialog() the deletion of the dialogbox and it's children when
the routine is finished.

I'd sure appriciate some help on this subject, or some other solutions
on how to get your transfer to/from dialog boxes to work. 


/Martin

--
--------
Martin Hagelin
hagelin@elixir.e.kth.se