Need some help with GetPrinterDevice

I would like to change the call to  GetPrinterDevice like this  
if (GetPrinterDevice(_T("7-PDF Printer"), &hDevNames, &hDevMode))

to a string, but this will not work
if (GetPrinterDevice (PDF_DRUCKER), &hDevNames, &hDevMode))


       CString str_PDF="7-PDF Printer";

        LPTSTR string = new TCHAR[str_PDF.GetLength()+1];
       if (GetPrinterDevice (PDF_DRUCKER), &hDevNames, &hDevMode))

please let me know
500 points with a solution.
Thank you.
Best regards,
Thomas StockbrueggerAsked:
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Hi tsp2002,

is this the real code you use? I ask because what's obviously wrong is the ')' after PDF_DRUCKER.

IMO this should work:
     CString str_PDF=_T( "7-PDF Printer" );

       if (GetPrinterDevice (str_PDF, &hDevNames, &hDevMode))

Open in new window

Hope that helps,

 if (GetPrinterDevice (str_PDF.GetBuffer(str_PDF.GetLength()+1), &hDevNames, &hDevMode))

Open in new window

should work.

CString has a built-in operator LPCTSTR which would turn the CString to a (const) pointer to TCHAR. but i assume the GetPrinterDevice uses a LPTSTR for first argument what is a non-const pointer to TCHAR. so you have to use the GetBuffer function.


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Thomas StockbrueggerAuthor Commented:
thank you, that was very fast
best regards,
Thomas StockbrueggerAuthor Commented:
This will work, and you have to use GetBuffer()

CString str_PDF=_T( "7-PDF Printer" );
if (GetPrinterDevice (str_PDF.GetBuffer(str_PDF.GetLength()+1), &hDevNames, &hDevMode))
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