Thread: Determining char width

  1. #1
    Registered User
    Join Date
    Nov 2002

    Determining char width

    Hi there!
    In my Notepad program, to determine char widths I use the following code.
    pDC->GetTextMetrics (&textmetrics);
    Size = pDC->GetTextExtent(pDoc->m_text);		
    pDoc->m_CarPos.x = -  textmetrics.tmAveCharWidth;
    This doesn't seem to be very effective. As sometimes I actually get it less than the actual width of the character (its the average, so its natural).
    Is there some other method to get the width of the last character in a CString, other than GetTextMetrics();

  2. #2
    It's full of stars adrianxw's Avatar
    Join Date
    Aug 2001
    GetTextMetrics() returns information about the font in general rather than any particular string of characters. GetTextExtentPoint32() works with strings rendered in a particular font, pass it a single character string.
    Wave upon wave of demented avengers march cheerfully out of obscurity unto the dream.

  3. #3
    Registered User
    Join Date
    Mar 2003
    Look up DT_CALCRECT.
    char strText[] = "Your line of text";
    RECT rectDummy = {0,0,0,0};
    int nHeight = pDC->DrawText(strText, -1, &rectDummy, DT_TOP | DT_SINGLELINE | DT_CALCRECT);
    int nWidth  = rectDummy.right - rectDummy.left;

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