TGComboBox

class description - source file - inheritance tree

class TGComboBox : public TGCompositeFrame


    public:

                    TGComboBox TGComboBox(TGWindow* p, Int_t id, UInt_t options = kHorizontalFrame|kSunkenFrame|kDoubleBorder, ULong_t back = fgWhitePixel)
                    TGComboBox TGComboBox(TGComboBox&)
                  virtual void ~TGComboBox()
                  virtual void AddEntry(TGString* s, Int_t id)
                  virtual void AddEntry(char* s, Int_t id)
                  virtual void AddEntry(TGLBEntry* lbe, TGLayoutHints* lhints)
                  virtual void Associate(TGWindow* w)
                       TClass* Class()
                  virtual void DrawBorder()
           virtual TGDimension GetDefaultSize()
      virtual const TGListBox* GetListBox()
                 virtual Int_t GetSelected()
            virtual TGLBEntry* GetSelectedEntry()
                virtual Bool_t HandleButton(Event_t* event)
                  virtual void InsertEntry(TGString* s, Int_t id, Int_t afterID)
                  virtual void InsertEntry(char* s, Int_t id, Int_t afterID)
                  virtual void InsertEntry(TGLBEntry* lbe, TGLayoutHints* lhints, Int_t afterID)
               virtual TClass* IsA()
                virtual Bool_t ProcessMessage(Long_t msg, Long_t parm1, Long_t parm2)
                  virtual void RemoveEntries(Int_t from_ID, Int_t to_ID)
                  virtual void RemoveEntry(Int_t id)
                  virtual void Select(Int_t id)
                  virtual void SetTopEntry(TGLBEntry* e, TGLayoutHints* lh)
                  virtual void ShowMembers(TMemberInspector& insp, char* parent)
                  virtual void Streamer(TBuffer& b)

  Data Members

    protected:

                        Int_t fComboBoxId  combobox widget id
                   TGLBEntry* fSelEntry    selected item frame
          TGScrollBarElement* fDDButton    button controlling drop down of popup
             TGComboBoxPopup* fComboFrame  popup containing a listbox
                   TGListBox* fListBox     the listbox with text items
      static const TGPicture* fBpic        down arrow picture used in fDDButton
       static const TGWindow* fMsgWindow   window handling combobox messages
               TGLayoutHints* fLhs         layout hints for selected item frame
               TGLayoutHints* fLhb         layout hints for fDDButton
               TGLayoutHints* fLhdd        layout hints for fListBox

Class Description

                                                                      
 TGComboBox, TGComboBoxPopup                                          
                                                                      
 A combobox (also known as a drop down listbox) allows the selection  
 of one item out of a list of items. The selected item is visible in  
 a little window. To view the list of possible items one has to click 
 on a button on the right of the little window. This will drop down   
 a listbox. After selecting an item from the listbox the box will     
 disappear and the newly selected item will be shown in the little    
 window.                                                              
                                                                      
 The TGComboBox is user callable. The TGComboBoxPopup is a service    
 class of the combobox.                                               
                                                                      
 Selecting an item in the combobox will generate the event:           
 kC_COMMAND, kCM_COMBOBOX, combobox id, item id.

TGComboBox(const TGWindow *p, Int_t id, UInt_t options, ULong_t back) : TGCompositeFrame (p, 10, 10, options, back)

 Create a combo box widget.

~TGComboBox()

 Delete a combo box widget.

void DrawBorder()

 Draw border of combo box widget.

void SetTopEntry(TGLBEntry *e, TGLayoutHints *lh)

 Set a new combo box value (normally update of text string in
 fSelEntry is done via fSelEntry::Update()).

void Select(Int_t id)

 Make the selected item visible in the combo box window.

Bool_t HandleButton(Event_t *event)

 Handle mouse button events in the combo box.

Bool_t ProcessMessage(Long_t msg, Long_t, Long_t parm2)

 Process messages generated by the listbox and forward
 messages to the combobox message handling window. Parm2 contains
 the id of the selected listbox entry.

Inline Functions

             TGDimension GetDefaultSize()
                    void Associate(TGWindow* w)
                    void AddEntry(TGString* s, Int_t id)
                    void AddEntry(char* s, Int_t id)
                    void AddEntry(TGLBEntry* lbe, TGLayoutHints* lhints)
                    void InsertEntry(TGString* s, Int_t id, Int_t afterID)
                    void InsertEntry(char* s, Int_t id, Int_t afterID)
                    void InsertEntry(TGLBEntry* lbe, TGLayoutHints* lhints, Int_t afterID)
                    void RemoveEntry(Int_t id)
                    void RemoveEntries(Int_t from_ID, Int_t to_ID)
        const TGListBox* GetListBox()
                   Int_t GetSelected()
              TGLBEntry* GetSelectedEntry()
                 TClass* Class()
                 TClass* IsA()
                    void ShowMembers(TMemberInspector& insp, char* parent)
                    void Streamer(TBuffer& b)
              TGComboBox TGComboBox(TGComboBox&)

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