TreeNode.connectNodeHasChildToggled

gulong connectNodeHasChildToggled(T)(T callback,  Flag!"After" after =  No.After) if (isCallable!T
    &&  is(ReturnType!T ==  void)
   && (Parameters!T.length <  1 || (ParameterStorageClassTuple!T[0]  ==  ParameterStorageClass.none &&  is(Parameters!T[0] :  gda.tree_node.TreeNode)))
   && (Parameters!T.length <  2 || (ParameterStorageClassTuple!T[1]  ==  ParameterStorageClass.none &&  is(Parameters!T[1] :  gda.tree_node.TreeNode)))
   &&  Parameters!T.length <  3)

Connect to NodeHasChildToggled signal.

Gets emitted when a node has has a child when it did not have any or when it does not have a ny children anymore when it had some

Parameters

`callback`	signal callback delegate or function to connect `void callback(gda.tree_node.TreeNode node, gda.tree_node.TreeNode treeNode)` `node` the #GdaTreeNode which changed from having children to being a leaf or the other way around (optional) `treeNode` the instance the signal is connected to (optional)
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID