s="kt">Bool</span><span class="p">,</span> <span class="nv">buttonId</span><span class="p">:</span> <span class="kt">UInt16</span><span class="p">,</span> <span class="nv">systemAction</span><span class="p">:</span> <span class="kt"><a href="../Type%20Definitions.html#/c:SDLSystemAction.h@T@SDLSystemAction">SDLSystemAction</a></span><span class="p">?,</span> <span class="nv">handler</span><span class="p">:</span> <span class="kt"><a href="../Type%20Definitions.html#/c:SDLNotificationConstants.h@T@SDLRPCButt