object, unlike the case for basic data types where convenience functions such as
\helpref{GetLong}{wxvariantgetlong} can be used.
-Pointers to any \helpref{wxObject}{helpref} derived class can also easily be stored
+Pointers to any \helpref{wxObject}{wxobject} derived class can also easily be stored
in a wxVariant. wxVariant will then use wxWidgets' built-in RTTI system to set the
type name (returned by \helpref{GetType}{wxvariantgettype}) and to perform
type-safety checks at runtime.
An optional name member is associated with a wxVariant. This might be used, for example,
in CORBA or OLE automation classes, where named parameters are required.
-Note that as of wxWidgets 2.7.1, wxVariant is reference counted. Additionly, the
-conveniance macros {\bf DECLARE\_VARIANT\_OBJECT} and {\bf IMPLEMENT\_VARIANT\_OBJECT}
-were added so that adding (limited) support for conversion to and from wxVariant
-can be very easily implemented without modifiying either the wxVariant or the class
-to be stored by wxVariant. Since assignement operators cannot be declared outside
-the class, the shift left operators are used like this:
+Note that as of wxWidgets 2.7.1, wxVariant is \helpref{reference counted}{trefcount}.
+Additionally, the convenience macros {\bf DECLARE\_VARIANT\_OBJECT} and
+{\bf IMPLEMENT\_VARIANT\_OBJECT} were added so that adding (limited) support
+for conversion to and from wxVariant can be very easily implemented without modifying
+either wxVariant or the class to be stored by wxVariant. Since assignment operators
+cannot be declared outside the class, the shift left operators are used like this:
\begin{verbatim}
// in the header file
IMPLEMENT_VARIANT_OBJECT(wxBitmap)
\end{verbatim}
+Note that as of wxWidgets 2.9.0, wxVariantData no longer inherits from wxObject
+and wxVariant no longer uses the type-unsafe wxList class for list
+operations but the type-safe wxVariantList class.
+
\wxheading{Derived from}
\helpref{wxObject}{wxobject}
<wx/variant.h>
+\wxheading{Library}
+
+\helpref{wxBase}{librarieslist}
+
\wxheading{See also}
\helpref{wxVariantData}{wxvariantdata}
\func{}{wxVariant}{\param{const wxVariant\& }{variant}}
-Copy constructor.
+Copy constructor, uses \helpref{reference counting}{trefcount}.
\func{}{wxVariant}{\param{const wxChar*}{ value}, \param{const wxString\& }{name = ``"}}
Construction from a double-precision floating point value.
-\func{}{wxVariant}{\param{const wxList\&}{ value}, \param{const wxString\& }{name = ``"}}
+\func{}{wxVariant}{\param{const wxVariantList\&}{ value}, \param{const wxString\& }{name = ``"}}
Construction from a list of wxVariant objects. This constructor
copies {\it value}, the application is still responsible for
Note that destructor is protected, so wxVariantData cannot usually
be deleted. Instead, \helpref{DecRef}{wxvariantdatadecref} should be called.
+See \helpref{reference-counted object destruction}{refcountdestruct} for more info.
\membersection{wxVariant::Append}\label{wxvariantappend}
Returns the floating point value.
+\membersection{wxVariant::GetList}\label{wxvariantgetlist}
+
+\constfunc{wxVariantList &}{GetList}{\void}
+
+Returns a reference to the wxVariantList class used by
+wxVariant if this wxVariant is currently a list of variants.
+
\membersection{wxVariant::GetLong}\label{wxvariantgetlong}
\constfunc{long}{GetLong}{\void}
\constfunc{wxString}{GetType}{\void}
-Returns the value type as a string. The built-in types are: bool, char, date, double, list, long, string, stringlist, time, void*.
+Returns the value type as a string. The built-in types are: bool, char, datetime, double, list, long, string, arrstring, void*.
If the variant is null, the value type returned is the string ``null" (not the empty string).
\func{void}{operator $=$}{\param{wxObject* }{value}}
-\func{void}{operator $=$}{\param{const wxList\& }{value}}
+\func{void}{operator $=$}{\param{const wxVariantList\& }{value}}
\func{void}{operator $=$}{\param{const wxDateTime\& }{value}}
\func{void}{operator $=$}{\param{const TIMESTAMP\_STRUCT* }{value}}
-Assignment operators.
+Assignment operators, using \helpref{reference counting}{trefcount} when possible.
\membersection{wxVariant::operator $==$}\label{wxvarianteq}
\constfunc{bool}{operator $==$}{\param{wxObject* }{value}}
-\constfunc{bool}{operator $==$}{\param{const wxList\& }{value}}
+\constfunc{bool}{operator $==$}{\param{const wxVariantList\& }{value}}
\constfunc{bool}{operator $==$}{\param{const wxArrayString\& }{value}}
\constfunc{bool}{operator $!=$}{\param{wxObject* }{value}}
-\constfunc{bool}{operator $!=$}{\param{const wxList\& }{value}}
+\constfunc{bool}{operator $!=$}{\param{const wxVariantList\& }{value}}
\constfunc{bool}{operator $!=$}{\param{const wxArrayString\& }{value}}
Operator for implicit conversion to a pointer to a \helpref{wxDateTime}{wxdatetime}, using \helpref{wxVariant::GetDateTime}{wxvariantgetdatetime}.
+
+
+%% wxVariantData
+
+
\section{\class{wxVariantData}}\label{wxvariantdata}
-The {\bf wxVariantData} is used to implement a new type for wxVariant. Derive from wxVariantData,
-and override the pure virtual functions.
+The {\bf wxVariantData} class is used to implement a new type for \helpref{wxVariant}{wxvariant}.
+Derive from wxVariantData, and override the pure virtual functions.
-wxVariantData is reference counted, but you don't normally have to care about this, as
-wxVariant manages the count automatically. However, incase your application needs to take
+wxVariantData is \helpref{reference counted}{refcount}, but you don't normally have to care about this,
+as wxVariant manages the count automatically. However, in case your application needs to take
ownership of wxVariantData, be aware that the object is created with reference count of 1,
and passing it to wxVariant will not increase this. In other words, \helpref{IncRef}{wxvariantdataincref}
needs to be called only if you both take ownership of wxVariantData and pass it to a wxVariant.
instance. Instead, \helpref{DecRef}{wxvariantdatadecref} will delete the object automatically
when the reference count reaches zero.
-\wxheading{Derived from}
-
-\helpref{wxObject}{wxobject}
-
\wxheading{Include files}
<wx/variant.h>
+\wxheading{Library}
+
+\helpref{wxBase}{librarieslist}
+
\wxheading{See also}
\helpref{wxVariant}{wxvariant}
automatically deleted.
Note that destructor of wxVariantData is protected, so delete
-cannot be used as normal. Instead, DecRef should be called.
+cannot be used as normal. Instead, \helpref{DecRef}{wxvariantdatadecref} should be called.
+
+
\membersection{wxVariantData::Eq}\label{wxvariantdataeq}
\helpref{RTTI overview}{runtimeclassoverview}\\
\helpref{wxDynamicCast}{wxdynamiccast}
+
projects / wxWidgets.git / blobdiff