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- Apple II
- Technical Notes
- _____________________________________________________________________________
- Developer Technical Support
-
-
- Apple IIGS
- #43: Undocumented Feature of CalcMenuSize
-
- Written by: Dan Oliver November 1988
-
- This Technical Note documents that CalcMenuSize can accept a parameter of
- $FFFF to recalculate menus with uninitialized heights and widths.
- _____________________________________________________________________________
-
- The newWidth and newHeight parameters of CalcMenuSize can be the actual new
- width and height or zero to automatically compute the width and the height.
- In addition to these two possibilities, you can also pass $FFFF in newWidth,
- newHeight, or even both to tell CalcMenuSize to automatically compute the
- width and height only if the current setting is zero. Here are some examples
- of how these three, previously undocumented features might be used:
-
- Pass a New Value
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- Pass a new value when you need the width and height to be a specific size.
-
- Pass $0000
-
- Pass $0000 when you want to compute a new value regardless of the current
- value. You could compute a new value after you add or delete a new item or
- change its title since the current values for width and height are set to the
- current size which may be incorrect due to the change. Passing $0000 adjusts
- the menu size according to the new menu items.
-
- Pass $FFFF
-
- Pass $FFFF when you want to compute a new value only when the current value is
- zero, as when the menu is first created. FixMenuBar passes $FFFF to compute
- sizes for only those menus with widths and heights of zero.
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-
- Further Reference
- o Apple IIGS Toolbox Reference, Volume 1
-
-