BindGadgetEvent()

Syntax

BindGadgetEvent(#Gadget, @Callback() [, EventType])
Description
Bind a gadget event to a callback. It allows to have real-time event notifications as the callback can be invoked as soon as the event occurs (useful for ScrollAreaGadget() etc.). A gadget event can be unbinded with UnbindGadgetEvent().

Parameters

#Gadget The gadget to bind the event to.
@Callback() The callback procedure to call when the event occurs. It has to be declared like this: 
  Procedure EventHandler()
    ; Code
  EndProcedure
Regular functions like EventGadget(), EventWindow(), EventMenu(), EventType() and EventData() are available within the callback to get more information about the event.
EventType (optional) The event type to bind the event to. For a full list of supported types, see EventType(). #PB_All can be used to bind the event to any type.

Return value

None.

Example

  Procedure ButtonHandler()
    Debug "Button click event on gadget #" + EventGadget()
  EndProcedure
  
  OpenWindow(0, 100, 100, 200, 50, "Click test", #PB_Window_SystemMenu)
    ButtonGadget(0, 10, 10, 180, 30, "Click me")
  
  BindGadgetEvent(0, @ButtonHandler())

See Also

BindGadgetEvent(), BindMenuEvent(), UnbindEvent()

Supported OS

All

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