error C2039: 'IsDirectory' : is not a member of 'FILE_'

[h4ever]

I need help with this:

class FILE_ {
public:
    FILE_();
	static int GetEncoderClsid(
			const WCHAR* format, 
		CLSID* pClsid);

	static int findFiles(char * path);

	int isDirectory(std::string path, char * workingPath);

	static int getDir(const char *fullPath, char *dir);
	
	static void addDirectory(const char *dir, char * & toDir);
};

Singleton:

/* Meyers Singleton */
class S
{
public:
    static S& I(); // instance

	STAT Stat;
	
    std::vector<SRC> sources;
	std::vector<TARGET> destination;
	CLParser CLPars;
	FILE_ File;

private:
    S();
    S(const S&);
    ~S();
	S& operator= (const S&);
    struct Params
    {
        int argc;
        char** argv;
    };
	static Params* param;
};

Then I call function to check directory:

if (S::I().File.IsDirectory(arg, S::I().Stat.workingPath)) {

And in in Visual Studio I got error:

1>CLParser.cpp(24): error C2039: 'IsDirectory' : is not a member of 'FILE_'
1>          w:\parse4\parse4\filework.h(1) : see declaration of 'FILE_'

Why is this and how to remove the error?

[Disch]

Your function is called isDirectory (lowercase i).

You are attempting to call IsDirectory (uppercase I)

[h4ever]

Thanks.