How To Overriding Initial Setting on Print Setup Dialog

MORE INFORMATION

The DEVMODE data structure contains information about the device initialization and environment of a printer. Changing the Print Setup Dialog settings involves modifying this structure. The hDevMode structure that you need to modify is a CWinApp member variable. The function that initializes this variable is CWinApp::UpdatePrinterSelection. To set the initial page orientation to DMORIENT_LANDSCAPE, you'll need to override this function, clone the base class code and make a modification similar to the following:

   extern void AFXAPI AfxGlobalFree(HGLOBAL hGlobal); // 4.1 or later

   void CMyApp::UpdatePrinterSelection(BOOL bForceDefaults)
   {
      if (!bForceDefaults && m_hDevNames != NULL)
      {
         CWinApp::UpdatePrinterSelection(bForceDefaults);
      }
      else
      {
         // First time or Forced -- Get defaults
         CPrintDialog pd(TRUE);
         pd.GetDefaults();

         if (m_hDevMode != NULL)
            ::GlobalFree(m_hDevMode);
            // AfxGlobalFree for 4.1 or later
         if (m_hDevNames != NULL)
            ::GlobalFree(m_hDevNames);
            // AfxGlobalFree for 4.1 or later

         m_hDevMode = pd.m_pd.hDevMode;
         m_hDevNames = pd.m_pd.hDevNames;

         // new code to set DMORIENT_LANDSCAPE
         LPDEVMODE lp = (LPDEVMODE) ::GlobalLock(m_hDevMode);
         ASSERT(lp);
         lp->dmOrientation = DMORIENT_LANDSCAPE;
         ::GlobalUnlock(m_hDevMode);
      }
   }
				

Unfortunately, this is not a virtual function, so you'll need to override all the functions in its call tree in the three cases below:

   (CMyApp::UpdatePrinterSelection)
   CWinApp::GetPrinterDeviceDefaults
     Non-virtual, copy from MFC src
   CView::DoPreparePrinting (non-virtual)
     Non-virtual, copy from MFC src, change CWinApp* to CMyApp* in code,
     include "docobj.h"
   CView::OnPreparePrinting
     Virtual, must override anyway
   CView::OnFilePrint
     Use ClassWizard

   (CMyApp::UpdatePrinterSelection)
   CWinApp::DoPrintDialog
     Non-virtual, copy from MFC src, include "cderr.h"
   CView::DoPreparePrinting
     Non-virtual, see above

   (CMyApp::UpdatePrinterSelection)
   CWinApp::DoPrintDialog
     Non-virtual, see above
   CWinApp::OnFilePrintSetup
     Use ClassWizard
				

For the non-virtual functions, just clone the base class code.

This example works for dmOrientation, dmPaperSize and other DEVMODE values that can be set by your program.