nana::dragdrop Class Reference

Classes
class	data
struct	implementation

Public Member Functions
	dragdrop (window source)
	~dragdrop ()
void	condition (std::function< bool()> predicate_fn)
	Condition checker. More...
void	prepare_data (std::function< data()> generator)
	Transferred data. More...
void	drop_finished (std::function< void(bool dropped, dnd_action executed_action, data &data_transferred)> finish_fn)
	Drop handler. More...

Constructor & Destructor Documentation

nana::dragdrop::dragdrop

(

window

source

)

nana::dragdrop::~dragdrop

(

)

Member Function Documentation

void nana::dragdrop::condition

(

std::function< bool()>

predicate_fn

)

Condition checker.

void nana::dragdrop::drop_finished

(

std::function< void(bool dropped, dnd_action executed_action, data &data_transferred)>

finish_fn

)

Drop handler.

The drop handler is called when the drop operation is completed. There are 3 parameters for the handler dropped Indicates whether the data is accepted by a target window. executed_action Indicates the action returned by target window. Ignore if dropped is false. data_transferred The data object which is generated by the generator.

Parameters

finish_fn

The drop handling function.

void nana::dragdrop::prepare_data

(

std::function< data()>

generator

)

Transferred data.

Set a data generator. When drag begins, it is called to generate a data object for transferring.

Parameters

generator

It returns the data for transferring.