Wow twice!!! ..I never gave the right attention to SEEK function... Cool one... Mostly on mult-task environment...

Your solution for check/uncheck works fine... But... so many functions for so simple task... If we still had the possibility for vfp10... Maybe this will be inserted on the wish-list.

The expression of: "toNode.Checked = !toNode.Checked=.t." was only that tries on faith on the impossible things.. Originally was written as your advice...

Makes me recall that phrase: "exhausted all logic possibilities makes the first option illogical the more reasonable to use".

Thank you great Sergey...

Cláudio

>You cannot uncheck checkbox from within of a treeview. See Treeview - programmatically UNcheck a mouse-checked node Message #731673
>
>Also there's no need to make code more complicated that it should be.
>

>* This convoluted expression
>toNode.Checked = !toNode.Checked=.t.
>* Is the same as simple
>toNode.Checked = !toNode.Checked
>

>

>	Select mytableA
>	Set Order To client_id
>	Seek toNode.Tag
>	If  Found() ...
>* can be shortened to
>	If SEEK(toNode.Tag, "mytableA", "client_id") ...
><pre>
>
>>
>>at mytreeview.nodecheck method I'm trying to:<pre>*** ActiveX Control Event ***
>>Lparameters toNode
>>This.SelectedItem = toNode
>>If  Empty(toNode.Tag)
>>	Thisform.actionrecursive_in_child( toNode )
>>Else
>>	Select mytableA
>>	Set Order To client_id
>>	Seek toNode.Tag
>>	If  Found() and !Empty(clients.email)
>>	    toNode.Checked = !toNode.Checked=.t. && seems doing fine
>>	Else
>>        	    toNode.Checked = .f.   && here is the point... uncheck fine here.
>>	    *This.SelectedItem.Checked = .f.
>>	*   ?? CHR(07)
>>	*   ThisForm.Container1.Text10.SetFocus()
>>	*	NODEFAULT 
>>                *	RETURN .f.
>>	Endif
>>Endif
>>

>>
>>My goal is about to doesn't allow the user check items with empty field of client's email...
>>
>>So, if I Follow this code with debug... it run and does fine what I'm trying to do... But after notecheck method it becomes checked again with no logic reason.
>>
>>Is there a way, on treeview, to allow check only in some sort of data??
>>
>>TIATOALL
>>
>>Claudio