The '''[Microsoft Windows] [API]''' provides a set of functions that are
generally supported on both 32 and 64-bit Windows.



** Documentation **

   [http://msdn.microsoft.com/en-us/library/hh920508%28v=vs.85%29.aspx%|%API INdex]:   The official reference



** Description **

Originally called the [Win32] API, the name Windows API its roots in 16-bit Windows and its current support of 32 and 64-bit Windows. 

Tk and Tcl use the Win32 [API] to access [operating system%|%OS] functions and draw on the screen.

[[elaborate on how it can be used for many other purposes and how Tcl uses it]]



** See Also **

   [How Tcl accesses the Win32 API]:   





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