This example shows you how to enable the user to drop and drag items between two list boxes. Add two listboxes to your form, and insert the following code.
Private Sub Form_Load()
' Populate the list
List1.AddItem "James"
List1.AddItem "Frederick"
List1.AddItem "Ann"
List1.AddItem "Paul"
List1.AddItem "Sarah"
List1.OLEDropMode = 1
List2.OLEDropMode = 1
End Sub
' Code managing dropping from list one
' to list two
Private Sub List1_MouseDown(Button As Integer, Shift As Integer, X As Single, Y
As Single)
List1.OLEDrag ' Begin dragging
End Sub
Private Sub List1_OLEStartDrag(Data As DataObject, AllowedEffects As Long)
' Only allow moves
AllowedEffects = vbDropEffectMove
' Assign the ListBox selection to the DataObject
Data.SetData List1
End Sub
Private Sub List2_OLEDragDrop(Data As DataObject, Effect As Long, Button As
Integer, Shift As Integer, X As Single, Y As Single)
Dim strList As String
' Check the format of the DataObject
If Not Data.GetFormat(vbCFText) Then Exit Sub
' Retrieve the text from the DataObject
strList = Data.GetData(vbCFText)
' If the item was not dropped on itself
If Not strList = List2.Text Then
List2.AddItem strList
'Remove the item from the ListBox
List1.RemoveItem List1.ListIndex
End If
End Sub
''
''
'' Code managing dropping from list one
'' to list two
''
Private Sub List2_MouseDown(Button As Integer, Shift As Integer, X As Single, Y
As Single)
List2.OLEDrag ' Begin dragging
End Sub
Private Sub List2_OLEStartDrag(Data As DataObject, AllowedEffects As Long)
' Only allow moves
AllowedEffects = vbDropEffectMove
' Assign the ListBox selection to the DataObject
Data.SetData List2
End Sub
Private Sub List1_OLEDragDrop(Data As DataObject, Effect As Long, Button As
Integer, Shift As Integer, X As Single, Y As Single)
Dim strList As String
' Check the format of the DataObject
If Not Data.GetFormat(vbCFText) Then Exit Sub
' Retrieve the text from the DataObject
strList = Data.GetData(vbCFText)
' If the item was not dropped on itself
If Not strList = List1.Text Then
List1.AddItem strList
'Remove the item from the ListBox
List2.RemoveItem List2.ListIndex
End If
End Sub
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