form1.frm

这个不错

VERSION 5.00
Object = "{3B7C8863-D78F-101B-B9B5-04021C009402}#1.2#0"; "RICHTX32.OCX"
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   2700
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   3540
   LinkTopic       =   "Form1"
   ScaleHeight     =   2700
   ScaleWidth      =   3540
   StartUpPosition =   3  'Windows Default
   Begin VB.CommandButton Command1 
      Caption         =   "读取文本"
      Height          =   375
      Left            =   0
      TabIndex        =   1
      Top             =   2160
      Width           =   1455
   End
   Begin RichTextLib.RichTextBox RichTextBox1 
      Height          =   2055
      Left            =   0
      TabIndex        =   0
      Top             =   0
      Width           =   3255
      _ExtentX        =   5741
      _ExtentY        =   3625
      _Version        =   393217
      ScrollBars      =   3
      Appearance      =   0
      TextRTF         =   $"Form1.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()
    Form1.RichTextBox1.FileName = App.Path & "\vb100例.txt"
End Sub