Microsoft KB Archive/172057

Knowledge Base

FIX: CreateDragImage Method in ListView Uses Wrong Icon

Article ID: 172057

Article Last Modified on 11/5/2003

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APPLIES TO

• Microsoft Visual Basic 5.0 Professional Edition
• Microsoft Visual Basic 5.0 Enterprise Edition

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This article was previously published under Q172057

SYMPTOMS

When dragging a selection from the ListView control, the icon for the first item in the list is displayed during the drag operation. This problem occurs when the CreateDragImage method is used.

RESOLUTION

To work around this problem, it is necessary to extract the correct icon from the image list that provides the icons for the ListView. For example, if the original line of code reads:

   ListView1.DragIcon = ListView1.SelectedItem.CreateDragImage
                

change it to read:

   ListView1.DragIcon= _
   ImageList1.ListImages(ListView1.SelectedItem.Index).ExtractIcon
                

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been fixed in Visual Basic 6.0.

MORE INFORMATION

Steps to Reproduce Behavior

1. Create a new "Standard EXE" project.
2. On the default form, place an ImageList, a ListView, and a label.
3. Set the View property of the ListView control to "2-lvwList."

4. Place the following code in the Forms module:

      Dim itmX As ListItem
   
      Private Sub Form_Load()
      Dim i As Integer
      ListView1.Icons = ImageList1
      ListView1.SmallIcons = ImageList1
      For i = 1 To 4
         Set itmX = ListView1.ListItems.Add(i, , "List item " + Str(i), i, i)
      Next
      End Sub
   
      Private Sub ListView1_MouseDown(Button As Integer, Shift As Integer, _
         x As Single, y As Single)
      Set itmX = ListView1.SelectedItem ' Set the item being dragged.
      End Sub
   
      Private Sub listView1_MouseMove(Button As Integer, Shift As Integer, _
         x As Single, y As Single)
      If Button = vbLeftButton Then ' Signal a Drag operation.
         Label1.Caption = ListView1.SelectedItem 'Check which item is selected
         ListView1.DragIcon = ListView1.SelectedItem.CreateDragImage
         'workaround
         'ListView1.DragIcon = _
         '  ImageList1.ListImages(ListView1.SelectedItem.Index).ExtractIcon
         ListView1.Drag vbBeginDrag ' Drag operation.
     End If
     End Sub
                           

5. Run the project.
6. Drag a selection from the ListView. Note that the icon used for the drag operation is always the first icon in the ListView control.

Additional query words: kbVBp500bug kbVBp600fix kbVBp kbdsd kbDSupport kbControl kbCreate

Keywords: kbbug kbfix KB172057

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