getword.frm

100个vb编程实例,什么都有

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "鼠标取词"
   ClientHeight    =   2355
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   5160
   LinkTopic       =   "Form1"
   ScaleHeight     =   157
   ScaleMode       =   3  'Pixel
   ScaleWidth      =   344
   StartUpPosition =   2  '屏幕中心
   Begin VB.TextBox Text1 
      BeginProperty Font 
         Name            =   "MS Serif"
         Size            =   12
         Charset         =   0
         Weight          =   400
         Underline       =   0   'False
         Italic          =   0   'False
         Strikethrough   =   0   'False
      EndProperty
      Height          =   1815
      Left            =   240
      MultiLine       =   -1  'True
      ScrollBars      =   2  'Vertical
      TabIndex        =   0
      Text            =   "GetWord.frx":0000
      Top             =   240
      Width           =   4695
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
 
Private Sub Text1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
    Dim pos As Long, lc As Long
    Dim Line As Integer, CharPos As Integer
    
    pos = X / Screen.TwipsPerPixelX + Y / Screen.TwipsPerPixelY * 65536
    lc = SendMessage(Text1.hwnd, EM_CHARFROMPOS, 0, ByVal pos)
    
    Line = lc \ 65536
    CharPos = lc Mod 65536
    
    MsgBox GetWord(Text1, CharPos)



End Sub

Function GetWord(txt As TextBox, pos As Integer) As String
    Dim bArr() As Byte, pos1 As Integer, pos2 As Integer, i As Integer
    
    bArr = StrConv(txt.Text, vbFromUnicode)
    pos1 = 0: pos2 = UBound(bArr)
    
    
    For i = pos - 1 To 0 Step -1
        If IsDelimiter(bArr(i)) Then
            pos1 = i + 1
            Exit For
        End If
    Next
    
    
    For i = pos To UBound(bArr)
        If IsDelimiter(bArr(i)) Then
            pos2 = i - 1
            Exit For
        End If
    Next
    
    If pos2 > pos1 Then
        ReDim bArr2(pos2 - pos1) As Byte
        For i = pos1 To pos2
            bArr2(i - pos1) = bArr(i)
        Next
    
        GetWord = StrConv(bArr2, vbUnicode)
    Else
        GetWord = ""
    End If
End Function

Function IsDelimiter(ByVal Char As Byte) As Boolean
    Dim S As String
    
    S = Chr(Char)
    IsDelimiter = False
    If S = " " Or S = "," Or S = "." Or S = "?" Or S = vbCr Or S = vbLf Then
        IsDelimiter = True
    End If
End Function

Function GetLine(txt As TextBox, ByVal Line As Integer) As String
    Dim S As String, Length As Integer, pos As Long
    
    GetLine = ""
    pos = SendMessage(txt.hwnd, EM_LINEINDEX, Line, ByVal 0&)
    Length = SendMessage(txt.hwnd, EM_LINELENGTH, pos, ByVal 0&)
    S = String(Length, Chr(0))
    RtlMoveMemory ByVal S, Length, 2
    If SendMessage(Text1.hwnd, EM_GETLINE, Line, ByVal S) > 0 Then
        GetLine = S
    End If
End Function

Private Sub Text1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
    Dim pos As Long, lc As Long
    Dim Line As Integer, CharPos As Integer
    
    pos = X / Screen.TwipsPerPixelX + Y / Screen.TwipsPerPixelY * 65536
    lc = SendMessage(Text1.hwnd, EM_CHARFROMPOS, 0, ByVal pos)
    
    Line = lc \ 65536
    CharPos = lc Mod 65536
    
    Text1.ToolTipText = GetWord(Text1, CharPos)
End Sub