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10.4.2 Specifying the owner

If the default is not appropriate, then the programmer needs to supply the owner. This owner argument can be any CAPI pane that is currently displayed, and the top level interface of the pane is used as the actual owner. A CAPI pane owner must be running in the current process (see the process argument to display ). Creating cross-process ownership can lead to deadlocks.

The owner can also be a screen object, which tells the system on which screen to put the dialog, but none of the windows will be the dialog's owner.

The owner can be supplied by the keyword argument :owner in functions such as display-dialog and print-dialog . Other functions such as prompt-for-string and prompt-for-file can be supplied an owner in the :popup-args list as a pair :owner owner .


LispWorks CAPI User Guide (Macintosh version) - 17 Mar 2008

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