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SetTimer, aa, 60000  ; updates every 1 minute
aa:
IniRead, OutputVar, C:\Total Time.csv, Minutes,Total Minutes, 0 ; If no value is found, assume it is 0.
OutputVar++
IniWrite, %OutputVar%, C:\Total Time.csv, Minutes,Total Minutes
return
F11::
Gui +LastFound -Caption +ToolWindow
Gui, Color, 0x454545
Gui, Font, s20
Gui, Add, Text, vTime w500 +Center
Gui, Show
SetTimer, UpdateOSD, 1000
Gosub, UpdateOSD
OnMessage(0x201, "WM_LBUTTONDOWN")
IniRead, OutputVar, C:\Total Time.csv, Minutes,Total Minutes
UpdateOSD:
GuiControl,, Time, % ("Total Time  " d := OutputVar//1440) . " " . ("hh" d > 1 || !d ? "days" : "day")
             . " " . (h := (OutputVar-d*1440)//60) . " " . (h > 1 || !h ? "hours" : "hour")
             . " " . (m := OutputVar-h*60) . " " . (m > 1 || !m ? "mins" : "min")
Return


WM_LBUTTONDOWN() {
   PostMessage, 0xA1, 2
}

. " " . (m := OutputVar-h*60) . " " . (m > 1 || !m ? "mins" : "min")

. " " . (m := OutputVar-h*60) . " " . (m > 1 || !m ? "mins" : "min")

                 . " " . (m := OutputVar-h*60-d*1440) . " " . (m > 1 || !m ? "mins" : "min")