This is the verbatim text of the qregion.h include file. It is is provided only for illustration; the copyright remains with Troll Tech
/**************************************************************************** ** $Id: qregion.h,v 2.5 1997/10/09 13:11:05 agulbra Exp $ ** ** Definition of QRegion class ** ** Created : 940514 ** ** Copyright (C) 1994-1997 by Troll Tech AS. All rights reserved. ** *****************************************************************************/ #ifndef QREGION_H #define QREGION_H #include "qshared.h" #include "qrect.h" #include "qstring.h" class QRegion { public: enum RegionType { Rectangle, Ellipse }; QRegion(); QRegion( const QRect &, RegionType = Rectangle ); QRegion( const QPointArray &, bool winding=FALSE ); QRegion( const QRegion & ); ~QRegion(); QRegion &operator=( const QRegion & ); bool isNull() const; bool isEmpty() const; bool contains( const QPoint &p ) const; bool contains( const QRect &r ) const; void translate( int dx, int dy ); QRegion unite( const QRegion & ) const; QRegion intersect( const QRegion &) const; QRegion subtract( const QRegion & ) const; // Work around clash with the ANSI C++ keyword "xor". // // Use of QRegion::xor() is deprecated - you should use QRegion::eor(). // Calls to QRegion::xor() will work for now, but give a warning. // // If possible, compile the Qt library without this ANSI C++ feature enabled, // thus including both the old xor() and new eor() in the library, so old // binaries will continue to work (with the warning). // // We also hide the xor() function if there is a #define for xor, in // case someone is using #define xor ^ to work around deficiencies in // their compiler that cause problems with some other header files. // #if !(defined(__STRICT_ANSI__) && defined(_CC_GNU_)) && !defined(_CC_EDG_) && !defined(_CC_HP_) && !defined(_CC_HP_ACC_) && !defined(xor) QRegion xor( const QRegion & ) const; #endif QRegion eor( const QRegion & ) const; bool operator==( const QRegion & ) const; bool operator!=( const QRegion &r ) const { return !(operator==(r)); } #if defined(_WS_WIN_) HANDLE handle() const { return data->rgn; } #elif defined(_WS_PM_) HANDLE handle() const { return data->rgn; } #elif defined(_WS_X11_) Region handle() const { return data->rgn; } #endif friend QDataStream &operator<<( QDataStream &, const QRegion & ); friend QDataStream &operator>>( QDataStream &, QRegion & ); private: QRegion( bool ); QRegion copy() const; void detach(); #if defined(_WS_WIN_) QRegion winCombine( const QRegion &, int ) const; #endif void cmd( int id, void *, const QRegion * = 0, const QRegion * = 0 ); void exec( const QByteArray & ); struct QRegionData : public QShared { QByteArray bop; #if defined(_WS_WIN_) HANDLE rgn; #elif defined(_WS_PM_) HANDLE rgn; #elif defined(_WS_X11_) Region rgn; #endif } *data; #if defined(_WS_PM_) static HPS hps; #endif }; #define QRGN_SETRECT 1 // region stream commands #define QRGN_SETELLIPSE 2 // (these are internal) #define QRGN_SETPTARRAY_ALT 3 #define QRGN_SETPTARRAY_WIND 4 #define QRGN_TRANSLATE 5 #define QRGN_OR 6 #define QRGN_AND 7 #define QRGN_SUB 8 #define QRGN_XOR 9 /***************************************************************************** QRegion stream functions *****************************************************************************/ QDataStream &operator<<( QDataStream &, const QRegion & ); QDataStream &operator>>( QDataStream &, QRegion & ); #endif // QREGION_H