Value

An opaque structure used to hold different types of values. The data within the structure has protected scope: it is accessible only to functions within a #GTypeValueTable structure, or implementations of the g_value_*() API. That is, code portions which implement new fundamental types. #GValue users cannot make any assumptions about how data is stored within the 2 element @data union, and the @g_type member should only be accessed through the G_VALUE_TYPE() macro.

class Value {}

Constructors

this
this(GValue* gValue, bool ownedRef)

Sets our main struct and passes it to the parent class.

this
this()
this
this(GOBJECT obj)
this
this(string value)
this
this(BOOL value)
this
this(INT value)
this
this(FLOAT value)

Members

Functions

copy
void copy(Value destValue)

Copies the value of @src_value into @dest_value.

dupBoxed
void* dupBoxed()

Get the contents of a %G_TYPE_BOXED derived #GValue. Upon getting, the boxed value is duplicated and needs to be later freed with g_boxed_free(), e.g. like: g_boxed_free (G_VALUE_TYPE (@value), return_value);

dupObject
ObjectG dupObject()

Get the contents of a %G_TYPE_OBJECT derived #GValue, increasing its reference count. If the contents of the #GValue are %NULL, then %NULL will be returned.

dupParam
ParamSpec dupParam()

Get the contents of a %G_TYPE_PARAM #GValue, increasing its reference count.

dupString
string dupString()

Get a copy the contents of a %G_TYPE_STRING #GValue.

dupVariant
Variant dupVariant()

Get the contents of a variant #GValue, increasing its refcount. The returned #GVariant is never floating.

fitsPointer
bool fitsPointer()

Determines if @value will fit inside the size of a pointer value. This is an internal function introduced mainly for C marshallers.

getBoolean
bool getBoolean()

Get the contents of a %G_TYPE_BOOLEAN #GValue.

getBoxed
void* getBoxed()

Get the contents of a %G_TYPE_BOXED derived #GValue.

getChar
char getChar()

Do not use this function; it is broken on platforms where the %char type is unsigned, such as ARM and PowerPC. See g_value_get_schar().

getDouble
double getDouble()

Get the contents of a %G_TYPE_DOUBLE #GValue.

getEnum
int getEnum()

Get the contents of a %G_TYPE_ENUM #GValue.

getFlags
uint getFlags()

Get the contents of a %G_TYPE_FLAGS #GValue.

getFloat
float getFloat()

Get the contents of a %G_TYPE_FLOAT #GValue.

getGtype
GType getGtype()

Get the contents of a %G_TYPE_GTYPE #GValue.

getInt
int getInt()

Get the contents of a %G_TYPE_INT #GValue.

getInt64
long getInt64()

Get the contents of a %G_TYPE_INT64 #GValue.

getLong
glong getLong()

Get the contents of a %G_TYPE_LONG #GValue.

getObject
ObjectG getObject()

Get the contents of a %G_TYPE_OBJECT derived #GValue.

getParam
ParamSpec getParam()

Get the contents of a %G_TYPE_PARAM #GValue.

getPointer
void* getPointer()

Get the contents of a pointer #GValue.

getSchar
byte getSchar()

Get the contents of a %G_TYPE_CHAR #GValue.

getString
string getString()

Get the contents of a %G_TYPE_STRING #GValue.

getStruct
void* getStruct()

the main Gtk struct as a void*

getUchar
char getUchar()

Get the contents of a %G_TYPE_UCHAR #GValue.

getUint
uint getUint()

Get the contents of a %G_TYPE_UINT #GValue.

getUint64
ulong getUint64()

Get the contents of a %G_TYPE_UINT64 #GValue.

getUlong
gulong getUlong()

Get the contents of a %G_TYPE_ULONG #GValue.

getValueStruct
GValue* getValueStruct(bool transferOwnership)

Get the main Gtk struct

getVariant
Variant getVariant()

Get the contents of a variant #GValue.

init
Value init(GType gType)

Initializes @value with the default value of @type.

initFromInstance
void initFromInstance(TypeInstance instanc)

Initializes and sets @value from an instantiatable type via the value_table's collect_value() function.

peekPointer
void* peekPointer()

