TGColorSelect

The TGColorFrame is a small frame with border showing a specific color.

The TG16ColorSelector is a composite frame with 16 TGColorFrames.

The TGColorPopup is a popup containing a TG16ColorSelector and a
"More..." button which popups up a TGColorDialog allowing custom
color selection.

The TGColorSelect widget is like a checkbutton but instead of the
check mark there is color area with a little down arrow. When
clicked on the arrow the TGColorPopup pops up.

Selecting a color in this widget will generate the event:            
kC_COLORSEL, kCOL_SELCHANGED, widget id, pixel.                      
and the signal:                                                      
ColorSelected(Pixel_t pixel)

TGColorFrame 继承 TGFrame
Frame for color cell

TG16ColorSelector 继承 TGCompositeFrame
16 color cells

TGColorPopup 继承 TGCompositeFrame
Color selector popup

TGColorSelect 继承 TGCheckButton
Color selection checkbutton

class

TGColorFrame

   TGColorFrame(const TGWindow *p = 0, Pixel_t c = 0, Int_t n = 1);
/// TGColorFrame constructor.
/// The TGColorFrame is a small frame with border showing a specific color.

   virtual ~TGColorFrame() { }

   virtual Bool_t  HandleButton(Event_t *event);/// Handle button events in TGColorFrame.
   virtual void    DrawBorder();/// Draw TGColorFrame border.

   void     SetActive(Bool_t in) { fActive = in; gClient->NeedRedraw(this); }
   Pixel_t  GetColor() const { return fColor; }

TG16ColorSelector

   TG16ColorSelector(const TGWindow *p = 0);
/// TG16ColorSelector constructor.
/// The TG16ColorSelector is a composite frame with 16 TGColorFrames.

   virtual ~TG16ColorSelector();/// TG16ColorSelector destructor.

   virtual Bool_t ProcessMessage(Long_t msg, Long_t parm1, Long_t parm2);/// Process messages for TG16ColorSelector.

   void    SetActive(Int_t newat);/// Set active color frame.
   Int_t   GetActive() { return fActive; }

TGColorPopup

   TGColorPopup(const TGWindow *p = 0, const TGWindow *m = 0, Pixel_t color = 0);
/// TGColorPopup constructor.
/// The TGColorPopup is a popup containing a TG16ColorSelector and a "More..."
/// button which popups up a TGColorDialog allowing custom color selection.

   virtual ~TGColorPopup();/// TGColorPopup destructor.

   virtual Bool_t HandleButton(Event_t *event);/// Handle mouse button events for TGColorPopup.
   virtual Bool_t ProcessMessage(Long_t msg, Long_t parm1, Long_t parm2);/// Process messages for TGColorPopup.

   void    PlacePopup(Int_t x, Int_t y, UInt_t w, UInt_t h);/// Popup TGColorPopup at x,y position
   void    EndPopup();/// Ungrab pointer and unmap window.
   void    PreviewColor(Pixel_t color);/// Emit a signal to see preview.
   void    PreviewAlphaColor(ULong_t color);/// Emit a signal to see preview.

TGColorSelect

   TGColorSelect(const TGWindow *p = 0, Pixel_t color = 0,
                 Int_t id = -1);
/// TGColorSelect constructor.
/// The TGColorSelect widget is like a checkbutton but instead of the check
/// mark there is color area with a little down arrow.
/// When clicked on the arrow the TGColorPopup pops up.

   virtual ~TGColorSelect();/// TGColorSelect destructor.

   virtual Bool_t HandleButton(Event_t *event);/// Handle button events for TGColorSelect.
   virtual Bool_t ProcessMessage(Long_t msg, Long_t parm1, Long_t parm2);/// Process messages for TGColorSelect.

   void    SetColor(Pixel_t color, Bool_t emit = kTRUE);/// Set color.
   void    SetAlphaColor(ULong_t color, Bool_t emit = kTRUE);/// Set color.
   Pixel_t GetColor() const { return fColor; }
   void    Enable(Bool_t on = kTRUE);  //*TOGGLE* *GETTER=IsEnabled  /// Set state of widget as enabled.
   void    Disable();/// Set state of widget as disabled.

   // dummy methods just to remove from context menu
   void SetDown(Bool_t on = kTRUE, Bool_t emit = kFALSE) { TGButton::SetDown(on, emit); }
   void Rename(const char *title)  { TGTextButton::SetTitle(title); }
   void SetEnabled(Bool_t e = kTRUE) {TGButton::SetEnabled(e); }

   virtual TGDimension GetDefaultSize() const { return TGDimension(43, 21); }
   virtual void SavePrimitive(std::ostream &out, Option_t * = "");
/// Save a color select widget as a C++ statement(s) on output stream out

   virtual void ColorSelected(Pixel_t color = 0)
            { Emit("ColorSelected(Pixel_t)", color ? color : GetColor()); }  //*SIGNAL*
   virtual void AlphaColorSelected(ULong_t colptr = 0)
            { Emit("AlphaColorSelected(ULong_t)", colptr); }  //*SIGNAL*

code

example