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> Human Interface Toolbox
> Window Manager
>
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Programming With the Mac OS 8.5 Window Manager
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GetWindowPropertySize
Obtains the size of a piece of data that is associated with a window.
pascal OSStatus GetWindowPropertySize (
WindowPtr window,
PropertyCreator creator,
PropertyTag tag,
UInt32 *size);
- window
- A value of type WindowPtr . Pass a pointer to the window to be examined for associated data.
- creator
- A four-character code. Pass the creator code (typically, the application's signature) of the associated data whose size is to be obtained.
- tag
- A four-character code. Pass the application-defined code identifying the associated data whose size is to be obtained.
- size
- A pointer to a value that, on return, specifies the size of the associated data.
- function result
- A result code. See Result Codes.
DISCUSSION
If you want to retrieve a piece of associated data with the GetWindowProperty function, you typically need to use the GetWindowPropertySize function to determine the size of the data beforehand.
© 1999 Apple Computer, Inc. – (Last Updated 18 March 99)