IsEventHandlerAdded
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This function checks added event or not.
Syntax
bool isEventHandlerAdded( string eventName, element attachedTo, function handlerFunction )
Required Arguments
- eventName: The name of the event you want to attach the handler function to.
- attachedTo: The element you wish to attach the handler to. The handler will only be called when the event it is attached to is triggered for this element, or one of its children. Often, this can be the root element (meaning the handler will be called when the event is triggered for any element).
- handlerFunction: The handler function you wish to call when the event is triggered. This function will be passed all of the event's parameters as arguments, but it isn't required that it takes all of them.
Returns
Returns true if the event handler was attached to this function. Returns false if the specified event could not be found or any parameters were invalid.
Code
Click to collapse [-]
Function sourcefunction isEventHandlerAdded( sEventName, pElementAttachedTo, func ) if type( sEventName ) == 'string' and isElement( pElementAttachedTo ) and type( func ) == 'function' then local aAttachedFunctions = getEventHandlers( sEventName, pElementAttachedTo ) if type( aAttachedFunctions ) == 'table' and #aAttachedFunctions > 0 then for i, v in ipairs( aAttachedFunctions ) do if v == func then return true end end end end return false end
Example
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ClientThis is an example of the function.
bindKey ("num_2", "down", function() if not isEventHandlerAdded( 'onClientRender', root, open) then addEventHandler ("onClientRender", root, open) end end)
By nL~Enzo