InstallScript: How to use Kernel32 MoveFile

MoveFile Kernel32 API function moves an existing file or a directory, including its children.
Below shows an example code how to use it in InstallScript

	#include "ifx.h"
	prototype Kernel32.OutputDebugString(wstring);
	prototype NUMBER Kernel32.MoveFileW(wstring, wstring);
	prototype NUMBER Kernel32.GetLastError();
	function OnBegin()
	NUMBER nReturn, nError;
	STRING sError;
	begin
	OutputDebugString("OnBegin..start");
	nReturn = Kernel32.MoveFileW("D:\\tmp\\srcdir","D:\\tmp\\dstdir");
	nError = Err.LastDllError;
	if( 0 == nReturn) then
	NumToStr(sError, nError);
	OutputDebugString("Bad move:" + sError);
	endif;
	OutputDebugString("OnBegin..end");
	end;

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