C++ 如何调用另一个类的静态方法
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How do I call a static method of another class
提问by Simsons
I have a class, lets say CAppPathwhich has a static method:
我有一个类，让我们说它CAppPath有一个静态方法：
public:
static CString GetAppPath();
and in CAppPath.cppit's defined as:
并在CAppPath.cpp其中定义为：
CString CAppPath::GetAppPath()
{
return "C:\..\MypAth";
}
Now I have another class CXMLHandler, and I have included CAppPath.hin it. But how do I call the GetAppPath()method? I've tried:
现在我有另一个类CXMLHandler，我已经包含CAppPath.h在其中。但是我如何调用该GetAppPath()方法？我试过了：
#include "CAppPath.h"
void CXMLHandler::MyMethod
{
CNDSClientDlg->GetAppPath();
}
but it doesn't work. How should I access this method? Since it is a static method, do I need to create a object of the class or should I make the class itself static?
但它不起作用。我应该如何访问这个方法？由于它是一个静态方法，我是否需要创建类的对象还是应该使类本身成为静态的？
回答by Frédéric Hamidi
You only need to use the scope resolution operator::to qualify the method with the name of the class that exposes it:
您只需要使用范围解析运算符::来限定具有公开它的类的名称的方法：
CString appPath = CAppPath::GetAppPath();
