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Empty Context Menu

I have a context menu attached to a tree with just one item. For some nodes of the tree I want to disable the menu item so I created a function which assigned to the tree using the setOnShowMenuHandler function. The function looks like:

function setTreeContextMenuItems(itemId) {
var somedata = getSomeData(itemId);
if (somedata == "dont show") {
// Still shows an empty menu.
theTreeContextMenu.menu.hideButtons();
} else {
theTreeContextMenu.menu.showButtons("removeNode");
}
}

If the hideButtons function is called, I see an empty box with no menu selections. What I want to do is not display any menu in this case. I tried replacing the hide and show buttons function calls with disableMenu (true and false) but the menu could not be restored once it was disabled.

How can I hide this one item menu without showing an empty box when I want the item disabled?

Paul

>>I want to do is not display any menu
Just return false from event handler to block menu

function setTreeContextMenuItems(itemId) { 
var somedata = getSomeData(itemId); 
if (somedata == "dont show") { 
     return false; //block menu
} else { 
     return true; // allow menu
} 
}

Ok, thanks.