form1.frm

好用啊

VERSION 5.00
Begin VB.Form Form1 
   Caption         =   "拖放"
   ClientHeight    =   1725
   ClientLeft      =   60
   ClientTop       =   345
   ClientWidth     =   3810
   LinkTopic       =   "Form1"
   ScaleHeight     =   1725
   ScaleWidth      =   3810
   StartUpPosition =   3  'Windows Default
   Begin VB.ListBox List1 
      DragIcon        =   "Form1.frx":0000
      Height          =   1500
      ItemData        =   "Form1.frx":0442
      Left            =   0
      List            =   "Form1.frx":045B
      TabIndex        =   1
      Top             =   0
      Width           =   1770
   End
   Begin VB.ListBox List2 
      DragIcon        =   "Form1.frx":0497
      Height          =   1500
      ItemData        =   "Form1.frx":08D9
      Left            =   1950
      List            =   "Form1.frx":0901
      TabIndex        =   0
      Top             =   15
      Width           =   1740
   End
End
Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Option Explicit
    Private Sub Form_Load()
        List1.Tag = 1
        List2.Tag = 2
        Form2.Show
    End Sub
    
    Private Sub List1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
        If List1.ListIndex >= 0 Then List1.Drag
    End Sub
    
    Private Sub List2_MouseDown(Button As Integer, Shift As Integer, X As Single, Y As Single)
        If List2.ListIndex >= 0 Then List2.Drag
    End Sub
    
    Private Sub List1_DragDrop(Source As Control, X As Single, Y As Single)
        If Source.Tag = 2 Then
            Source.Drag 0
        Else
            List1.AddItem Source.List(Source.ListIndex)
            Source.RemoveItem (Source.ListIndex)
        End If
    End Sub
    Private Sub List2_DragDrop(Source As Control, X As Single, Y As Single)
        If Source.Tag = 1 Then
            Source.Drag 0
        Else
            List2.AddItem Source.List(Source.ListIndex)
            Source.RemoveItem (Source.ListIndex)
        End If
    End Sub