frmlist.frm

Visual Basic 6 大学教程的代码

VERSION 5.00
Begin VB.Form frmList 
   Caption         =   "Fig. 10.22: ListBox"
   ClientHeight    =   3195
   ClientLeft      =   2760
   ClientTop       =   2145
   ClientWidth     =   4350
   LinkTopic       =   "Form1"
   ScaleHeight     =   3195
   ScaleWidth      =   4350
   Begin VB.CommandButton cmdExit 
      Caption         =   "E&xit"
      Height          =   495
      Left            =   2985
      TabIndex        =   5
      Top             =   2400
      Width           =   1215
   End
   Begin VB.CommandButton cmdClear 
      Caption         =   "&Clear"
      Height          =   495
      Left            =   2985
      TabIndex        =   4
      Top             =   1800
      Width           =   1215
   End
   Begin VB.CommandButton cmdRemove 
      Caption         =   "&Remove"
      Height          =   495
      Left            =   2985
      TabIndex        =   3
      Top             =   1200
      Width           =   1215
   End
   Begin VB.CommandButton cmdAdd 
      Caption         =   "&Add"
      Height          =   495
      Left            =   2985
      TabIndex        =   1
      Top             =   600
      Width           =   1215
   End
   Begin VB.TextBox txtInput 
      Height          =   360
      Left            =   2985
      TabIndex        =   0
      Top             =   135
      Width           =   1215
   End
   Begin VB.ListBox lstList 
      Height          =   2790
      Left            =   105
      Sorted          =   -1  'True
      TabIndex        =   2
      Top             =   105
      Width           =   2415
   End
End
Attribute VB_Name = "frmList"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
' Fig. 10.22
' Demonstrating the ListBox control
Option Explicit        ' General declaration

Private Sub cmdAdd_Click()
   Call lstList.AddItem(txtInput.Text)  ' Add Text to ListBox
   txtInput.Text = ""      ' Clear TextBox
End Sub

Private Sub cmdRemove_Click()
   
   ' If an item is selected then delete it
   If lstList.ListIndex <> -1 Then
      Call lstList.RemoveItem(lstList.ListIndex)
   End If
   
End Sub

Private Sub cmdClear_Click()
   Call lstList.Clear    ' Remove all list items
End Sub

Private Sub cmdExit_Click()
   End    ' Terminate execution
End Sub