VB6实现MUI程序方法是怎么样的

这期内容当中小编将会给大家带来有关VB6实现MUI程序方法是怎么样的，文章内容丰富且以专业的角度为大家分析和叙述，阅读完这篇文章希望大家可以有所收获。

为大家详细讲述的是VB6实现MUI程序方法，希望本文能给大家的日常开发工作带来一些启示。

之前,我负责一个VB6编写的办公自动化系统,要求能在运行时,支持在不同语言间切换(英文,中文,日文,德文,法文和西班牙文);实质就是实现一个VB6的MUI程序.

这个需要的困难在于VB6显示文本的标准控件(Label,Textbox等)不支持Unicode;但字符串在其内部是按Unicode保存的,也就是说VB6本身是支持Unicode的.

VB6中,标准控件显示字符串的过程如下:

1) 标准控件先将Unicode字符串转换成ANSI字符串;

2) 标准控件尝试将ANSI字符串转换成其Font.Charset属性中指定的字符集格式的字符串;如果转换失败,则显示为问号(?).

具体可参照:Display Unicode Strings in Visual Basic 6.0.

因此,实现MUI程序的思路有两种:

1) 将标准控件替换为能支持Unicode的控件;

2) 将资源文件中不同字符集的文本,转换为ANSI格式,提供给标准控件使用;

第1)种方式可用 Forms 2.0 (fm20.dll);

第2)种方式,我在网上找到两篇文章,但各有不足:

a) Auto-Detect Language and Display Unicode in VB6 TextBox and Label Controls;

ChilkatCharset2控件需购买,具对日文的一些标点符号(如全角句号)不支持.

b) How To Convert from ANSI to Unicode & Unicode to ANSI for OLE

没有测试成功.

下面,着重介绍我自己认为比较成功的实现,它使用了ADODB.Stream(msado25.tlb);其实现思路如下:

1) 将程序中用到的文本保存为Unicode格式的资源文件中;

之所以将资源文本保存为双字节的Unicode格式,而非Utf8或Utf7格式,可省去从其它格式向VB6支持的Unicode格式转换过程.

2) 将显示文本的标准控件的Font.Charset,设置为程序要显示语言所对应的字符集,并设置一种支持这种字符集的字体到Font.Name属性

  If g_Str.NumJapanese > 0 Then       charset = "Shift_JIS"       Text1.Font.Name = "MS UI Gothic"       Text1.Font.charset = 128            ElseIf g_Str.NumKorean > 0 Then       charset = "ks_c_5601-1987"       Text1.Font.Name = "GulimChe"       Text1.Font.charset = 129         ElseIf g_Str.NumCentralEuro > 0 Then      charset = "windows-1250"      Text1.Font.Name = "Arial"      Text1.Font.charset = 238          ElseIf g_Str.NumArabic > 0 Then      charset = "windows-1256"      Text1.Font.Name = "Traditional Arabic"      Text1.Font.charset = 178          ElseIf g_Str.NumHebrew > 0 Then      charset = "windows-1255"      Text1.Font.Name = "David"      Text1.Font.charset = 177          ElseIf g_Str.NumCyrillic > 0 Then      charset = "windows-1251"      Text1.Font.Name = "Arial"      Text1.Font.charset = 204          ElseIf g_Str.NumGreek > 0 Then      charset = "windows-1253"      Text1.Font.Name = "Arial"      Text1.Font.charset = 161          ElseIf g_Str.NumThai > 0 Then      charset = "windows-874"      Text1.Font.Name = "Angsana New"      Text1.Font.charset = 222          ElseIf g_Str.NumChinese > 0 Then      charset = "gb2312"      Text1.Font.Name = "SimSun"      Text1.Font.charset = 134       ' An alternative is to use Big5:       ' Text1.Font.Name = "MingLiu"       'charset = "big5"       'fontCh = 136          Else      charset = "windows-1252"      Text1.Font.charset = 0      Text1.Font.Name = "Arial" End If

3) 根据要显示的语言,利用ADODB.Stream将资源文件中Unicode格式保存的字符串转换成操作系统的区域语言(Locale)支持字符集的字符串;

