U++ framework: TreeCtrl » OptionTree loses check state when add Callback for the option.

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OptionTree loses check state when add Callback for the option. [message #37576]

Fri, 19 October 2012 15:18

akebee
Messages: 90
Registered: August 2011
Location: China

Member

Add(horz.Horz().SizePos());
optree.SetRoot("Parent");

optree.Add(0,x[0],"a");
optree.Add(0,x[1],"b");
optree.Add(0,x[2],"c");
optree.Open(0);
		
//if i add below Callback function,the ParentOption`s checkstate //will lose
x[0] <<= THISBACK(OnOption1);

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Re: OptionTree loses check state when add Callback for the option. [message #37700 is a reply to message #37576]

Sun, 04 November 2012 09:12

mirek
Messages: 14290
Registered: November 2005

Ultimate Member

It is because the WhenAction of Option is used by OptionTree to do the work. So if you replace it with your own callback, nothing happens.

Use operator<< to add callback instead of replacing it:

x[0] << THISBACK(OnOption1);

Mirek

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