GetCIcon
GetCIcon
Obtain handle to a specified 'cicn' resource short id ; resource ID of desired icon
returns CIconHandle leading to the icon's data structure
GetCIcon obtains a CIcon data structure and initializes it from data in the 'cicn' resources for that specific ID.
id is the resource identifier of the desired icon.
Returns: a CIconHandle leading to the icon's bit image. If the resource ID id can't be found, the return value is NIL.
a new CIcon data structure each time it's called and the overhead will build
up. Also, GetCIcon doesn't dispose of or detach the 'cicn' resource, so they need to be purgeable.