' 调用API来获取操作系统默认的区域语言设置(LocaleID)    Private Declare Function GetSystemDefaultLCID Lib "kernel32" () As Long       ' 将Unicode字符串,转换为指定字符集的字节数组;    ' 用于转换用资源文件中读取的文本;    Public Function ConvertStringToBytes(ByRef strText As String, charset As String) As Byte()            Dim objStream As ADODB.Stream        Dim data() As Byte             ' init stream       Set objStream = New ADODB.Stream       objStream.charset = charset       objStream.Mode = adModeReadWrite       objStream.Type = adTypeText       objStream.Open              ' write bytes into stream       objStream.WriteText strText       objStream.Flush              ' rewind stream and read text       objStream.Position = 0       objStream.Type = adTypeBinary   '    objStream.Read 3 ' skip first 3 bytes as this is the utf-8 marker       data = objStream.Read()             ' close up and return       objStream.Close       ConvertStringToUtf8Bytes = data      End Function  ' 转换为指定字符集的字节数组,转换为ANSI(即LocaleID)对应的字符集的字符串;   ' 用于将ConvertStringToBytes()返回的字节数组转换为GetCharset()字符集的字符串.   Public Function ConvertBytesToString(ByRef data() As Byte, charset As String) As String         Dim objStream As ADODB.Stream       Dim strTmp As String                ' init stream       Set objStream = New ADODB.Stream       objStream.charset = charset       objStream.Mode = adModeReadWrite      objStream.Type = adTypeBinary       objStream.Open             ' write bytes into stream       objStream.Write data       objStream.Flush             ' rewind stream and read text       objStream.Position = 0       objStream.Type = adTypeText       strTmp = objStream.ReadText              ' close up and return       objStream.Close       ConvertUtf8BytesToString = strTmp      End Function     '获取操作系统默认区域语言对应的字符集   Public Function GetCharset() As String      Dim localeId As Long      Dim charset As String             ' 获取操作系统的LocaleId       localeId = GetSystemDefaultLCID()              Select Case localeId                  Case 1033               charset = "windows-1252"          Case 2052               charset = "gb2312"          Case 1041               charset = "Shift_JIS"          Case Else              charset = "windows-1252"      End Select             GetCharset = charset   End Function     '显示资源文本中的文本   Private Sub DisplayText(filename As String)          '保存资源文本中的文本的变量       Dim textBytes As Variant      Dim f As New FileSystemObject       Dim fs As TextStream       '将Unicode文本读取到变量中       Set fs = f.OpenTextFile(filename, ForReading, False, TristateTrue)          Do While Not fs.AtEndOfStream           textBytes = fs.ReadAll      Loop        fs.Close       ' Convert to a Unicode string:      Dim s As String     s = textBytes      Dim t As Long     ' CkString是免费的第三方组件,可自动判定一个字符串所对应的字符集      ' 下载地址:http://www.chilkatsoft.com/download/CkString.zip      Dim g_Str As New CkString       g_Str.Str = s            '获取资源文本所代表的字符集名称,设置对应的字体和字符集到textbox上      Dim charset As String     If g_Str.NumJapanese > 0 Then  '日文          charset = "Shift_JIS"         Text1.Font.Name = "MS UI Gothic"         Text1.Font.charset = 128                ElseIf g_Str.NumKorean > 0 Then '韩语          charset = "ks_c_5601-1987"         Text1.Font.Name = "GulimChe"         Text1.Font.charset = 129                ElseIf g_Str.NumCentralEuro > 0 Then '中欧语言          charset = "windows-1250"         Text1.Font.Name = "Arial"         Text1.Font.charset = 238                ElseIf g_Str.NumArabic > 0 Then '阿拉伯语          charset = "windows-1256"         Text1.Font.Name = "Traditional Arabic"         Text1.Font.charset = 178      ElseIf g_Str.NumGreek > 0 Then  '希腊语          charset = "windows-1253"         Text1.Font.Name = "Arial"         Text1.Font.charset = 161      ElseIf g_Str.NumThai > 0 Then  '泰语          charset = "windows-874"         Text1.Font.Name = "Angsana New"         Text1.Font.charset = 222      ElseIf g_Str.NumChinese > 0 Then '中文          charset = "gb2312"         Text1.Font.Name = "SimSun"         Text1.Font.charset = 134         ' 繁体则使用Big5:         ' Text1.Font.Name = "MingLiu"          'charset = "big5"          'Text1.Font.charset = 136      Else '默认值          charset = "windows-1252"         Text1.Font.charset = 0          Text1.Font.Name = "Arial"     End If      Dim bytes() As Byte     Dim g_OSCharset As String     '获取操作系统默认语言对应的字符集     g_OSCharset = GetCharset()      '先将Unicode资源文本转换成对应的字节数组;     bytes = ConvertStringToBytes(s, charset)      '将字节数组转换成ANSI(即默认字符集)对应的字符串      vbstr2 = ConvertBytesToString(bytes, g_OSCharset)      ' 设置字符串到VB6的标准控件中      Me.Text1.Text = vbstr2  End Sub

上述就是小编为大家分享的VB6实现MUI程序方法是怎么样的了，如果刚好有类似的疑惑，不妨参照上述分析进行理解。如果想知道更多相关知识，欢迎关注行业资讯频道。