Returns the value contents as pointer. This function asserts that g_value_fits_pointer() returned %TRUE for the passed in value. This is an internal function introduced mainly for C marshallers.

reset
Value reset()

Clears the current value in @value and resets it to the default value (as if the value had just been initialized).

setBoolean
void setBoolean(bool vBoolean)

Set the contents of a %G_TYPE_BOOLEAN #GValue to @v_boolean.

setBoxed
void setBoxed(void* vBoxed)

Set the contents of a %G_TYPE_BOXED derived #GValue to @v_boxed.

setBoxedTakeOwnership
void setBoxedTakeOwnership(void* vBoxed)

This is an internal function introduced mainly for C marshallers.

setChar
void setChar(char vChar)

Set the contents of a %G_TYPE_CHAR #GValue to @v_char.

setDouble
void setDouble(double vDouble)

Set the contents of a %G_TYPE_DOUBLE #GValue to @v_double.

setEnum
void setEnum(int vEnum)

Set the contents of a %G_TYPE_ENUM #GValue to @v_enum.

setFlags
void setFlags(uint vFlags)

Set the contents of a %G_TYPE_FLAGS #GValue to @v_flags.

setFloat
void setFloat(float vFloat)

Set the contents of a %G_TYPE_FLOAT #GValue to @v_float.

setGtype
void setGtype(GType vGtype)

Set the contents of a %G_TYPE_GTYPE #GValue to @v_gtype.

setInstance
void setInstance(void* instanc)

Sets @value from an instantiatable type via the value_table's collect_value() function.

setInt
void setInt(int vInt)

Set the contents of a %G_TYPE_INT #GValue to @v_int.

setInt64
void setInt64(long vInt64)

Set the contents of a %G_TYPE_INT64 #GValue to @v_int64.

setLong
void setLong(glong vLong)

Set the contents of a %G_TYPE_LONG #GValue to @v_long.

setObject
void setObject(ObjectG vObject)

Set the contents of a %G_TYPE_OBJECT derived #GValue to @v_object.

setObjectTakeOwnership
void setObjectTakeOwnership(void* vObject)

This is an internal function introduced mainly for C marshallers.

setParam
void setParam(ParamSpec param)

Set the contents of a %G_TYPE_PARAM #GValue to @param.

setParamTakeOwnership
void setParamTakeOwnership(ParamSpec param)

This is an internal function introduced mainly for C marshallers.

setPointer
void setPointer(void* vPointer)

Set the contents of a pointer #GValue to @v_pointer.

setSchar
void setSchar(byte vChar)

Set the contents of a %G_TYPE_CHAR #GValue to @v_char.

setStaticBoxed
void setStaticBoxed(void* vBoxed)

Set the contents of a %G_TYPE_BOXED derived #GValue to @v_boxed. The boxed value is assumed to be static, and is thus not duplicated when setting the #GValue.

setStaticString
void setStaticString(string vString)

Set the contents of a %G_TYPE_STRING #GValue to @v_string. The string is assumed to be static, and is thus not duplicated when setting the #GValue.

setString
void setString(string vString)

Set the contents of a %G_TYPE_STRING #GValue to @v_string.

setStringTakeOwnership
void setStringTakeOwnership(string vString)

This is an internal function introduced mainly for C marshallers.

setUchar
void setUchar(char vUchar)

Set the contents of a %G_TYPE_UCHAR #GValue to @v_uchar.

setUint
void setUint(uint vUint)

Set the contents of a %G_TYPE_UINT #GValue to @v_uint.

setUint64
void setUint64(ulong vUint64)

Set the contents of a %G_TYPE_UINT64 #GValue to @v_uint64.

setUlong
void setUlong(gulong vUlong)

Set the contents of a %G_TYPE_ULONG #GValue to @v_ulong.

setVariant
void setVariant(Variant variant)

Set the contents of a variant #GValue to @variant. If the variant is floating, it is consumed.

takeBoxed
void takeBoxed(void* vBoxed)

Sets the contents of a %G_TYPE_BOXED derived #GValue to @v_boxed and takes over the ownership of the callers reference to @v_boxed; the caller doesn't have to unref it any more.

takeObject
void takeObject(void* vObject)

