Hello Neil!

Replying to a message of Neil Heller to All:

 NH> I needed a print dialog box in an application I was writing.  The 
 NH> documentation said:

 NH> "After calling DoModal(), GetDefaults() or GetPrinterDC() a printer DC 
 NH> will be returned in m_pd.hDC.  This DC must be freed by the caller of 
 NH> CPrintDialog."

 NH> Given the following code:

 NH>    pprtdlg = new CPrintDialog(false);


 NH>    if (pprtdlg->DoModal() == IDOK)
 NH>       pcdc->Attach(pprtdlg->GetPrinterDC());

 NH>    delete(pprtdlg->m_pd.hDC); <-------- offending line
 NH>    delete pprtdlg;

 NH> Does anyone have an idea of why the offending line causes a GPF?

It may not have been allocated with new, but with malloc.  When the docs
say "must be freed", they may have meant "free()'d".

Darin
C_PLUSPLUS moderator
dmcbride{at}tower.to.org

---