glibmm
2.42.0
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A keeper class for C array. More...
#include <glibmm/vectorutils.h>
Public Types | |
typedef Tr::CppType | CppType |
typedef Tr::CType | CType |
Public Member Functions | |
ArrayKeeper (const CType* array, std::size_t array_size, Glib::OwnershipType ownership) | |
Constructs an ArrayKeeper holding array of size array_size. More... | |
ArrayKeeper (const ArrayKeeper& keeper) | |
~ArrayKeeper () | |
CType* | data () const |
Gets data the keeper holds. More... | |
A keeper class for C array.
Primarily used by C++ wrappers like gtkmm.
Its main purpose is to free its data when they are not needed. What will be destroyed depends on passed ownership upon construction.
The most common usage of Glib::ArrayKeeper is getting its data when converting std::vector to a C array:
Variables of this class are seldom defined directly - it is mostly used as a temporary variable returned by Glib::ArrayHandler::vector_to_array().
Note that the usage above is correct with regards to C++ standard point 12.2.3. That means that data returned by data() method is valid through whole g_temp_do_something function and is destroyed, when this function returns.
typedef Tr::CppType Glib::Container_Helpers::ArrayKeeper< Tr >::CppType |
typedef Tr::CType Glib::Container_Helpers::ArrayKeeper< Tr >::CType |
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inlineexplicit |
Constructs an ArrayKeeper holding array of size array_size.
ownership tells what should be destroyed with keeper destruction:
array | - C array to hold. |
array_size | - length of array. |
ownership | - ownership definition. |
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inline |
Glib::Container_Helpers::ArrayKeeper< Tr >::~ArrayKeeper | ( | ) |
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inline |
Gets data the keeper holds.
Note that this data is owned by the keeper, so there is no need to free it.