Pass an argument to task in C++/CLI?

Question

I have this code for the C# in Visual Studio 2012.

public Task SwitchLaserAsync(bool on)
{
   return Task.Run(new Action(() => SwitchLaser(on)));
}

This will execute SwitchLaser method (public nonstatic member of a class MyClass) as a task with argument bool on.

I would like to do something similar in managed C++/CLI. But I am not able to find out any way how to run a task, which will execute a member method taking one parameter.

Current solution is like this:

Task^ MyClass::SwitchLaserAsync( bool on )
{
    laserOn = on;   //member bool 
    return Task::Run(gcnew Action(this, &MyClass::SwitchLaserHelper));
}

Implementation of SwitchLaserHelper function:

void MyClass::SwitchLaserHelper()
{
     SwitchLaser(laserOn);
}

There must be some solution like in C# and not to create helper functions and members (this is not threadsafe).

Answer 1

Here's the working answer.. Have tested it.. Passing an argument (int) to the action sampleFunction.

#include "stdafx.h"
#include "CLRSamples.h"

using namespace System;
using namespace System::Threading;
using namespace System::Threading::Tasks;
using namespace System::Collections;
using namespace System::Collections::Generic;

void CLRSamples::sampleFunction(Object^ number)
{
    Console::WriteLine(number->ToString());
    Thread::Sleep((int)number * 100);
}

void CLRSamples::testTasks()
{
    List<Task^>^ tasks = gcnew List<Task^>();

    for (int i = 0; i < 10; i++)
    {
        tasks->Add(Task::Factory->StartNew((Action<Object^>^)(gcnew Action<Object^>(this, &CLRSamples::sampleFunction)), i));
    }

    Task::WaitAll(tasks->ToArray());

    Console::WriteLine("Completed...");
}

int main(array<System::String ^> ^args)
{
    CLRSamples^ samples = gcnew CLRSamples();
    samples->testTasks();

    Console::Read();
    return 0;
}