blockWidth = 200
blockHeight = 50

;; End of configuration section

#NoEnv
#Persistent
#SingleInstance

SendMode Input
SetWorkingDir %A_ScriptDir%
CoordMode, Mouse, Screen

guiIndex := 1
while true
  {
  #b::
    MouseGetPos, xpos, ypos
    Gui %guiIndex%:Default
    Gui, +AlwaysOnTop -Caption
    Gui, %guiIndex%:Color, 000000
    Gui, %guiIndex%:Show, x%xpos% y%ypos% w%blockWidth% h%blockHeight%
    guiIndex := guiIndex + 1
  return
}