# Tracking the mouse in a list box

I'd like to be able to set the tooltip of a list box based on the entry the mouse is over a list box. Can anyone tell me how this can be accomplished ?

Thanks !
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Middle School Assistant TeacherCommented:
Option Explicit

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

Dim i As Integer

For i = 1 To 10
Next
End Sub

Private Sub List1_MouseMove(Button As Integer, Shift As Integer, X As Single, Y As Single)
Dim idx As Integer
idx = ListRowCalc(List1, Y)
List1.ToolTipText = List1.List(idx)
End Sub

Private Function ListRowCalc(lstTemp As Control, ByVal Y As Single) As Integer
Const LB_GETITEMHEIGHT = &H1A1

Dim ItemHeight As Integer
ItemHeight = SendMessage(lstTemp.hWnd, LB_GETITEMHEIGHT, 0, 0)
ListRowCalc = min(((Y / Screen.TwipsPerPixelY) \ ItemHeight) + _
lstTemp.TopIndex, lstTemp.ListCount - 1)
End Function

Private Function min(X As Integer, Y As Integer) As Integer
If X > Y Then min = Y Else min = X
End Function
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RetiredCommented:
ListBox1.Tooltip = "My tooltip"
This seems too simple, so I may have misunderstood
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RetiredCommented:
Yes. It was too simple. I had misunderstood.
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Founder, InitQubeCommented:
Private Sub List1_MouseMove()
List1.ToolTip = "ToolTip Text here"
End Sub
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Visual Basic Classic

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