Returns the value of the specified property from the specified GUI control

The following properties are available for each control:

• Button
  • "name"
  • "visible"
  • "hotkey"
  • "text"
  • "hide"
  • "sticky"
  • "colour"
  • "background"
• Icon
  • "name"
  • "visible"
  • "align"
  • "scale"
  • "damage"
  • "background"
• Label
  • "name"
  • "visible"
  • "align"
  • "text"
  • "binding"
  • "shadow"
  • "colour"
  • "background"
• Custom Gui
  • "name"
  • "visible"
  • "layout"
  • "width"
  • "heigth"
• Playback Status
  • "name"
  • "visible"
• Progress Bar
  • "name"
  • "visible"
  • "expression"
  • "style"
  • "min"
  • "max"
  • "calcmin"
  • "calcmax"
  • "colour"
  • "background"
• Slider
  • "name"
  • "visible"
  • "binding"
  • "hotkeydec"
  • "hotkeyinc"
  • "min"
  • "max"
  • "calcmin"
  • "calcmax"
  • "colour"
  • "background"
• Textarea
  • "name"
  • "visible"
  • "lifespan"
  • "colour"