How to Run form on button click

On button click write this code:

void clicked()
{
    first first2;
     Args                args;
    FormRun           formRun;
    MenuFunction  menuFunction;
;
     args = new Args();
    if(first.number == "12")
    {
        menuFunction = new MenuFunction(menuitemdisplaystr("Second"), MenuItemType::Display);
    }
    else if(first.number == "11")
    {
        menuFunction = new MenuFunction(menuitemdisplaystr("as"), MenuItemType::Display);
    }
    menuFunction.run(args);
    super();
}