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handling the events for icons in treeview differently than the node events

Posted on 2008-10-03
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Last Modified: 2013-12-26
I have a treeview control with folder icons at the non-leaf levels to show whether the node is expanded or not.

Is it possible to change the mouse cursor if it points to the icon vs when it points to the text in the node, and in addition, how (if at all) could i expand/collapse the node when the icon is single clicked, but not when the nodetext is selected?
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Question by:kismokus13
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danaseaman earned 500 total points
ID: 22638970
It is doable but requires subclassing the control and advanced knowledge of API.
When a HitTest is performed in NM_CLICK message you can analyse the item flags to see where the user clicked and then perform the appropriate action.

' hit testing codes
Private Const TVHT_NOWHERE = &H1
Private Const TVHT_ONITEMICON = &H2
Private Const TVHT_ONITEMLABEL = &H4
Private Const TVHT_ONITEMINDENT = &H8
Private Const TVHT_ONITEMBUTTON = &H10
Private Const TVHT_ONITEMRIGHT = &H20
Private Const TVHT_ONITEMSTATEICON = &H40
Private Const TVHT_ONITEM = (TVHT_ONITEMICON Or TVHT_ONITEMLABEL Or TVHT_ONITEMSTATEICON)

Private Const TVHT_ABOVE = &H100
Private Const TVHT_BELOW = &H200
Private Const TVHT_TORIGHT = &H400
Private Const TVHT_TOLEFT = &H800


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