Sets the contents of a %G_TYPE_OBJECT derived #GValue to @v_object and takes over the ownership of the callers reference to @v_object; the caller doesn't have to unref it any more (i.e. the reference count of the object is not increased).

takeParam
void takeParam(ParamSpec param)

Sets the contents of a %G_TYPE_PARAM #GValue to @param and takes over the ownership of the callers reference to @param; the caller doesn't have to unref it any more.

takeString
void takeString(string vString)

Sets the contents of a %G_TYPE_STRING #GValue to @v_string.

takeVariant
void takeVariant(Variant variant)

Set the contents of a variant #GValue to @variant, and takes over the ownership of the caller's reference to @variant; the caller doesn't have to unref it any more (i.e. the reference count of the variant is not increased).

transform
bool transform(Value destValue)

Tries to cast the contents of @src_value into a type appropriate to store in @dest_value, e.g. to transform a %G_TYPE_INT value into a %G_TYPE_FLOAT value. Performing transformations between value types might incur precision lossage. Especially transformations into strings might reveal seemingly arbitrary results and shouldn't be relied upon for production code (such as rcfile value or object property serialization).

unset
void unset()

Clears the current value in @value (if any) and "unsets" the type, this releases all resources associated with this GValue. An unset value is the same as an uninitialized (zero-filled) #GValue structure.

Static functions

getType
GType getType()
paramSpecBoolean
ParamSpec paramSpecBoolean(string name, string nick, string blurb, bool defaultValue, GParamFlags flags)

Creates a new #GParamSpecBoolean instance specifying a %G_TYPE_BOOLEAN property. In many cases, it may be more appropriate to use an enum with g_param_spec_enum(), both to improve code clarity by using explicitly named values, and to allow for more values to be added in future without breaking API.

paramSpecBoxed
ParamSpec paramSpecBoxed(string name, string nick, string blurb, GType boxedType, GParamFlags flags)

Creates a new #GParamSpecBoxed instance specifying a %G_TYPE_BOXED derived property.

paramSpecChar
ParamSpec paramSpecChar(string name, string nick, string blurb, byte minimum, byte maximum, byte defaultValue, GParamFlags flags)

Creates a new #GParamSpecChar instance specifying a %G_TYPE_CHAR property.

paramSpecDouble
ParamSpec paramSpecDouble(string name, string nick, string blurb, double minimum, double maximum, double defaultValue, GParamFlags flags)

Creates a new #GParamSpecDouble instance specifying a %G_TYPE_DOUBLE property.

paramSpecEnum
ParamSpec paramSpecEnum(string name, string nick, string blurb, GType enumType, int defaultValue, GParamFlags flags)

Creates a new #GParamSpecEnum instance specifying a %G_TYPE_ENUM property.

paramSpecFlags
ParamSpec paramSpecFlags(string name, string nick, string blurb, GType flagsType, uint defaultValue, GParamFlags flags)

Creates a new #GParamSpecFlags instance specifying a %G_TYPE_FLAGS property.

paramSpecFloat
ParamSpec paramSpecFloat(string name, string nick, string blurb, float minimum, float maximum, float defaultValue, GParamFlags flags)

Creates a new #GParamSpecFloat instance specifying a %G_TYPE_FLOAT property.

paramSpecGtype
ParamSpec paramSpecGtype(string name, string nick, string blurb, GType isAType, GParamFlags flags)

Creates a new #GParamSpecGType instance specifying a %G_TYPE_GTYPE property.

paramSpecInt
ParamSpec paramSpecInt(string name, string nick, string blurb, int minimum, int maximum, int defaultValue, GParamFlags flags)

Creates a new #GParamSpecInt instance specifying a %G_TYPE_INT property.

paramSpecInt64
ParamSpec paramSpecInt64(string name, string nick, string blurb, long minimum, long maximum, long defaultValue, GParamFlags flags)

Creates a new #GParamSpecInt64 instance specifying a %G_TYPE_INT64 property.

paramSpecLong
ParamSpec paramSpecLong(string name, string nick, string blurb, glong minimum, glong maximum, glong defaultValue, GParamFlags flags)

Creates a new #GParamSpecLong instance specifying a %G_TYPE_LONG property.

