Base class from which string variant classes derive. More...
#include <glibmm/variant.h>
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| VariantStringBase () |
| Default constructor.
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| VariantStringBase (GVariant* castitem, bool take_a_reference=false) |
| GVariant constructor.
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| VariantBase () |
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| VariantBase (GVariant* castitem, bool make_a_copy=false) |
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| VariantBase (const VariantBase& src) |
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VariantBase& | operator= (const VariantBase& src) |
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| ~VariantBase () |
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GVariant* | gobj () |
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const GVariant* | gobj () const |
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GVariant* | gobj_copy () const |
| Provides access to the underlying C instance. The caller is responsible for freeing it. Use when directly setting fields in structs.
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void | init (const GVariant* cobject, bool take_a_reference=false) |
| Replace the underlying GVariant.
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VariantType | get_type () const |
| Determines the type of value.
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std::string | get_type_string () const |
| Returns the type string of value.
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bool | is_floating () const |
| Checks whether value has a floating reference count.
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bool | is_of_type (const VariantType& type) const |
| Checks if a value has a type matching the provided type.
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bool | is_container () const |
| Checks if value is a container.
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GVariantClass | classify () const |
| Classifies value according to its top-level type.
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gsize | get_size () const |
| Determines the number of bytes that would be required to store value with g_variant_store().
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gconstpointer | get_data () |
| Returns a pointer to the serialised form of a Variant instance.
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void | store (gpointer data) const |
| Stores the serialised form of value at data.
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Glib::ustring | print (bool type_annotate=false) const |
| Pretty-prints value in the format understood by g_variant_parse().
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guint | hash () const |
| Generates a hash value for a Variant instance.
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bool | equal (const VariantBase& other) const |
| Checks if one and two have the same type and value.
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void | get_normal_form (VariantBase& result) const |
| Gets a VariantBase instance that has the same value as this variant and is trusted to be in normal form.
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bool | is_normal_form () const |
| Checks if value is in normal form.
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void | byteswap (VariantBase& result) const |
| Performs a byteswapping operation on the contents of this variant.
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Base class from which string variant classes derive.
- Since glibmm 2.28:
Glib::VariantStringBase::VariantStringBase |
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Glib::VariantStringBase::VariantStringBase |
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GVariant * |
castitem, |
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bool |
take_a_reference = false |
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explicit |
GVariant constructor.
- Parameters
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castitem | The GVariant to wrap. |
take_a_reference | Whether to take an extra reference of the GVariant or not (not taking one could destroy the GVariant with the wrapper). |
Creates a D-Bus object path variant with the contents of string.
string must be a valid D-Bus object path. Use is_object_path() if unsure.
- Parameters
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output | A location in which to store the new object path variant instance. |
object_path | A normal nul-terminated string. |
- Since glibmm 2.28:
Creates a D-Bus type signature variant with the contents of string.
string must be a valid D-Bus type signature. Use is_signature() if unsure.
- Parameters
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output | A location in which to store the new signature variant instance. |
signature | A normal nul-terminated string. |
- Since glibmm 2.28:
static bool Glib::VariantStringBase::is_object_path |
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const std::string & |
string | ) |
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Determines if a given string is a valid D-Bus object path.
You should ensure that a string is a valid D-Bus object path before passing it to g_variant_new_object_path().
A valid object path starts with '/' followed by zero or more sequences of characters separated by '/' characters. Each sequence must contain only the characters "[A-Z][a-z][0-9]_". No sequence (including the one following the final '/' character) may be empty.
- Since glibmm 2.24:
- Parameters
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string | A normal C nul-terminated string. |
- Returns
true
if string is a D-Bus object path.
static bool Glib::VariantStringBase::is_signature |
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const std::string & |
string | ) |
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static |
Determines if a given string is a valid D-Bus type signature.
You should ensure that a string is a valid D-Bus type signature before passing it to g_variant_new_signature().
D-Bus type signatures consist of zero or more definite VariantType strings in sequence.
- Since glibmm 2.24:
- Parameters
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string | A normal C nul-terminated string. |
- Returns
true
if string is a D-Bus type signature.