form1.frm

listbox的使用

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "Form1"
   ClientHeight    =   6690
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   7935
   LinkTopic       =   "Form1"
   ScaleHeight     =   6690
   ScaleWidth      =   7935
   StartUpPosition =   3  '窗口缺省
   Begin VB.CommandButton Command2 
      Caption         =   "<<"
      Height          =   375
      Left            =   3720
      TabIndex        =   3
      Top             =   2760
      Width           =   855
   End
   Begin VB.CommandButton Command1 
      Caption         =   ">>"
      Height          =   375
      Left            =   3720
      TabIndex        =   2
      Top             =   1320
      Width           =   855
   End
   Begin VB.ListBox List2 
      Height          =   3630
      Left            =   4800
      Style           =   1  'Checkbox
      TabIndex        =   1
      Top             =   840
      Width           =   2655
   End
   Begin VB.ListBox List1 
      Height          =   3630
      Left            =   720
      Style           =   1  'Checkbox
      TabIndex        =   0
      Top             =   840
      Width           =   2655
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False


Dim count1, count2 As Integer

Private Sub Command1_Click()
count1 = List1.ListCount
ReDim select1(count1) As String
ReDim id1(count1) As Integer

For i = 0 To count1 - 1
    select1(i) = List1.List(i)
    If List1.Selected(i) = True Then
     id1(i) = 1
     Else
     id1(i) = 0
     End If
Next
List1.Clear
For i = 0 To count1 - 1
    If id1(i) = 0 Then
        List1.AddItem select1(i)
    Else
        List2.AddItem select1(i)
    End If
Next
If List2.ListCount > 0 Then
    Command2.Enabled = True
End If
If List1.ListCount = 0 Then
    Command1.Enabled = False
End If
End Sub

Private Sub Command2_Click()
Dim select2() As String

Dim id2() As Integer
count2 = List2.ListCount
For i = 0 To count2 - 1
    ReDim Preserve id2(i)
    ReDim Preserve select2(i)
    select2(i) = List2.List(i)
    If List2.Selected(i) = True Then
        id2(i) = 1
    Else
        id2(i) = 0
    End If
Next
List2.Clear
For i = 0 To count2 - 1
    If id2(i) = 0 Then
        List2.AddItem select2(i)
    Else
        List1.AddItem select2(i)
    End If
Next
If List1.ListCount > 0 Then
    Command1.Enabled = True
End If
If List2.ListCount = 0 Then
    Command2.Enabled = False
End If
End Sub

Private Sub Form_Load()
Command2.Enabled = False
List1.AddItem "软件工程师"
List1.AddItem "硬件工程师"
List1.AddItem "程序员"
List1.AddItem "数据库管理员"
List1.AddItem "网络工程师"

End Sub