[RESOLVED] Font Help

[sma]

I have an application that provides a preview of the RTF files it generates. The preview renders each page using combinations of the Times Roman and Courier New fonts with a size of 8 points.

Problem:
The size of the Courier New text is rendered larger than the Times Roman text which results in the text exceeding the page rectangle.

If I render everything in Times Roman at 8 point it matches the output from Word (My Output Reference) within a mm or so over the page length. If I render the data using Courier New I exceed the page length by 8 lines on the display.

Printing also produces a variation in text length but due to the higher printer resolution it is not as great.

I have looked at the values of the screen resolution using GetDeviceCaps(LOGPIXELSY) which returns the default 96 pixels per inch.

Using the GetDeviceCaps(VERTRES) and (VERTSIZE) I get a resolution of 91 or 76 depending on the display.

Using these resolutions improves reduces the height of the text but still not enough to achieve the required representation.

I've also tried CreateFontIndirect and CreatePointFont to see if this makes a difference which unfortunately it hasn't.

Can anyone provide some insight into a reliable method to correctly display Courier New fonts with the same accuracy as the other true type fonts.

[sma]

The two images that demonstrate my issue.


The first image contains the lower portion of two printed versions. The Top most is the output generated using Word. Whilst the lower most is the same page printed fropm my application. The bottom of the columns with repect to the footer (Issue xx...) shows the variation in text sizes between the two.

The second image shows the same page rendered by my application with the colum data extending below the page and over writing the footer.


As detailed in many references and guides, "the majority of time you will spend formating output when utilising the MFC SDI/MDI printing interfaces." For this project they sure have this right.

[Vanaj]

Can you post/email code you are using in GEtDeviceCaps() and CreateFont()...

[sma]

Below is the code used to determine the resolution of the Device used within my app.

int CalculateYPixels(CDC* DeviceContext)
{
    int VertRes = DeviceContext->GetDeviceCaps(VERTRES);
    int Height = DeviceContext->GetDeviceCaps(VERTSIZE);
    float PixelsInch = (((float)VertRes / (float)Height) * 25.4) + 0.5;

    if(PixelsInch > 300)
        PixelsInch = DeviceContext->GetDeviceCaps(LOGPIXELSY);

    return (int) PixelsInch;
}

The following is an extract of my code that shows how each font is created.

	memset(&WorkingLogFont, 0, sizeof(LOGFONT));
	DeviceContext->GetCurrentFont()->GetLogFont(&WorkingLogFont);

	WorkingLogFont.lfWidth = 0;
	WorkingLogFont.lfWeight = FW_NORMAL;
	WorkingLogFont.lfCharSet = ANSI_CHARSET;
	WorkingLogFont.lfOutPrecision = OUT_DEFAULT_PRECIS;
    WorkingLogFont.lfClipPrecision = CLIP_DEFAULT_PRECIS;
	WorkingLogFont.lfPitchAndFamily = FIXED_PITCH;

       lstrcpy(WorkingLogFont.lfFaceName, GetFontName(CellParaFont));

            WorkingLogFont.lfHeight = -MulDiv(GetFontSize(CellParaFont), PixelsInch, 72);

	if(WorkingFont->CreateFontIndirect(&WorkingLogFont))
	{
		OldFont = DeviceContext->SelectObject(WorkingFont);
	}

CellParaFont font is a CString which represents the font face name of either "Times Roman New" or "Courier New" and the size of the font as defined in the RTF V1.6 spec. Each of the routines using this data returns the correct values.

Stepping trough the code shows that all elements of the LogFont have been initialised with the expected values and the CreateFont indirect function return true indicating successful completion.

Using the GetTextFace funct shows that the Courier New font is being used with the TextOut function used to generate the text.

[Vanaj]

Looks close to what I use in my programs...

	pDC = GetDC();
	int iLogPixY = GetDeviceCaps(pDC->m_hDC, LOGPIXELSY);
	ReleaseDC(pDC);


	memset(&lf, 0, sizeof(LOGFONT));
	lf.lfHeight = -MulDiv(iDefFontSize, iLogPixY, 72);
	lf.lfWidth = 0;
	lf.lfItalic = 0;
	lf.lfWeight = FW_NORMAL;
	lf.lfOutPrecision = OUT_TT_PRECIS;
	lf.lfQuality = PROOF_QUALITY;
	lf.lfCharSet = DEFAULT_CHARSET;
	strcpy(lf.lfFaceName, szDefFontName);
	pCFont.CreateFontIndirect(&lf);

[sma]

I've search many online resources for an answer but I can't seem to find one.

I don't know if changing the Map Mode to WW_TWIPS would help but it appears that Word uses twips to define all size data it may be a hint.

Will need to look further.