by Robert Sadler (1 Submission)
Category: Complete Applications
Compatability: Visual Basic 3.0
Difficulty: Beginner
Date Added: Wed 3rd February 2021
Rating: 
(38 Votes)
Move selections back and forth between 2 listboxes. You can use command buttons or double click selections. This sample uses printer font names for testing.
Assumes
Form name frmSelectList should contain 2 listboxes named lstLists in a control array and 4 command buttons named cmdArrows in a control array that are used for arrows.
VBcodersOption Explicit
Private Sub cmdArrows_Click(Index As Integer)
Dim I As Integer
Select Case Index
Case 0 ' > Button
For i = 0 To lstLists(0).ListCount - 1
If lstLists(0).Selected(i) Then
lstLists(1).AddItem lstLists(0).List(i)
lstLists(1).ItemData(lstLists(1).NewIndex) = lstLists(0).ItemData(i)
End If
Next i
For i = (lstLists(0).ListCount - 1) To 0 Step -1
If lstLists(0).Selected(i) Then
lstLists(0).RemoveItem i
End If
Next i
Case 1 ' >> Button
For i = 0 To lstLists(0).ListCount - 1
lstLists(1).AddItem lstLists(0).List(i)
lstLists(1).ItemData(lstLists(1).NewIndex) = lstLists(0).ItemData(i)
Next i
For i = (lstLists(0).ListCount - 1) To 0 Step -1
lstLists(0).RemoveItem i
Next i
Case 2 ' < Button
For i = 0 To lstLists(1).ListCount - 1
If lstLists(1).Selected(i) Then
lstLists(0).AddItem lstLists(1).List(i)
lstLists(0).ItemData(lstLists(0).NewIndex) = lstLists(1).ItemData(i)
End If
Next i
For i = (lstLists(1).ListCount - 1) To 0 Step -1
If lstLists(1).Selected(i) Then
lstLists(1).RemoveItem i
End If
Next i
Case 3 ' << Button
For i = 0 To lstLists(1).ListCount - 1
lstLists(0).AddItem lstLists(1).List(i)
lstLists(0).ItemData(lstLists(0).NewIndex) = lstLists(1).ItemData(i)
Next i
For i = (lstLists(1).ListCount - 1) To 0 Step -1
lstLists(1).RemoveItem i
Next i
End Select
SetButtons
End Sub
Private Sub Form_Load()
Dim I As Integer, Flag As Boolean
cmdArrows(0).Caption = ">"
cmdArrows(1).Caption = ">>"
cmdArrows(2).Caption = "<"
cmdArrows(3).Caption = "<<"
For I = 0 To Printer.FontCount - 1
frmSelectList.lstLists(0).AddItem Printer.Fonts(I)
Next I
SetButtons ' go to set Select buttons
End Sub
Private Sub lstLists_Click(Index As Integer)
SetButtons ' go to set select buttons
End Sub
Public Sub SetButtons()
cmdArrows(0).Enabled = False
cmdArrows(1).Enabled = False
cmdArrows(2).Enabled = False
cmdArrows(3).Enabled = False
If lstLists(0).ListCount > 0 Then
cmdArrows(1).Enabled = True ' >> Button
If lstLists(0).SelCount > 0 Then
cmdArrows(0).Enabled = True ' > Button
End If
End If
If lstLists(1).ListCount > 0 Then
cmdArrows(3).Enabled = True ' << Button
If lstLists(1).SelCount > 0 Then
cmdArrows(2).Enabled = True ' < Button
End If
End If
End Sub
Private Sub lstLists_DblClick(Index As Integer)
Select Case Index
Case 0
cmdArrows_Click (0) ' > Button
Case 1
cmdArrows_Click (2) ' < Button
End Select
End Sub