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improve listbox model_guard exception information

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This commit is contained in:
Jinhao 2017-08-02 00:14:39 +08:00
parent 2853c652e5
commit 12843da679
1 changed files with 1 additions and 1 deletions
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2
include/nana/gui/widgets/listbox.hpp
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@ -535,7 +535,7 @@ namespace nana
throw std::invalid_argument("invalid listbox model container type");
if (nullptr == p->pointer())
throw std::runtime_error("the modal is immutable");
throw std::runtime_error("the modal is immutable, please declare model_guard with const");
return *static_cast<stlcontainer*>(p->pointer());
}