ListBox 控制項、DataObject 物件、MouseMove 事件、StartDrag、SetText 方法範例

以下範例示範了利用 DataObject 將拖曳的文字從一個 ListBox 拖到另一個 ListBox 的操作。 本程式碼範例在 MouseMove 事件中使用 SetText 和 StartDrag 方法來實作拖放操作。

若要使用本範例，請將此範例程式碼複製到表單的宣告部分中。 Make sure that the form contains two ListBox controls named ListBox1 and ListBox2. 你還需要在第二個 清單框中新增選項。

Private Sub ListBox2_BeforeDragOver(ByVal Cancel As _ 
 MSForms.ReturnBoolean, ByVal Data As _ 
 MSForms.DataObject, ByVal X As Single, _ 
 ByVal Y As Single, ByVal DragState As Long, _ 
 ByVal Effect As MSForms.ReturnEffect, _ 
 ByVal Shift As Integer) 
 Cancel = True 
 Effect = 1 
End Sub 
 
Private Sub ListBox2_BeforeDropOrPaste(ByVal _ 
 Cancel As MSForms.ReturnBoolean, _ 
 ByVal Action As Long, ByVal Data As _ 
 MSForms.DataObject, ByVal X As Single, _ 
 ByVal Y As Single, ByVal Effect As _ 
 MSForms.ReturnEffect, ByVal Shift As Integer) 
 Cancel = True 
 Effect = 1 
 ListBox2.AddItem Data.GetText 
End Sub 
 
Private Sub ListBox1_MouseMove(ByVal Button As _ 
 Integer, ByVal Shift As Integer, ByVal X As _ 
 Single, ByVal Y As Single) 
 Dim MyDataObject As DataObject 
 If Button = 1 Then 
 Set MyDataObject = New DataObject 
 Dim Effect As Integer 
 MyDataObject.SetText ListBox1.Value 
 Effect = MyDataObject.StartDrag 
 End If 
End Sub 
 
Private Sub UserForm_Initialize() 
 For i = 1 To 10 
 ListBox1.AddItem "Choice " _ 
 & (ListBox1.ListCount + 1) 
 Next i 
End Sub

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