|index||The index of the clickable to check.|
This function returns whether a clickable DOM icon has been
created with the specified index exists or not. Please note, that
the value used for checking must have been initialised
previously or else you will get an error causing GameMaker:
Studio to close.
home_but = clickable_add(32, 32, sprite_get_tpe(spr_MS_Home, 0), "http://macsweeney_games.com", "_blank", "width=700, height=500, menubar=0, toolbar=0, scrollbars=0");
The above code checks the variable "home_but" to see if it already exists, and if it does not it creates a clickable DOM icon at the position (32, 32) of the page that the game canvas is running on. The icon uses the sprite referenced from the texture page as "spr_MS_Home" and when clicked the icon will open a new window for the specified URL and with the defined properties for that window.