C++ 非法引用非静态成员
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illegal reference to non-static member
提问by karikari
I am trying to refer to a cstring mycustompathfrom a different class from my current class.
我试图mycustompath从我当前的班级引用不同班级的 cstring 。
CString test = CBar::mycustompath + _T("executables\IECapt");
But I got this error instead:
但我得到了这个错误：
error C2597: illegal reference to non-static member 'CBar::mycustompath' c:\work\b.cpp 14
错误 C2597：非法引用非静态成员“CBar::mycustompath”c:\work\b.cpp 14
How to fix this?
如何解决这个问题？
回答by Rup
This means that mycustompath is a property of a specific CBar object and not a property of the CBar class. You'll need to instantiate a CBar class
这意味着 mycustompath 是特定 CBar 对象的属性，而不是 CBar 类的属性。你需要实例化一个 CBar 类
CBar* myBar = new CBar();
CString test = myBar->mycustompath + _T("executables\IECapt");
or reference one you already have or, if mycustompath doesn't vary by CBar object, you can change it to static in the class:
或引用您已经拥有的一个，或者，如果 mycustompath 不因 CBar 对象而异，您可以在类中将其更改为静态：
class CBar
{
public:
static CString mycustompath;
}
回答by Bj?rn Pollex
This indicates that CBar::mycustompathis not a static member variable of CBar. You will have to create an instance of CBarto access it:
这表明CBar::mycustompath不是 的静态成员变量CBar。您必须创建一个实例CBar才能访问它：
CBar bar;
CString test = bar.mycustompath + _T("executables\IECapt");
