HELP URGENT WITH ACPI AND C++

Hello, I'm new here in forum, I need a help with one question, I don't know make this program..

- I need turn on / off the display(monitor from de computer) using ACPI but, I have to use openWatcom to compile the program, and the program will be running in the MSDOS.
then it can not get any ready function from windows like import usr32.dll .
Please There are anyone for help me?
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