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Home » U++ Library support » TreeCtrl » OptionTree problems
Re: OptionTree problems [message #59946 is a reply to message #59933] Wed, 07 June 2023 09:44 Go to previous message
zouql is currently offline  zouql
Messages: 15
Registered: December 2020
Location: China
Promising Member
Hello mirek,

I think i found the reason.
In the CtrLib/Button.cpp Option& Option::Set(int b) function.
if the code is: 
option = IsNull(b) ? Null : (bool)b;
then the option can't assign a Null.
but when changed to : 
IsNull(b) ?  (option = Null) : (option = (bool)b);
the option can assigned to Null.

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