X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4a11340a1c93bb8466ac097ba15a756275067b6a..e815120e412d91e79c98dd0afac2a1e399f10810:/docs/latex/wx/object.tex diff --git a/docs/latex/wx/object.tex b/docs/latex/wx/object.tex index 0e2c9d9cf1..8d8c6f07a8 100644 --- a/docs/latex/wx/object.tex +++ b/docs/latex/wx/object.tex @@ -1,6 +1,6 @@ \section{\class{wxObject}}\label{wxobject} -This is the root class of all wxWidgets classes. +This is the root class of many of the wxWidgets classes. It declares a virtual destructor which ensures that destructors get called for all derived class objects where necessary. @@ -20,6 +20,18 @@ such as wxPen, wxBitmap and others (see \helpref{this list}{refcountlist}). \helpref{wxClassInfo}{wxclassinfo}, \helpref{Debugging overview}{debuggingoverview},\rtfsp \helpref{wxObjectRefData}{wxobjectrefdata} +\wxheading{Derived from} + +No base class + +\wxheading{Include files} + + + +\wxheading{Library} + +\helpref{wxBase}{librarieslist} + \latexignore{\rtfignore{\wxheading{Members}}} \membersection{wxObject::wxObject}\label{wxobjectctor} @@ -219,6 +231,118 @@ you will need to cast to your own derived class. \wxheading{See also} \helpref{wxObject}{wxobject} +\helpref{wxObjectDataPtr}{wxobjectdataptr} +\helpref{Reference counting}{trefcount} + +\wxheading{Derived from} + +No base class + +\wxheading{Include files} + + + +\wxheading{Example} + +\begin{verbatim} + +// include file + +class MyCar: public wxObject +{ +public: + MyCar() { } + MyCar( int price ); + + bool IsOk() const { return m_refData != NULL; } + + bool operator == ( const MyCar& car ) const; + bool operator != (const MyCar& car) const { return !(*this == car); } + + void SetPrice( int price ); + int GetPrice() const; + +protected: + virtual wxObjectRefData *CreateRefData() const; + virtual wxObjectRefData *CloneRefData(const wxObjectRefData *data) const; + + DECLARE_DYNAMIC_CLASS(MyCar) +}; + + +// implementation + +class MyCarRefData: public wxObjectRefData +{ +public: + MyCarRefData() + { + m_price = 0; + } + + MyCarRefData( const MyCarRefData& data ) + : wxObjectRefData() + { + m_price = data.m_price; + } + + bool operator == (const MyCarRefData& data) const + { + return m_price == data.m_price; + } + + int m_price; +}; + + +#define M_CARDATA ((MyCarRefData *)m_refData) + +IMPLEMENT_DYNAMIC_CLASS(MyCar,wxObject) + +MyCar::MyCar( int price ) +{ + m_refData = new MyCarRefData(); + M_CARDATA->m_price = price; +} + +wxObjectRefData *MyCar::CreateRefData() const +{ + return new MyCarRefData; +} + +wxObjectRefData *MyCar::CloneRefData(const wxObjectRefData *data) const +{ + return new MyCarRefData(*(MyCarRefData *)data); +} + +bool MyCar::operator == ( const MyCar& car ) const +{ + if (m_refData == car.m_refData) return true; + + if (!m_refData || !car.m_refData) return false; + + return ( *(MyCarRefData*)m_refData == *(MyCarRefData*)car.m_refData ); +} + +void MyCar::SetPrice( int price ) +{ + UnShare(); + + M_CARDATA->m_price = price; +} + +int MyCar::GetPrice() const +{ + wxCHECK_MSG( IsOk(), -1, "invalid car" ); + + return (M_CARDATA->m_price); +} + +\end{verbatim} + +\wxheading{Library} + +\helpref{wxBase}{librarieslist} \latexignore{\rtfignore{\wxheading{Members}}}