A object generated classes such as class A, B, and class B generated in the class C, D, E,

Want to call the class A method in the class E, or notify A

So there are several kinds of method? These classes are not window

CodePudding user response:

The easy way is A class defines A message and A corresponding message processing function, and other places need to transfer data to A direct when you send A message

CodePudding user response:

reference 1st floor lx624909677 response:

the easy way is A class defines A message and A corresponding message processing function, and other places need to transfer data to A direct send A message over things

SendMessage? If these classes are in the DLL, send a message handler is not depends on the window?

CodePudding user response:

By generating object, the constructor parameters passed in the corresponding object, so passed

CodePudding user response:

reference oyljerry reply: 3/f

by generating object, the constructor argument passed in the corresponding object, so on the

This is a way

CodePudding user response:

Use of global variables

CodePudding user response:

refer to the second floor candy04502 response:

Quote: refer to 1st floor lx624909677 response:

The easy way is A class defines A message and A corresponding message processing function, and other places need to transfer data to A direct send A message over things

SendMessage? If these classes are in the DLL, send a message handler is not depends on the window?

If just call one of A method, can make A friend, if must get A generated class object is the most, then use function parameters

CodePudding user response:

A method of A class as static

CodePudding user response:

In class E want to invoke the method of class A, class E to get A pointer to the class A object, then calls the class A member function,
E how to get A pointer, which can be through the constructor or class member functions E passed in, also can save A pointer to A global variable or class static members,
A low coupling approach is to use the function/bind, class E to get the class A object after the bind the fuction of object, make calls again, can be lifted and dependence between class A and class E correlation,