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Tip of the Day
Language: VB5,VB6
Expertise: Intermediate
Jul 1, 2000

Determine the number of visible items in a ListView control

Microsoft "forgot" to provide the ListView control with the GetVisibleCount property, as it did, for example, with the TreeView control. However, getting this information is as easy as sending a message to the control:

Private Const LVM_FIRST = &H1000
Private Const LVM_GETCOUNTPERPAGE = (LVM_FIRST + 40)
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

' Return the number of visible items in a ListView control

Private Function ListViewGetVisibleCount(LV As ListView) As Long
   ListViewGetVisibleCount = SendMessage(LV.hwnd, LVM_GETCOUNTPERPAGE, 0&, _
       ByVal 0&)
End Function

Francesco Balena
 
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