★★★敬请留意★★★：和微软一模一样的记事本的源代码（4）

Option Explicit

Private Sub CancelButton_Click()
OKButton_Click
Form1.Text1.SelText = Text2.Text
End Sub

Private Sub Command1_Click()
 If Fstring = "" Then
    Fstring = Text1.Text
Else
    If Text1.Text <> Fstring And Text1.Text <> "" Then
    Fstring = Text1.Text
    End If
   
End If
   
For StartPos = 0 To Len(Form1.Text1)
    If Check1.Value = 1 Then
        FoundPos = Form1.Text1.Find(Fstring, StartPos, , 4)
   
    Else
        FoundPos = Form1.Text1.Find(Fstring, StartPos)
    End If
    If FoundPos <> -1 Then
        Form1.Text1.SelText = Text2.Text
   
    End If
Next StartPos
End Sub

Private Sub Command2_Click()
Unload Me
End Sub

Private Sub Form_Load()
OKButton.Enabled = False
CancelButton.Enabled = False
Command1.Enabled = False
End Sub

Private Sub OKButton_Click()

   If Fstring = "" Then
    Fstring = Text1.Text
Else
    If Text1.Text <> Fstring And Text1.Text <> "" Then
    Fstring = Text1.Text
    End If
   
End If
   
    StartPos = Form1.Text1.SelStart + Form1.Text1.SelLength
    EndPos = Len(Form1.Text1)
    If Check1.Value = 1 Then
        FoundPos = Form1.Text1.Find(Fstring, StartPos, EndPos, 4)
   
    Else
        FoundPos = Form1.Text1.Find(Fstring, StartPos, EndPos)
    End If
    If FoundPos <> -1 Then
        StartPos = FoundPos + 1
    Else
        MsgBox "find   not   " + Chr(34) + Fstring + Chr(34)
    End If

'Gstring = Fstring
End Sub

Private Sub Text1_Change()

If Text1.Text <> "" Then
    OKButton.Enabled = True
    CancelButton.Enabled = True
    Command1.Enabled = True
Else
    OKButton.Enabled = False
    CancelButton.Enabled = False
    Command1.Enabled = False
   
End If

End Sub

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