window around active win

#Persistent

; windows in windows 10 has thick invisible boarder which is about 4 pixels wide.

SetTimer, DrawRect, 50
border_thickness = 4

; set the color of the border
border_color = ffae00


DrawRect:

; Get the current window's position
WinGetPos, x, y, w, h, A
; To avoid the error message
if (x="")
    return

;Gui, +Lastfound +AlwaysOnTop +Toolwindow
Gui, +Lastfound +AlwaysOnTop

; set the background for the GUI window
Gui, Color, %border_color%

; remove thick window border of the GUI window
Gui, -Caption

; Retrieves the minimized/maximized state for a window.
WinGet, notMedium , MinMax, A

if (notMedium==0){
; 0: The window is neither minimized nor maximized.

	offset:=0
	outerX:=offset
	outerY:=offset
	outerX2:=w-offset
	outerY2:=h-offset

	innerX:=border_thickness+offset
	innerY:=border_thickness+offset
	innerX2:=w-border_thickness-offset
	innerY2:=h-border_thickness-offset

	newX:=x
	newY:=y
	newW:=w
	newH:=h

	WinSet, Region, %outerX%-%outerY% %outerX2%-%outerY% %outerX2%-%outerY2% %outerX%-%outerY2% %outerX%-%outerY%    %innerX%-%innerY% %innerX2%-%innerY% %innerX2%-%innerY2% %innerX%-%innerY2% %innerX%-%innerY%

	Gui, Show, w%newW% h%newH% x%newX% y%newY% NoActivate, GUI4Boarder
	return
} else {
    WinSet, Region, 0-0 w0 h0
    return
}

return