implementing timer events

[Lee]

I am working on a small application for windows that updates its
client window every 30 milliseconds. I tried to do this using the
SetTimer function defined in the windows API. Unfortunately
however, the compiler generates an error, every time it encounters
the function call ("Error: undefined identifier SetTimer"). I
tried compiling with the gdi32.lib included along with the
basic .def file given in the winsamp example. I attached a copy of
the source code. Any assistance would be appreciated. Thanks in
advance.
Lee
begin 644 D_windows_timer.txt
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end