Added creation of printer DC to printer factory.

Added wxPrintData ctor to wxGnomePrintDC.
Added wxGnomePrintPreview.


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42345 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/prntbase.h

@@ -77,6 +77,8 @@ public:
     virtual wxPageSetupDialogBase *CreatePageSetupDialog( wxWindow *parent,
                                                           wxPageSetupDialogData * data = NULL ) = 0;
 
+    virtual wxDC* CreatePrinterDC( const wxPrintData& data ) = 0;
+
     // What to do and what to show in the wxPrintDialog
     // a) Use the generic print setup dialog or a native one?
     virtual bool HasPrintSetupDialog() = 0;
@@ -119,6 +121,8 @@ public:
     virtual wxPageSetupDialogBase *CreatePageSetupDialog( wxWindow *parent,
                                                           wxPageSetupDialogData * data = NULL );
 
+    virtual wxDC* CreatePrinterDC( const wxPrintData& data );
+
     virtual bool HasPrintSetupDialog();
     virtual wxDialog *CreatePrintSetupDialog( wxWindow *parent, wxPrintData *data );
     virtual bool HasOwnPrintToFile();