c++ - Accessing Class Data from Declared Struct -

OK, so I've tried a few ways to deal with this issue, but I'm unable to fix it .

I have in my header file:

  class MyClass {public: bool test; Straight Mistrate; };   
 I also have a constructor and that is all, but this is not important / is not causing errors  
 What I want to do in CPP is this:    MyClass :: MyStruct {test = true; };   
 With this problem, it is that the structure is unable to reach the test variable. How can I do the variable of the current instance of the struct or allow the structure to reach the variable in some other way?  
 
 I think if the Mystreet code is executing then it should be a class. And if so, you either pass an example of this MyClass (like  this  if calling from MyClass), or pass it to the reference of the member that is required ( Such as  this-> test ) ...