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Tip of the Day
Language: VB4/32,VB5,VB6
Expertise: Intermediate
Sep 18, 1999

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Get or Set the height of TreeView nodes

In plain VB there is no way to determine or change the height of node elements in a TreeView control. All you need to accomplish both tasks, however, is send the right message to the control.

Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal _
    hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, _
    lParam As Any) As Long

Private Const TV_FIRST = &H1100
Private Const TVM_SETITEMHEIGHT = (TV_FIRST + 27)
Private Const TVM_GETITEMHEIGHT = (TV_FIRST + 28)

' return the height of a TreeView's individual items
NodeHeight = SendMessage(TreeView1.hWnd, TVM_GETITEMHEIGHT, 0, ByVal 0&)

' set the height of a TreeView's individual items
' use the value -1 to restore default height
SendMessage TreeView1.hWnd, TVM_SETITEMHEIGHT, newNodeHeight, ByVal 0&
Francesco Balena
 
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