invoke method of ui

Question

if (b->InvokeRequired) {
    FuncDelegat^ as = gcnew FuncDelegat(funct1);
    b->Invoke(as,nullptr);
    return;
}

Why that code may not the call function funct1

Answer 1

funct1 is not called if InvokeRequired returns false. Correct way:

    if (b->InvokeRequired) 
    {
        FuncDelegat^ as = gcnew FuncDelegat(funct1);
        b->Invoke(as,nullptr);
    }
    else
    {
        b->funct1(nullptr);
    }
    return;