switch quantity not integer?

I am trying to make a Windows app, but I have a problem. When I try to compile it, it gives me error "switch quantity not integer". I have defined it, but still it doesn't work. I'm making it with Dev-C++. Here's source code of function with problem:

Code:

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LRESULT CALLBACK ViestinKasittelija( HWND hWnd,
                                    UINT Viesti,
                                    WPARAM wParam,
                                    LPARAM lParam)
{
    switch(viesti) {
            case WM_DESTROY:
                  {
                              PostQuitMessage( 0 );
                              return TRUE;
                              break;
                              }
                  }
    return DefWindowProc( hWnd, Viesti, wParam, lParam );

}

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If someone needs to see whole source I can put it here.

I posted this here, because I think this has nothing to do with making Windows-apps. But if someone thinks this belongs to Windows-forum, move this.

C is case-sensitive. You have "Viesti" in your parameter list, but you're using "viesti" in your switch statement.

:o Damn, I hate these typos. Thanks for help! :)

EDIT: Now when I try to compile that app, I'll get error:

Code:

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[Linked error] undefined reference to 'ViestinKasittelija' @16
[Linked error] undefinedreference to 'GetStockObject' @4
[Linked error] undefined reference to 'LuoIkkuna'
Id returned 1 exit status

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I'll post whole source here via pastebin. -> http://pastebin.ca/505001

You need to prototype or declare the functions in the code prior to using them.

Quote:

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Originally Posted by KONI

You need to prototype or declare the functions in the code prior to using them.

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They are prototyped.

@ Front/slash:

Your indentation and usage of braces is horrible. That's one of your problems. First of all, it's hard to read. Second of all, the compiler is interpreting everything wrong because of it and the linker can't find the functions properly in your code.

Fix the braces and you'll lose two of those errors. Link with Gdi32.lib and you'll lose the final one.

Quote:

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Originally Posted by KONI

You need to prototype or declare the functions in the code prior to using them.

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He did.