name = "tst20200818xx" if Win32API.new("kernel32", "OpenEventA", "llp", "l").call(2, 0, name) != 0 p "已有实例运行" exit end if Win32API.new("kernel32", "CreateEventA", "lllp", "l").call(0, 0, 0, name) == 0 p "名称有误" exit end
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