Device.connectToolChanged

gulong connectToolChanged(T)(T callback,  Flag!"After" after =  No.After) if (isCallable!T
    &&  is(ReturnType!T ==  void)
   && (Parameters!T.length <  1 || (ParameterStorageClassTuple!T[0]  ==  ParameterStorageClass.none &&  is(Parameters!T[0] :  gdk.device_tool.DeviceTool)))
   && (Parameters!T.length <  2 || (ParameterStorageClassTuple!T[1]  ==  ParameterStorageClass.none &&  is(Parameters!T[1] :  gdk.device.Device)))
   &&  Parameters!T.length <  3)

Connect to ToolChanged signal.

The ::tool-changed signal is emitted on pen/eraser #GdkDevices whenever tools enter or leave proximity.

Parameters

`callback`	signal callback delegate or function to connect `void callback(gdk.device_tool.DeviceTool tool, gdk.device.Device device)` `tool` The new current tool (optional) `device` the instance the signal is connected to (optional)
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID