Command.select Event

This even fires when the user selects an entity. This is different from the preselect where an entity is shown as being available for selection as the mouse passes over the entity. This is the actual selection where the user has clicked the mouse on the entity.

The entity and mouse position on the entity can be obtained through the Selection object returned through the selection property of the SelectionEventArgs object provided through the event.

Python Using fusion360utils
Python
C++

-------- Import ---------

# Import fusion360utils folder, which includes event_utils.py.
from ...lib import fusion360utils as futil

-------- Global variables ---------

# Global variable used to maintain a reference to all event handlers.
local_handlers = []

-------- Connect the handler to the event. ---------

# "command_var" is a variable referencing a Command object.
# "command_select" is the event handler function.
futil.add_handler(command_var.select, command_select, local_handlers=local_handlers)

-------- Event handler function definition ---------

# Event handler for the select event.
def command_select(args: adsk.core.SelectionEventArgs):
    # Code to react to the event.
    app.log('In command_select event handler.')

-------- Global variables ---------

# Global variable used to maintain a reference to all event handlers.
handlers = []

-------- Connect the handler to the event. ---------

# "command_var" is a variable referencing a Command object.
# "MySelectHandler" is the name of the class that handles the event.
onSelect = MySelectHandler()
command_var.select.add(onSelect)
handlers.append(onSelect)

-------- Event handler class definition ---------

# Event handler for the select event.
class MySelectHandler(adsk.core.SelectionEventHandler):
    def __init__(self):
        super().__init__()
    def notify(self, args: adsk.core.SelectionEventArgs):
        # Code to react to the event.
        app.log('In MySelectHandler event handler.')

--------- Required include files. ---------

#include <Core/UserInterface/Command.h>
#include <Core/UserInterface/SelectionEvent.h>
#include <Core/UserInterface/SelectionEventHandler.h>
#include <Core/UserInterface/SelectionEventArgs.h>

--------- Event handler class definition and global declaration. ---------

// Event handler for the select event.
class MySelectEventHandler : public adsk::core::SelectionEventHandler
{
public:
    void notify(const Ptr<SelectionEventArgs>& eventArgs) override
    {
        // Code to react to the event.
        ui->messageBox("In MySelectEventHandler event handler.");
    }
} _select;

--------- Connect the handler to the event. ---------

// "command_var" is a variable referencing a Command object.
// Connect the handler function to the event.
Ptr<SelectionEvent> selectEvent = command_var->select();
if (!selectEvent)
    return;

bool isOk = selectEvent->add(&_select);
if (!isOk)
    return;

Name	Description
Selection Events API Sample	The sample demos how to use selection events of a command.

Command.select Event

Description

Syntax

Property Value

Samples

Version