richtextboxselect.frm

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VERSION 5.00
Object = "{3B7C8863-D78F-101B-B9B5-04021C009402}#1.2#0"; "RICHTX32.OCX"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   6015
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   7530
   LinkTopic       =   "Form1"
   ScaleHeight     =   6015
   ScaleWidth      =   7530
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command3 
      Caption         =   "退出"
      Height          =   315
      Left            =   6300
      TabIndex        =   3
      Top             =   4980
      Width           =   1095
   End
   Begin VB.CommandButton Command2 
      Caption         =   "选择字符串"
      Height          =   315
      Left            =   6300
      TabIndex        =   2
      Top             =   4440
      Width           =   1095
   End
   Begin VB.CommandButton Command1 
      Caption         =   "输入文本"
      Height          =   315
      Left            =   6300
      TabIndex        =   1
      Top             =   3840
      Width           =   1095
   End
   Begin RichTextLib.RichTextBox RichTextBox1 
      Height          =   5955
      Left            =   0
      TabIndex        =   0
      Top             =   60
      Width           =   6075
      _ExtentX        =   10716
      _ExtentY        =   10504
      _Version        =   393217
      Enabled         =   -1  'True
      TextRTF         =   $"RichTextBoxSelect.frx":0000
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Private Sub Command1_Click()
    Dim str As String
    Dim text As String
    
    str = "输入文本"
    text = InputBox(str)
    RichTextBox1.text = text
End Sub

Private Sub Command2_Click()
    Dim str As String
    Dim text As String
    Dim position As Integer
    Dim length As Integer
    str = "输入需选择的字符串"
    text = InputBox(str)
    If text <> "" Then
        position = InStr(RichTextBox1.text, text) - 1
        length = Len(text)
        RichTextBox1.SelStart = position
        RichTextBox1.SelLength = length
        RichTextBox1.SelColor = RGB(255, 0, 0)
        Do While InStr(position + length + 1, RichTextBox1.text, text) - 1 <> -1
            position = InStr(position + length + 1, RichTextBox1.text, text) - 1
            RichTextBox1.SelStart = position
            RichTextBox1.SelLength = length
            RichTextBox1.SelColor = RGB(255, 0, 0)
        Loop
    End If
End Sub

Private Sub Command3_Click()
    End
End Sub