mirror of http://192.168.1.51:8099/lmh188/twain3.0
72 lines
2.0 KiB
C++
72 lines
2.0 KiB
C++
/*
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The MIT License (MIT)
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Copyright (c) 2015 Martin Richter
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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*/
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#ifndef TWPP_DETAIL_FILE_CUSTOMDATA_HPP
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#define TWPP_DETAIL_FILE_CUSTOMDATA_HPP
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#include "../twpp.hpp"
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namespace Twpp {
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TWPP_DETAIL_PACK_BEGIN
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/// Structure for sending custom data to source or application.
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class CustomData {
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public:
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template <typename T>
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using Data = typename Detail::Lock<T>;
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/// Creates empty custom data.
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CustomData() noexcept :
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m_size(0), m_handle(){}
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/// Creates custom data with allocated memory.
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/// \throw std::bad_alloc
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explicit CustomData(UInt32 size) :
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m_size(size), m_handle(Detail::alloc(size)){}
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/// Locks and returns pointer to custom data memory.
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template<typename T = void>
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Data<T> lock() const noexcept{
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return Data<T>(m_handle);
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}
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/// The size of contained memory block.
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UInt32 size() const noexcept{
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return m_size;
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}
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private:
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UInt32 m_size;
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Detail::UniqueHandle m_handle;
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};
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TWPP_DETAIL_PACK_END
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}
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#endif // TWPP_DETAIL_FILE_CUSTOMDATA_HPP
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