Both windows and pixmaps can be used as sources and destinations in graphics operations. These are collectively known as drawables. The following functions apply to both windows and pixmaps.
| drawable-display | drawable | Function |
Returns the display for the specified drawable. |
| drawable-equal | drawable-1 drawable-2 | Function |
Returns true if the two arguments refer to the same server resource, and nil if they do not. |
| drawable-id | drawable | Function |
Returns the unique resource ID assigned to the specified drawable.
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