How to substitute CPrintDialogEx for CPrintDialog?

Gaute

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Mar 27, 2008, 5:19:43 PM3/27/08

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Before Vista the CPageSetupDialog had a button for printer selection:
http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=278409

I looked at Notepad in Vista and I think it uses the newer CPrintDialogEx
that let us switch printer without printing by using the Apply button in the
Print dialog.

I want to do the same in my application but it seems very hard to make MFC
use the newer CPrintDialogEx with the Apply button. I found this 4,5 year
old thread discussing this:
http://www.themssforum.com/MFC/substitute-CPrintDialogEx/

Is there a solution now? (I can use the latest MFC version if it helps)

Best regards from Gaute

Dan Bloomquist

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Mar 27, 2008, 6:03:15 PM3/27/08

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Like the link says, the MFC printing loop operates with the old dialog.
I have a global, BOOL DoPreparePrinting( CPrintInfo* pInfo ) that I can
call from from the view member. In pInfo->m_lpUserData I have a
CPrintDialogEx created on the heap. In this call I take care of
associating the data between the the new dialog and the old.

I'll post below. Where the dialog is run you can handle an 'apply -
cancel' and grab the new printer name.

Best, Dan.

BOOL DoPreparePrinting( CPrintInfo* pInfo )
{
ASSERT(pInfo != NULL);
ASSERT(pInfo->m_pPD != NULL);

if (pInfo->m_pPD->m_pd.nMinPage > pInfo->m_pPD->m_pd.nMaxPage)
pInfo->m_pPD->m_pd.nMaxPage = pInfo->m_pPD->m_pd.nMinPage;

CWinApp* pApp = AfxGetApp();

pInfo->m_pPD->m_pd.nFromPage = (WORD)pInfo->GetMinPage( );
pInfo->m_pPD->m_pd.nToPage = (WORD)pInfo->GetMaxPage( );

CPrintInfoEx* pExInfo= static_cast< CPrintInfoEx* >( pInfo->m_lpUserData );
ASSERT_VALID( pExInfo->pPrintDialog );

CPRINTDIALOGEX& dlg= *pExInfo->pPrintDialog;

dlg.m_hWndOwner= *AfxGetMainWnd( );
dlg.m_pdex.Flags|= PD_ALLPAGES | PD_HIDEPRINTTOFILE | PD_RETURNDC;
dlg.m_pdex.nCopies= 1;
dlg.m_pdex.nMinPage= (WORD)pInfo->GetMinPage( );
dlg.m_pdex.nMaxPage= (WORD)pInfo->GetMaxPage( );
dlg.m_pdex.lpPageRanges= &pExInfo->printRange.front( );
dlg.m_pdex.Flags&= ~( PD_NOPAGENUMS /*| PD_NOPAGENUMS*/ );
dlg.m_pdex.nMaxPageRanges= pExInfo->printRange.size( );

if( ! pInfo->m_bPreview )
{
INT_PTR response= dlg.DoModal( );
if( response != S_OK || dlg.m_pdex.dwResultAction != PD_RESULT_PRINT )
return FALSE; // do not print
}
else if( pInfo->m_pPD->m_pd.hDC == NULL )
{
// call CreatePrinterDC if DC was not created by above
HDC hDC= dlg.CreatePrinterDC( );
if( hDC == NULL )
return FALSE;
pInfo->m_pPD->m_pd.hDC= hDC;
}

ASSERT( dlg.m_pdex.hDC );
if( ! dlg.m_pdex.hDC )
return FALSE;

pInfo->m_pPD->m_pd.hDC= dlg.m_pdex.hDC;
pInfo->m_pPD->m_pd.nFromPage= (int)dlg.m_pdex.nMinPage;
pInfo->m_pPD->m_pd.nToPage= (int)dlg.m_pdex.nMaxPage;

pInfo->m_nNumPreviewPages = pApp->m_nNumPreviewPages;
VERIFY( pInfo->m_strPageDesc.LoadString(AFX_IDS_PREVIEWPAGEDESC ) );
return TRUE;
}

Gaute

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Mar 28, 2008, 6:13:57 AM3/28/08

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Thank you - this can be a good start.
Where and what do you assign to pInfo->m_lpUserData?

Best regards from Gaute

Dan Bloomquist

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Mar 28, 2008, 12:31:06 PM3/28/08

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Gaute wrote:
> Thank you - this can be a good start.
> Where and what do you assign to pInfo->m_lpUserData?

This is your member, anything you would like.

struct YourPrintStruct
{
//Your stuff
...
CPrintDialogEx* pPrintDialog;
//This is for the print range object for CPrintDialogEx
std::vector< PRINTPAGERANGE > printRange;

YourPrintStruct( )
...
,pPrintDialog( NULL )
{
printRange.resize( 64 );
}
~YourPrintStruct( )
{
if( pPrintDialog )
delete pPrintDialog;
}
};

And somewhere before you call that ::DoPreparePrinting:

YourPrintStruct* pInfoEx= new YourPrintStruct;
//check and set other stuff
pInfoEx->pPrintDialog=
new CPrintDialogEx( PD_HIDEPRINTTOFILE, this );

//if you have some other printer
SomeSetPrinterCall( ...
&pInfoEx->pPrintDialog->m_pdex.hDevMode,
&pInfoEx->pPrintDialog->m_pdex.hDevNames )

pInfo->m_lpUserData= pInfoEx;

...
It ends up becoming accessible through my print object. In
OnEndPrinting, delete it.

YourPrintStruct* pExInfo= pReport->GetPreviewExInfo( );
//or just cast pInfo->m_lpUserData
//Finish using it
delete pExInfo;

Best, Dan.

Gaute

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Mar 28, 2008, 3:06:09 PM3/28/08

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Thank you!

Dan Bloomquist

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Mar 28, 2008, 3:41:49 PM3/28/08

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Gaute wrote:
> Thank you!
>
>
Hay, your welcome! If you start using some of the MS printer examples,
note that some of there calls do:

Function( ..., hDevNames, hDevMode );

Drove me nuts because the problem is not obvious. Make them all conform.

Function( ..., hDevMode, hDevNames );

Best, Dan.