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- Apple II
- Technical Notes
- _____________________________________________________________________________
- Developer Technical Support
-
-
- Apple IIGS
- #61: Window Title Handles
-
- Written by: Dave Lyons July 1989
-
- This Technical Note discusses extensions to SetWTitle and GetWTitle in System
- Software 5.0 and later which allow handles to be used as window titles.
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-
- Prior to System Software 5.0, window titles were pointers to Pascal-style
- strings (with a leading length byte), but now window titles can be stored in
- handles, with bit 31 of titlePtr set to indicate that the parameter is
- actually a handle.
-
- Once you call SetWTitle with a handle for the title parameter, the handle
- belongs to the Window Manager,which will dispose of it when the window is
- closed or retitled. You must not dispose of the handle yourself, and you must
- not change the data it contains.
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-
- Further Reference
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- o Apple IIGS Toolbox Reference, Volume 2