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TreeView QuestionDear all,
is it possible to implement a tree node so that double click on the tree node does some operation and double click on "+" of this tree node only expands tree without doing this operation. Unfortunately I only know GetNodeAT(x,y), which don't differentiate "+" from the node. Thanks in advance for your help. Boni It is something like:
Protected Overrides Sub OnDoubleClick(ByVal e As System.EventArgs) If SelectedNode.GetType() Is GetType(TreeNode) Then CType(SelectedNode, TreeNode).Open() End If End Sub Public Sub Open() System.Diagnostics.Process.Start([Node Name Here]) End Sub ------------------- The above code is out of a control I created that extends the TreeView. The '[Node Name Here]' is obviously the selected node name You'll have to play around with the code slightly, but it should give you a general idea. Crouchie1998 BA (HONS) MCP MCSE There is no easy way to differentiate the "+" from the remaining zone, but
anyway the "+" requires only a single click, not a double click. The code below shows how to override the WM_LBUTTONDBLCLK event: Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) Const WM_LBUTTONDBLCLK As Integer = &H203 Dim bHandled As Boolean = False Select Case m.Msg Case WM_LBUTTONDBLCLK Me.OnDoubleClick(EventArgs.Empty) bHandled = True End Select If Not bHandled Then MyBase.WndProc(m) End If End Sub -- Show quoteHide quoteBest regards, Carlos J. Quintero MZ-Tools: Productivity add-ins for Visual Studio .NET, VB6, VB5 and VBA You can code, design and document much faster. Free resources for add-in developers: http://www.mztools.com "Boni" <oilia@nospam> escribió en el mensaje news:enOD%23KIfFHA.3960@TK2MSFTNGP14.phx.gbl... > Dear all, > > is it possible to implement a tree node so that double click on the tree > node does some operation and double click on "+" of this tree node only > expands tree without doing this operation. Unfortunately I only know > GetNodeAT(x,y), which don't differentiate "+" from the node. > > Thanks in advance for your help. > > Boni > > > > Dear Carlos,
I am sorry, but I don't understand how to use your code. As you wrote, I do need a double click for a "remaining zone", but only a single click for +. Thanks a lot, Boni Show quoteHide quote "Carlos J. Quintero [.NET MVP]" <carlosq@NOSPAMsogecable.com> schrieb im Newsbeitrag news:OOnkLeIfFHA.2384@TK2MSFTNGP15.phx.gbl... > There is no easy way to differentiate the "+" from the remaining zone, but > anyway the "+" requires only a single click, not a double click. The code > below shows how to override the WM_LBUTTONDBLCLK event: > > Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message) > > Const WM_LBUTTONDBLCLK As Integer = &H203 > > Dim bHandled As Boolean = False > > Select Case m.Msg > > Case WM_LBUTTONDBLCLK > Me.OnDoubleClick(EventArgs.Empty) > bHandled = True > > End Select > > If Not bHandled Then > MyBase.WndProc(m) > End If > > End Sub > > > -- > Best regards, > > Carlos J. Quintero > > MZ-Tools: Productivity add-ins for Visual Studio .NET, VB6, VB5 and VBA > You can code, design and document much faster. > Free resources for add-in developers: > http://www.mztools.com > > "Boni" <oilia@nospam> escribió en el mensaje > news:enOD%23KIfFHA.3960@TK2MSFTNGP14.phx.gbl... >> Dear all, >> >> is it possible to implement a tree node so that double click on the tree >> node does some operation and double click on "+" of this tree node only >> expands tree without doing this operation. Unfortunately I only know >> GetNodeAT(x,y), which don't differentiate "+" from the node. >> >> Thanks in advance for your help. >> >> Boni >> >> >> >> > > You must derive a class TreeViewEx from Treeview and put that code inside.
What I meant is that since "+" requires only a single click, likely users won´t double-click on that zone, you I would not worry about that, but if you really want, the TVM_HITTEST message will tell you: http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/treeview/messages/tvm_hittest.asp -- Show quoteHide quoteBest regards, Carlos J. Quintero MZ-Tools: Productivity add-ins for Visual Studio .NET, VB6, VB5 and VBA You can code, design and document much faster. Free resources for add-in developers: http://www.mztools.com "Boni" <oilia@nospam> escribió en el mensaje news:usxhiOJfFHA.3944@TK2MSFTNGP10.phx.gbl... > Dear Carlos, > I am sorry, but I don't understand how to use your code. > As you wrote, I do need a double click for a "remaining zone", but only a > single click for +. > Thanks a lot, > Boni Dear Carlos, Dear Crouchie1998,
Thank you, Show quoteHide quote "Boni" <oilia@nospam> schrieb im Newsbeitrag news:enOD%23KIfFHA.3960@TK2MSFTNGP14.phx.gbl... > Dear all, > > is it possible to implement a tree node so that double click on the tree > node does some operation and double click on "+" of this tree node only > expands tree without doing this operation. Unfortunately I only know > GetNodeAT(x,y), which don't differentiate "+" from the node. > > Thanks in advance for your help. > > Boni > > > > 
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