FIX: Print Preview Doesn't Honor Font Width Setting

MORE INFORMATION

Steps to Reproduce Behavior

   void CFntWidthView::OnDraw(CDC* pDC)
   {
      pDC->SetMapMode(MM_LOENGLISH);

      LOGFONT lfFont;
      CFont fontNew, *fontOld;
      ZeroMemory(&lfFont, sizeof(lfFont));
      lstrcpy(lfFont.lfFaceName, "Arial");
      lfFont.lfWidth = 10;
      lfFont.lfHeight = 50;
      fontNew.CreateFontIndirect(&lfFont);

      fontOld = pDC->SelectObject(&fontNew);
      pDC->TextOut(0, -100, "Font Width lfWidth = 10.", 24);
      pDC->SelectObject(fontOld);
   }
				

Steps to Workaround

You can work around the problem only for projects statically linked to MFC. The workaround uses the linker /FORCE:MULTIPLE option to override MFC's version of CPreviewDC::MirrorFont with your corrected version. Follow the steps below to work around this problem:

1. Insert the following statements at the very end of one of your source files:

         #include "afxpriv.h"
         void AFXAPI AfxDeleteObject(HGDIOBJ* pObject);
   					

2. Locate MFC's CPreviewDC::MirrorFont function (in source file dcprev.cpp) and copy the entire function just after the statements listed above.
3. Make the following corrections to the function: Change:

   logFont.lfWidth = 0;

   To:

   logFont.lfWidth = tm.tmAveCharWidth;

4. From the Build menu, click Settings, and on the General tab, select "Use MFC in a static library" in the Microsoft Foundation Classes drop-down box.
5. Click the Project Settings Link tab. In the Category drop-down box, select Customize and make sure the "Force file output" option is set.
6. Rebuild your application. When you rebuild, you will get three warnings that can be ignored:

        LINK : warning LNK4075: ignoring /INCREMENTAL due to /FORCE
          specification
   						

        nafxcwd.lib(dcprev.obj) : warning LNK4006: "protected: void __thiscall
          CPreviewDC::MirrorFont(void)"(?MirrorFont@CPreviewDC@@IAEXXZ)
          already defined in FntWidthView.obj; second definition ignored
   						

        Debug/FntWidth.exe : warning LNK4088: image being generated due to
          /FORCE option; image may not run
   						

Now your application should behave correctly. The force option causes the linker to ignore MFC's version of the function and to use your function instead.

For dynamically linked projects, there are no good workarounds other than avoiding custom-width fonts.