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apply folding expression and std::optional

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Jinhao
2017-12-23 00:10:10 +08:00
parent 4917b18c70
commit be836b5b48
11 changed files with 58 additions and 28 deletions
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2
source/gui/widgets/label.cpp
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@@ -653,7 +653,7 @@ namespace nana
: impl_{ impl }
{}
optional<size> measure(graph_reference graph, unsigned limit_pixels, bool limit_width) const override
std::optional<size> measure(graph_reference graph, unsigned limit_pixels, bool limit_width) const override
{
//Label now doesn't support to measure content with a specified height.
if (graph && ((0 == limit_pixels) || limit_width))