paramSpecObject
ParamSpec paramSpecObject(string name, string nick, string blurb, GType objectType, GParamFlags flags)

Creates a new #GParamSpecBoxed instance specifying a %G_TYPE_OBJECT derived property.

paramSpecOverride
ParamSpec paramSpecOverride(string name, ParamSpec overridden)

Creates a new property of type #GParamSpecOverride. This is used to direct operations to another paramspec, and will not be directly useful unless you are implementing a new base type similar to GObject.

paramSpecParam
ParamSpec paramSpecParam(string name, string nick, string blurb, GType paramType, GParamFlags flags)

Creates a new #GParamSpecParam instance specifying a %G_TYPE_PARAM property.

paramSpecPointer
ParamSpec paramSpecPointer(string name, string nick, string blurb, GParamFlags flags)

Creates a new #GParamSpecPointer instance specifying a pointer property. Where possible, it is better to use g_param_spec_object() or g_param_spec_boxed() to expose memory management information.

paramSpecString
ParamSpec paramSpecString(string name, string nick, string blurb, string defaultValue, GParamFlags flags)

Creates a new #GParamSpecString instance.

paramSpecUchar
ParamSpec paramSpecUchar(string name, string nick, string blurb, ubyte minimum, ubyte maximum, ubyte defaultValue, GParamFlags flags)

Creates a new #GParamSpecUChar instance specifying a %G_TYPE_UCHAR property.

paramSpecUint
ParamSpec paramSpecUint(string name, string nick, string blurb, uint minimum, uint maximum, uint defaultValue, GParamFlags flags)

Creates a new #GParamSpecUInt instance specifying a %G_TYPE_UINT property.

paramSpecUint64
ParamSpec paramSpecUint64(string name, string nick, string blurb, ulong minimum, ulong maximum, ulong defaultValue, GParamFlags flags)

Creates a new #GParamSpecUInt64 instance specifying a %G_TYPE_UINT64 property.

paramSpecUlong
ParamSpec paramSpecUlong(string name, string nick, string blurb, gulong minimum, gulong maximum, gulong defaultValue, GParamFlags flags)

Creates a new #GParamSpecULong instance specifying a %G_TYPE_ULONG property.

paramSpecUnichar
ParamSpec paramSpecUnichar(string name, string nick, string blurb, dchar defaultValue, GParamFlags flags)

Creates a new #GParamSpecUnichar instance specifying a %G_TYPE_UINT property. #GValue structures for this property can be accessed with g_value_set_uint() and g_value_get_uint().

paramSpecValueArray
ParamSpec paramSpecValueArray(string name, string nick, string blurb, ParamSpec elementSpec, GParamFlags flags)

Creates a new #GParamSpecValueArray instance specifying a %G_TYPE_VALUE_ARRAY property. %G_TYPE_VALUE_ARRAY is a %G_TYPE_BOXED type, as such, #GValue structures for this property can be accessed with g_value_set_boxed() and g_value_get_boxed().

paramSpecVariant
ParamSpec paramSpecVariant(string name, string nick, string blurb, VariantType type, Variant defaultValue, GParamFlags flags)

Creates a new #GParamSpecVariant instance specifying a #GVariant property.

registerTransformFunc
void registerTransformFunc(GType srcType, GType destType, GValueTransform transformFunc)

Registers a value transformation function for use in g_value_transform(). A previously registered transformation function for @src_type and @dest_type will be replaced.

strdupValueContents
string strdupValueContents(Value value)

Return a newly allocated string, which describes the contents of a #GValue. The main purpose of this function is to describe #GValue contents for debugging output, the way in which the contents are described may change between different GLib versions.

typeCompatible
bool typeCompatible(GType srcType, GType destType)

Returns whether a #GValue of type @src_type can be copied into a #GValue of type @dest_type.

typeTransformable
bool typeTransformable(GType srcType, GType destType)

Check whether g_value_transform() is able to transform values of type @src_type into values of type @dest_type. Note that for the types to be transformable, they must be compatible or a transformation function must be registered.

Variables

gValue
GValue* gValue;

the main Gtk struct

ownedRef
bool ownedRef;
Undocumented in source.

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