display.txt

在有些软件里当鼠标移到某单词上,其注释就会显示单词的中文解释.这样的软件是如何制作的呢?下面我就介绍以下获取鼠标所在单词的方法,至于中文结实要关系到数据库及字库问题在此我不做解释. 首先建立新工程,在

在有些软件里当鼠标移到某单词上,其注释就会显示单词的中文解释.这样的软件是如何制作的呢?下面我就介绍以下获取鼠标所在单词的方法,至于中文结实要关系到数据库及字库问题在此我不做解释. 
首先建立新工程,在FORM上添加一个TEXT文本框. 
声明SendMessage函数. 
Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long 
Const EM_CHARFORMPOS=&HD7'在API浏览器里无此值请自己加上. 

自定义过程: 
Private Sub Text1_MouseDown(Button As Intege,Shift As Integer,x As Single, y As Single) 
'获取鼠标所点的是第几行第几个字符 
Dim pos As Long,Lc As Long 
Dim Line As Integer,CharPos As Integer 

x=x/Screen.TwipsPerPixelX 
y=y/Screen.TwipsperPixelY 
pos=x+y*65536 
Lc=SendMessage(Text1.hwnd,EM_CHARFROMPOS,0,ByVal pos) 

Line=Lc65536 '第几行 
CharPos=Lc MOD 65536 '第几个字符 
End Sub 
'接下来才是真正的读取函数 
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)'转换成Byte数组 
pos1=0:pos2=UBound(bArr) 

'向前搜索分格符的位置 
For i=pos-1 To 0 Step -1 
If IsDelimiter(bArr(i)) Then 
pos1=i+1 
Exit For 
End If 
Next 
'向后搜寻分隔符字符的位置 
For i=pos To UBound(bArr) 
If IsDelimiter(bArr(i)) Then 
pos2=i-1 
Exit For 
End If 
Next 
'截取pos1-pos2之间的字符,以构成一个单词 
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 
'IsDelimiter函数 
Functon 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