TGClient

class TGClient : public TObject

    protected:

      Bool_t DoRedraw()
      Bool_t HandleEvent(Event_t* event)
      Bool_t HandleMaskEvent(Event_t* event, Window_t wid)
      Bool_t ProcessOneEvent()

    public:

                           TGClient(const char* dpyName = "0")
                           TGClient(const TGClient&)
                   virtual ~TGClient()
                      void AddUnknownWindowHandler(TGUnknownWindowHandler* h)
            static TClass* Class()
                      void ForceRedraw()
                      void FreePicture(const TGPicture* pic)
                    Bool_t GetColorByName(const char* name, ULong_t& pixel) const
              FontStruct_t GetFontByName(const char* name) const
                   ULong_t GetHilite(ULong_t base_color) const
              TGMimeTypes* GetMimeTypeList() const
          const TGPicture* GetPicture(const char* name) const
          const TGPicture* GetPicture(const char* name, UInt_t new_width, UInt_t new_height) const
      const TGPicturePool* GetPicturePool() const
           const TGWindow* GetRoot() const
                   ULong_t GetShadow(ULong_t base_color) const
                 TGWindow* GetWindowById(Window_t sw) const
                    Bool_t HandleInput()
           virtual TClass* IsA() const
                      void NeedRedraw(TGWindow* w)
                    Bool_t ProcessEventsFor(TGWindow* w)
                      void ProcessLine(TString cmd, Long_t msg, Long_t parm1, Long_t parm2)
                      void RegisterPopup(TGWindow* w)
                      void RegisterWindow(TGWindow* w)
                      void RemoveUnknownWindowHandler(TGUnknownWindowHandler* h)
              virtual void ShowMembers(TMemberInspector& insp, char* parent)
              virtual void Streamer(TBuffer& b)
                      void StreamerNVirtual(TBuffer& b)
                      void UnregisterPopup(TGWindow* w)
                      void UnregisterWindow(TGWindow* w)
                      void WaitFor(TGWindow* w)
                      void WaitForUnmap(TGWindow* w)

Data Members

    protected:

             ULong_t fBackColor         default background color
             ULong_t fForeColor         default foreground color
             ULong_t fHilite            default hilite color
             ULong_t fShadow            default shadow color
             ULong_t fSelBackColor      default selection background color
             ULong_t fSelForeColor      default selection foreground color
             ULong_t fWhite             white color index
             ULong_t fBlack             black color index
           TGWindow* fRoot              root (base) window
               Int_t fXfd               file descriptor of connection to server
      TGPicturePool* fPicturePool       pixmap cache
        TGMimeTypes* fMimeTypeList      mimetype list
              Bool_t fGlobalNeedRedraw  true if at least one window needs to be redrawn
              Bool_t fForceRedraw       redraw widgets as soon as possible
          THashList* fWlist             list of frames
              TList* fPlist             list of popup windows used in HandleMaskEvent()
              TList* fUWHandlers        list of event handlers for unknown windows
         EGEventType fWaitForEvent      event to wait for
            Window_t fWaitForWindow     window in which to wait for event

Class Description

                                                                      
 TGClient                                                             
                                                                      
 Window client. In client server windowing systems, like X11 this     
 class is used to make the initial connection to the window server.   
 It is the only GUI class that does not inherit from TGObject.        
                                                                      

 Create a connection with the display sever on host DpyName and setup
 the complete GUI system, i.e., graphics contexts, fonts, etc. for all
 widgets.

 Get picture from pool. Picture must be freed using
 TGClient::FreePicture(). If picture is not found 0 is returned.

 Get picture with specified size from pool (picture will be scaled if
 necessary). Picture must be freed using TGClient::FreePicture(). If
 picture is not found 0 is returned.

 Free picture resource.

 Set redraw flags.

 Get a color by name. If color is found return kTRUE and pixel is
 set to the color's pixel value, kFALSE otherwise.

 Get a font by name. If font is not found, fixed font is returned,
 if fixed font also does not exist return 0 and print error.
 The loaded font needs to be freed using TVirtualX::DeleteFont().

 Return pixel value of hilite color based on base_color.

 Return pixel value of shadow color based on base_color.
 Shadow is 60% of base_color intensity.

 Add a TGWindow to the clients list of windows.

 Remove a TGWindow from the list of windows.

 Add a popup menu to the list of popups. This list is used to pass
 events to popup menus that are popped up over a transient window which
 is waited for (see WaitFor()).

 Remove a popup menu from the list of popups.

 Add handler for unknown (i.e. unregistered) windows.

 Remove handler for unknown (i.e. unregistered) windows.

 Find a TGWindow via its handle. If window is not found return 0.

 Closing down client: cleanup and close X connection.

 Process one event. This method should only be called when there is
 a GUI event ready to be processed. If event has been processed
 kTRUE is returned. If processing of a specific event type for a specific
 window was requested kFALSE is returned when specific event has been
 processed, kTRUE otherwise. If no more pending events return kFALSE.

 Handles input from the display server. Returns kTRUE if one or more
 events have been processed, kFALSE otherwise.

 Wait for window to be destroyed.

 Wait for window to be unmapped.

 Like gSystem->ProcessEvents() but then only allow events for w to
 be processed. For example to interrupt the processing and destroy
 the window, call gROOT->SetInterrupt() before destroying the window.

 Redraw all windows that need redrawing. Returns kFALSE if no redraw
 was needed, kTRUE otherwise.
 Only redraw the application's windows when the event queue
 does not contain expose event anymore.

 Handle a GUI event.

 Handle masked events only if window wid is the window for which the
 event was reported or if wid is a parent of the event window. The not
 masked event are handled directly. The masked events are:
 kButtonPress, kButtonRelease, kKeyPress, kKeyRelease, kEnterNotify,
 kLeaveNotify, kMotionNotify.

 Execute string "cmd" via the interpreter. Before executing replace
 in the command string the token $MSG, $PARM1 and $PARM2 by msg,
 parm1 and parm2, respectively. The function in cmd string must accept
 these as longs.

Inline Functions

             const TGWindow* GetRoot() const
                        void ForceRedraw()
        const TGPicturePool* GetPicturePool() const
                TGMimeTypes* GetMimeTypeList() const
                     TClass* Class()
                     TClass* IsA() const
                        void ShowMembers(TMemberInspector& insp, char* parent)
                        void Streamer(TBuffer& b)
                        void StreamerNVirtual(TBuffer& b)
                    TGClient TGClient(const TGClient&)