Error c2352 in MSVC6

Hello,

I am new to C++ and VS but have written a few programs in c before.

When I try to compile a single dialog (Form) application I get
"error C2352: 'CUserinfo3App::WriteCancelled' : illegal call of non-static
member function"

I trying to call a function in a class derived from CWinApp from another
class.

Some MSKB articles say this is a bug which goes back to VC++4 but I'm I
running VC6 with SP5.
Surely this bug must have been fixed by now! or am I just making a mistake?
(I suspect I am)

Any help or pointers appreciated as I'm kinda stuck.

P..

Can you post the section of code that the error refers to?

void CUserinfo3App::WriteCancelled()
{

CUserinfo3App::SetRegistryKey("SomeCompany") ; error here
CUSerinfo3App::WriteProfileString ("LastResult", "Operation", "Cancelled By User") ; error here

char CancelTitle[] = "FYI";
MessageBox( NULL, CancelText, CancelTitle, MB_OK);
}

CUser3App was derived from CWinApp as public

P..

Sorry for stating the obvious, but is CUserinfo3App::WriteCancelled declared as a static member function?

Tried it as static as well.

Replacing CUserinfo3App::WriteCancelled() with CWinApp::WriteCancelled yields the same error.

making SetRegistryKey & WriteProfileString static in AFXWIN.H removes the error but then I get unresolved symbol errors instead..

P...

Tried it as static as well.

It shouldn't be declared static if it's calling non-static member functions. You can call static member functions with non-static functions but not the other way around. Check the declaration in your header file.

Also, it's probably not a good idea to mess around with the headers that come with your compiler.

Just experimenting with the header file to see if it could be fixed..

I have tryed fixing this problem every way I can can think of without sucess.

P..

What does your CUserinfo3App declaration look like?

class CUserinfo3App : public CWinApp
{
public:
static void WriteCancelled();

CUserinfo3App();

Remove the static specifier, that's the cause of your problems.

Tryed that does,nt work. the two registry functions i need are not defined as static in AFXWIN.H.


P..

They don't have to be. What error message do you get when making CUserinfo3App::WriteCancelled() non-static.

The same C2352 error.

p.

From where in your code are you calling the WriteCancelled() method? Do you have any other static member functions anywhere?

error C2352: 'CUserinfo3App::WriteCancelled' : illegal call of non-static member function

WriteCancelled is a non-static member function. You cannot call it this way: 'CUserinfo3App::WriteCancelled()'. You have to call it on an object like 'myObject.WriteCancelled();'. Only static member functions can be called without an object.
I'm not sure if the functions you called are static. However, loosing the CUserinfo3App:: specifier could help, as this would work for both versions. Don't ever mess with the compilers files. Leave AFXWIN.H as it is.

If CancelText is defined elsewhere, this should work:

PHP Code:

void CUserinfo3App::WriteCancelled() 
{ 
    SetRegistryKey("SomeCompany") ; error here 
    WriteProfileString ("LastResult", "Operation", "Cancelled By User") ;

    MessageBox( NULL, CancelText, "FYI", MB_OK); 
}