off monitor by one application

    .486
    .model flat, stdcall
    option casemap :none

    include \masm32\include\windows.inc
    include \masm32\macros\macros.asm

    include \masm32\include\masm32.inc
    include \masm32\include\gdi32.inc
    include \masm32\include\user32.inc
    include \masm32\include\kernel32.inc

    includelib \masm32\lib\masm32.lib
    includelib \masm32\lib\gdi32.lib
    includelib \masm32\lib\user32.lib
    includelib \masm32\lib\kernel32.lib

    .code

start:

    invoke SendMessage,HWND_BROADCAST,WM_SYSCOMMAND,SC_MONITORPOWER,2
    exit

end start