How to display a seperate right click menu for each item of a tree control?

Question

Hi I want to display a specific right click menu when a particular tree item is selected. I know how to create a menu and how to display it. I am using the function GetLabelFromIndex() to get the active tree item and then compare the label and based on the result display a manu for that item. Now my problem is that when I use the above function in the EVENT_RIGHT_CLICK it gives me the error "the Index passed is out of range" while using the same function with the same arguments in EVENT_SELECTION_CHANGE it gives no error...below is the part of my code
case EVENT_RIGHT_CLICK:
GetLabelFromIndex(panelHandle, PANEL_TREE, eventData2, label1);
//The function gives the stated error here
if(eventData1)//after it I compare the result and display the menu
case EVENT_SELECTION_CHANGE:
GetLabelFromIndex (panelHandle, PANEL_TREE, eventData2, label1);
//The function works fine here
if (eventData1)
 If any one have any idea whats going on or alternate way of doing this Please share knowledge...Thanks
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Answer 1

Hi,
one possible approach of solving this problem is looking closer at the error message: The error "the Index passed is out of range" tells you that something is wrong with the index, either it is too small or too large So why don't you set a breakpoint and check the index value, it might be useful information...
The other hint is to check the meaning of eventdata2 (using the help): It is different for different events! For the event_right_click it gives the horizontal mouse position, not the index as event_selection_change does...