Microsoft KB Archive/181276

= How To Display Extended ASCII WingDings on DBCS Systems =

Article ID: 181276

Article Last Modified on 7/1/2004

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APPLIES TO


 * Microsoft Visual Basic 5.0 Learning Edition
 * Microsoft Visual Basic 5.0 Professional Edition
 * Microsoft Visual Basic 5.0 Enterprise Edition

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This article was previously published under Q181276



SUMMARY
From Visual Basic 5.0, you cannot consistently produce extended ASCII WingDings on DBCS (Double-Byte Character Set) versions of Windows 95, Windows 98, Windows Me, Windows NT 4.0, or Windows 2000. DBCS versions of Windows include Chinese, Japanese, and Korean.



MORE INFORMATION
Extended ASCII WingDings are those the have ASCII values 128 through 255. These WingDings cannot be displayed from the DBCS code pages because lead byte ranges for the double byte character sets can start at 129. A lead byte is the first half of the two byte representation used to describe characters in the double byte character sets.

Character sets are sometimes called charsets. Charsets refer to the same collections of characters defined by Windows code pages but their identification numbers can be expressed in a single byte. A code page is used to associate a numerical value to each character used in the language. For example, to illustrate the relationship between code pages and charsets, the code page for Chinese is 950 and the charset that corresponds to this code page has a value of 136 (see CHINESEBIG5_CHARSET in step 3 below). By changing the charset using the CreateFontIndirect API, you can display these WingDings using the TextOutA API.

There are other fonts whose extended ASCII characters can be displayed using this method.

The sample below displays all WingDings from 32 to 255 on DBCS Windows 95, Windows NT 4.0, and Windows 2000. It uses the CreateFontIndirect and TextOutA APIs. The method below can also be used to display extended ASCII characters for other fonts. To change the font in this sample, set lf.lfFaceName to the name of the font. It might also be necessary to modify lf.lfCharSet. Possible values for lf.lfCharset are listed as constants in the code below:  Create a new Standard EXE project in Visual Basic 5.0. Form1 is created by default. From the Project menu, select Add Module. Module1 is created by default.  Place the following code in the General Declarations section of Module1: Type LOGFONT lfHeight As Long lfWidth As Long lfEscapement As Long lfOrientation As Long lfWeight As Long lfItalic As Byte lfUnderline As Byte lfStrikeOut As Byte lfCharSet As Byte lfOutPrecision As Byte lfClipPrecision As Byte lfQuality As Byte lfPitchAndFamily As Byte lfFaceName As String * 32 End Type

'Charset constants 'Values for lf.lfCharSet: Public Const ANSI_CHARSET       = 0 Public Const DEFAULT_CHARSET    = 1 Public Const SYMBOL_CHARSET     = 2 Public Const SHIFTJIS_CHARSET   = 128 Public Const HANGUL_CHARSET     = 129 Public Const GB2312_CHARSET     = 134 Public Const CHINESEBIG5_CHARSET = 136 Public Const GREEK_CHARSET      = 161 Public Const TURKISH_CHARSET    = 162 Public Const HEBREW_CHARSET     = 177 Public Const ARABIC_CHARSET     = 178 Public Const BALTIC_CHARSET     = 186 Public Const RUSSIAN_CHARSET    = 204 Public Const THAI_CHARSET       = 222 Public Const EE_CHARSET         = 238 Public Const OEM_CHARSET        = 255

'Values to be used with GetSysColor: Public Const COLOR_BTNFACE = 15 Public Const COLOR_ACTIVEBORDER = 10 Public Const COLOR_ACTIVECAPTION = 2 Public Const COLOR_ADJ_MAX = 100 Public Const COLOR_ADJ_MIN = -100 'shorts Public Const COLOR_APPWORKSPACE = 12 Public Const COLOR_BACKGROUND = 1 Public Const COLOR_BTNHIGHLIGHT = 20 Public Const COLOR_BTNSHADOW = 16 Public Const COLOR_BTNTEXT = 18 Public Const COLOR_CAPTIONTEXT = 9 Public Const COLOR_GRAYTEXT = 17 Public Const COLOR_HIGHLIGHT = 13 Public Const COLOR_HIGHLIGHTTEXT = 14 Public Const COLOR_INACTIVEBORDER = 11 Public Const COLOR_INACTIVECAPTION = 3 Public Const COLOR_INACTIVECAPTIONTEXT = 19 Public Const COLOR_MENUTEXT = 7 Public Const COLOR_SCROLLBAR = 0 Public Const COLOR_WINDOW = 5 Public Const COLOR_WINDOWFRAME = 6 Public Const COLOR_WINDOWTEXT = 8

