AutoHotkey Community

;#NoTrayIcon    don't display the script icon in the tray
#MaxHotkeysPerInterval 200
#NoEnv  ; Recommended for performance and compatibility with future AutoHotkey releases.
#SingleInstance force
SetBatchLines -1

; -------------------
; START CONFIGURATION
; -------------------
; The percentage by which to raise or lower the volume each time
; How long to display the volume level bar graphs (in milliseconds)
vol_DisplayTime = 1500
; Transparency of window (0-255)
vol_TransValue = 200
; Bar's background colour
vol_CW = EEEEEE   
vol_Width = 300  ; width of bar
vol_Thick = 20   ; thickness of bar
; Bar's screen position
vol_PosX := A_ScreenWidth/2 - vol_Width/2
vol_PosY := A_ScreenHeight/1.08 - vol_Thick/2
; --------------------
; END OF CONFIGURATION
; --------------------
vol_BarOptionsMaster = 1:B1 ZH%vol_Thick% ZX8 ZY4 W%vol_Width% X%vol_PosX% Y%vol_PosY% CW%vol_CW%

br := %0% ; brightness, in the range of 0 - 255, where 128 is normal
;br += (InStr(A_ThisHotkey, "F1") ? -Brght_Step : Brght_Step )
If ( br > 256 )
   br := 256
If ( br < 0)
   br := 0   
VarSetCapacity(gr, 512*3)
Loop, 256
{
   If  (nValue:=(br+128)*(A_Index-1))>65535
        nValue:=65535
   NumPut(nValue, gr,      2*(A_Index-1), "Ushort")
   NumPut(nValue, gr,  512+2*(A_Index-1), "Ushort")
   NumPut(nValue, gr, 1024+2*(A_Index-1), "Ushort")
}
hDC := DllCall("GetDC", "Uint", 0) ;NULL for entire screen
DllCall("SetDeviceGammaRamp", "Uint", hDC, "Uint", &gr)
DllCall("ReleaseDC", "Uint", 0, "Uint", hDC)


vol_ShowBars:
; Get volumes in case the user or an external program changed them:
vol_Master := (br/2.5)
vbr := (br*100)//256
if vol_Master = 128
{
  vol_Colour = Green
  vol_Text = Brightness %vbr%`%
}

if vol_Master > 128
{
  vol_Colour = Red   
  vol_Text = Brightness %vbr%`%
}
if vol_Master < 128
{
  vol_Colour = Blue

  vol_Text = Brightness %vbr%`%
}

; To prevent the "flashing" effect, only create the bar window if it doesn't already exist:
IfWinNotExist, BrightnessOSDxyz
{
    Progress, %vol_BarOptionsMaster% CB%vol_Colour% CT%vol_Colour%, , %vol_Text%, BrightnessOSDxyz
    WinSet, Transparent, %vol_TransValue%, BrightnessOSDxyz
}

Progress, 1:%vol_Master% ,, %vol_Text%
SetTimer, vol_BarOff, %vol_DisplayTime%
Sleep, 3000
return


vol_BarOff:
SetTimer, vol_BarOff, off
Progress, 1:Off
return