Are you linking with gdiplus.lib?
>2003 visual studio's 6.0
The Visual Studio that came out in 2003 is wildly different from Visual Studio 6. It's commonly called Visual Studio 7, but the correct name is Visual Studio .NET 2003. The libraries and compiler proper changed quite a bit to better conform with the C++ standard. However, to use GDI+, it should not matter whether you are using Visual Studio 6 or Visual Studio .NET. I would guess that you aren't linking with the library.
