In Qt, when hope in a class, use the one in the class, in the QString a variable's value, how to define?
Such as in 1. CPP want to display the interface 2. CPP QString a to the value of this variable,
Thank you
CodePudding user response:
This is the basis of C/C + + language itself,A.h
# pragma once
Class A {
Public:
A () {}
Const int v () {return m_v; }
Void setV (const int v) {m_v=v; }
Protected:
Int m_v=0;
};
B.h
# pragma once
Class A;
Class B {
Public:
Void fun (A * pA);
};
The biggest pp
# include "B.h
"# include "A.h
"#include
Void B: : fun (A * pA)
{
STD: : cout}