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Navigation: Code Documentation > RSCommon > GValue > Classes

TGValue Class

Implements an object that can hold any type of value; Integer,
Float, Boolean, Object, etc.; and can convert between them. Since it avoids all pointers to values, There are a few issues:

1. If you use AsInterface, it better well be an interface or
you will get an access error

2. The Precision of Currency is only what will fit in Single

3. AsVariant does not truly store the variant.

The bulk of the class is just properties and their accessor methods for retrieving values of the different types. The class does not guarantee type conversion between all the types, but the basic conversions have been implemented.

For Windows platforms only.

Note
This class is extremely similar to the TIEValue class in the Inference Engine Component Suite, but without the IECS specific code.

Namespace: GValue

	Name	Description
	Create	Creates the generic value. The value is GValue.TGCustomValue.Unassigned. (Inherited from GValue.TGCustomValue.)
	CreateValue(TVarRec)	Creates the value object and assigns the AValue to the new object. (Inherited from GValue.TGCustomValue.)

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	Name	Description
	AsBoolean	Represents property AsBoolean.
	AsChar	Represents property AsChar.
	AsClass	Represents property AsClass.
	AsCurrency	Represents property AsCurrency.
	AsFloat	Represents property AsFloat.
	AsInteger	Represents property AsInteger.
	AsInterface	Represents property AsInterface.
	AsObject	Represents property AsObject.
	AsPChar	Represents property AsPChar.
	AsPointer	Represents property AsPointer.
	AsString	Represents property AsString.
	AsVariant	Represents property AsVariant.
	AsWideString	Represents property AsWideString.
	Unassigned	Represents property Unassigned.
	Value	Represents property Value.
	VType	Represents property VType.

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	Name	Description
	Assign(TGCustomValue)	Copies the source value to the current value (Inherited from GValue.TGCustomValue.)
	AssignVarRec(TVarRec)	Copies the source TVarRect to the current value. (Inherited from GValue.TGCustomValue.)
	Clone(TGCustomValue)	Creates a TGCustomValue (if Dest is nil) and then copies the current value into the clone. (Inherited from GValue.TGCustomValue.)
	Equals(TGCustomValue)	Returns true if the current value equals the input AValue. (Inherited from GValue.TGCustomValue.)
	GetAsBoolean	Returns the value converted to a boolean (Inherited from GValue.TGCustomValue.)
	GetAsChar	Returns the value converted to a character (Inherited from GValue.TGCustomValue.)
	GetAsClass	Returns the value converted to a class (Inherited from GValue.TGCustomValue.)
	GetAsCurrency	Returns the value converted to currency (Inherited from GValue.TGCustomValue.)
	GetAsFloat	Returns the value converted to an native sized floating point number (Inherited from GValue.TGCustomValue.)
	GetAsInteger	Returns the value converted to an integer (Inherited from GValue.TGCustomValue.)
	GetAsInterface	Returns the value converted to an interface (Inherited from GValue.TGCustomValue.)
	GetAsObject	Returns the value converted to a TObject (Inherited from GValue.TGCustomValue.)
	GetAsPointer	Returns the value converted to a pointer (Inherited from GValue.TGCustomValue.)
	GetAsString	Returns the value converted to a string (Inherited from GValue.TGCustomValue.)
	GetAsVariant	Returns the value converted to a variant (Inherited from GValue.TGCustomValue.)
	GetAsWideString	Returns the value converted to a wide string (Inherited from GValue.TGCustomValue.)
	GetValueType	Returns the type of the value in the object. (Inherited from GValue.TGCustomValue.)
	SetAsBoolean(Boolean)	Stores a boolean in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)
	SetAsChar(Char)	Stores a character in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)
	SetAsClass(TClass)	Stores a class in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)
	SetAsCurrency(Currency)	Stores a currency value in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)
	SetAsFloat(TRSNativeFloat)	Stores a floating point number in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)
	SetAsInteger(Integer)	Stores an integer in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)
	SetAsInterface(IUnknown)	Stores an interface in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)
	SetAsObject(TObject)	Stores an object in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)
	SetAsPointer(Pointer)	Stores a pointer in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)
	SetAsString(String)	Stores a string in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)
	SetAsVariant(Variant)	Stores a variant in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)
	SetAsWideString(WideString)	Stores a wide string in the object. The previous value is discarded. (Inherited from GValue.TGCustomValue.)

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