ASCII

[Walt Decker]

Other than capturing the image in a dos-session, is there any way to display the ASCII characters below decimal 32 and above decimal 127?


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[Eric Pearson]

Walt --

This is strictly a function of which characters are supported by each Windows font; it's not a problem that is specific to PB/CC or PB/DLL programs.

If you are using PB/CC, try changing the console font from "bitmap" or "raster" to "TrueType". Or vice versa... I forget which one does not support all 256 characters. Also, under certain circumstances you may need to change the console font before the characters are displayed.

If you are using PB/DLL, you'll need to use a font that supports all of the characters you need.


-- Eric

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[This message has been edited by Eric Pearson (edited January 14, 2001).]

[Semen Matusovski]

Walt --
Use %OEM_FIXED_FONT (Terminal) or TTF "Lucida Console" (more nice, but 0-31 + not sure about W95).

   #Compile Exe
   #Register None
   #Dim All
   #Include "WIN32API.INC"

   CallBack Function DlgProc
      Select Case CbMsg
         Case %WM_PAINT
            Dim hDC As Long, hFont As Long, i As Long, j As Long
            hdc = GetDC(CbHndl)
            Local lf As Logfont, lResult As Long
            lResult = GetStockObject(%OEM_FIXED_FONT)
            GetObject lResult, SizeOf(lf), ByVal VarPtr(lf)
            ' change height/width
            hFont = CreateFontIndirect(lf)
            SelectObject hDC, hFont
            Dim z As String * 16
            For i = 0 To 15
               For j = 0 To 15
                  Mid$(z, j + 1, 1) = Chr$(i * 16 + j)
               Next
               TextOut hdc, 0, lf.lfHeight * i, ByVal VarPtr(z), 16
            Next
            ReleaseDC CbHndl, hDC
            DeleteObject hFont
       End Select
    End Function

    Function PbMain
       Local hDlg As Long
       Dialog New 0, "OEM",,, 200, 200, %WS_CAPTION Or %WS_SYSMENU To hDlg
       Dialog Show Modal hDlg Call DlgProc
    End Function

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[Tom Hanlin]

DOS uses an extended ASCII character set, also referred to as the
OEM character set. The characters above 127 are locale-dependent
(they may differ in different countries). In Windows, you are most
likely to use the ANSI character set, which is similar but not
identical. To translate from one to the other, use the Windows API
functions OemToChar and CharToOem. It is not always possible to do
a perfect translation from one character set to the other. This
depends, in part, on the Windows font involved, as some fonts are
more ANSI-compliant than others.

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Tom Hanlin
PowerBASIC Staff