emulate alt-drag in IB

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2 total messages Started by Robert D. Nicholson Tue, 17 Nov 1992 06:29

#1792

Author: Robert D. Nicholson
Date: Tue, 17 Nov 1992 06:29

2 lines
523 bytes

How does IB decide wether the user can alt-drag on an object to
create a matrix of the selected object?

Re: emulate alt-drag in IB

#1864

Author: Gregory H. Anderson
Date: Thu, 19 Nov 1992 16:28

19 lines
1200 bytes

In article <1992Nov17.062956.11676@monu6.cc.monash.edu.au>  
ede978e@monu6.cc.monash.edu.au (Robert D. Nicholson) writes:
> How does IB decide wether the user can alt-drag on an object to
> create a matrix of the selected object?
> 
I think the rule is that it has to be a Control that contains a subclass  
of ActionCell (which all current Controls do). In other words,

([object isKindOf:[Control class]] && 
  [[object cell] isKindOf:[ActionCell class]])

must return YES. Because IB then initializes a Matrix with the Control's  
cell as its protoCell.

--
Gregory H. Anderson          | Thus spake the master programmer: 
Master Programmer / Manager  | "Let the programmers be many and  
Anderson Financial Systems   | the managers few; then all will be 
greg@afs.com  (Nextmail OK)  | productive." -- Tao of Programming

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