Declare Function TextOut Lib "gdi32" Alias "TextOutA" (ByVal hdc As _        Long, ByVal x As Long, ByVal y As Long, lpString As Any, _         ByVal nCount As Long) As Long Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) _ As Long Declare Function CreateFontIndirect Lib "gdi32" Alias _ "CreateFontIndirectA" (lpLogFont As LOGFONT) As Long Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, _        ByVal hObject As Long) As Long Declare Function SetBkColor Lib "gdi32" (ByVal hdc As Long, _        ByVal crColor As Long) As Long Declare Function GetBkMode Lib "gdi32" (ByVal hdc As Long) As Long Declare Function GetSysColor Lib "user32" (ByVal nIndex As Long) _ As Long

 Place a CommandButton on Form1.  Place the following code in the click event of the CommandButton (Command1): Private Sub Command1_Click

Dim lf As LOGFONT Dim chars(257) As Byte Dim sysColor As Long Dim DispChar As Integer Dim NumDispchar As Integer Dim prevBkCol As Long Dim hFont As Long Dim StartASCII As Integer Dim StopASCII As Integer Dim StartRow As Integer Dim NumOfChars As Integer Dim i As Integer Dim j As Integer Dim EndRow As Integer Dim NewStart As Integer Dim tmp As Integer Dim xd As Long Dim xt As Long Dim xs As Long

'These are the important settings: lfCharSet and lfFaceName lf.lfCharSet = SYMBOL_CHARSET lf.lfFaceName = "WingDings" & Chr$(0)

lf.lfClipPrecision = 64 lf.lfOutPrecision = 0 lf.lfEscapement = 0 lf.lfItalic = 0 lf.lfWidth = 16 lf.lfHeight = 32 lf.lfOrientation = 0

Form1.Caption = lf.lfFaceName Form1.Refresh sysColor = GetSysColor(COLOR_BTNFACE) 'Gets button system color prevBkCol = SetBkColor(Form1.hdc, sysColor) 'Set background color hFont = CreateFontIndirect(lf) xs = SelectObject(Form1.hdc, hFont)

DispChar = 32 'Number of characters to display in a row StartASCII = 32 'Starting with character having this ASCII value StopASCII = 255 'Ending with this ASCII character StartRow = 1

If StartASCII < 0 Then StartASCII = 32 If StopASCII > 255 Then StopASCII = 255 If StartASCII > StopASCII Then 'If StartASCII is larger than 'StopASCII swap tmp = StartASCII StartASCII = StopASCII StopASCII = tmp End If

NumOfChars = StopASCII - StartASCII + 1

If Int(NumOfChars / DispChar) = (NumOfChars) / DispChar Then EndRow = Int(NumOfChars / DispChar) Else EndRow = Int(NumOfChars / DispChar) + 1 End If

For i = StartASCII To StopASCII chars(i) = i        Next i

'Display characters on the form in rows containing 32 characters For j = StartRow To EndRow NewStart = StartASCII + (j - 1) * DispChar

If NumOfChars < DispChar And NumOfChars > 0 Then NumDispchar = NumOfChars Else NumDispchar = DispChar End If

xt = TextOut(Form1.hdc, 0, j * lf.lfHeight + 2, _              chars(NewStart), NumDispchar) NumOfChars = NumOfChars - NumDispchar Next j

xd = DeleteObject(hFont) Form1.Caption = Form1.Caption & "  From " & _ StartASCII & " to " & StopASCII

End Sub

 Press the F5 key to run the application, and click the CommandButton. Note that all WingDings having an ASCII value from 32 to 255 are displayed.</ol>

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