library: libGpad #include "TButton.h"

# TButton

class description - source file - inheritance tree (.ps)

## class TButton : public TPad, public TAttText

| Inheritance Chart:

`TObject`

`TAttLine`

`TAttFill`

`TAttPad`

`TQObject`

<-

`TVirtualPad`

<-

`TPad`

`TAttText`

<-

`TButton`

<-

`TGroupButton` |

        private:

                   TButton(const TButton& org)
          TButton& operator=(const TButton& rhs)

        public:

                              TButton()
                              TButton(const char* title, const char* method, Double_t x1, Double_t y1, Double_t x2, Double_t y2)
                      virtual ~TButton()
               static TClass* Class()
                 virtual void Divide(Int_t nx = 1, Int_t ny = 1, Float_t xmargin = 0.01, Float_t ymargin = 0.01, Int_t color = 0)
                 virtual void Draw(Option_t* option)
                 virtual void ExecuteEvent(Int_t event, Int_t px, Int_t py)
               virtual Bool_t GetFraming()
          virtual const char* GetMethod() const
              virtual TClass* IsA() const
                 virtual void Paint(Option_t* option)
                 virtual void PaintModified()
                 virtual void Range(Double_t x1, Double_t y1, Double_t x2, Double_t y2)
                 virtual void SavePrimitive(ofstream& out, Option_t* option)
                 virtual void SetBorderMode(Short_t bordermode)
                 virtual void SetFraming(Bool_t f = 1)
                 virtual void SetGrid(Int_t valuex = 1, Int_t valuey = 1)
                 virtual void SetLogx(Int_t value = 1)
                 virtual void SetLogy(Int_t value = 1)
                 virtual void SetMethod(const char* method)
                 virtual void SetName(const char* name)
                 virtual void ShowMembers(TMemberInspector& insp, char* parent)
                 virtual void Streamer(TBuffer& b)
                         void StreamerNVirtual(TBuffer& b)
                 virtual void x3d(Option_t* option)

### Data Members

        private:

          Bool_t fFocused  If cursor is in...
          Bool_t fFraming  True if you want a frame to be painted when pressed

        protected:

          TString fMethod  Method to be executed by this button

## Class Description

      A TButton object is a user interface object.
      A TButton has a name and an associated action.
      When the button is clicked with the left mouse button, the cooresponding
      action is executed.
      A Tbutton can be created by direct invokation of the constructors
      or via the graphics editor.
      The Action can be set via TButton::SetMethod.
      The action can be any command. Examples of actions:
         "34+78" When the button is clicked, the result of addition is printed.
         ".x macro.C" . Clicking the button executes the macro macro.C
      The action can be modified at any time via TButton::SetMethod.

      To modify the layout/size/contents of one or several buttons
      in a canvas, you must set the canvas editable via TCanvas::SetEditable.
      By default a TCanvas is editable.
      By default a TDialogCanvas is not editable.
      TButtons are in general placed in a TDialogCanvas.

      A TButton being a TPad, one can draw graphics primitives in it
      when the TCanvas/TDialogCanvas is editable.

           Example of a macro creating a dialogcanvas with buttons
    void but() {
    //   example of a dialogcanvas with a few buttons

       TDialogCanvas *dialog = new TDialogCanvas("dialog","",200,300);

    // Create first button. Clicking on this button will execute 34+56
       TButton *but1 = new TButton("button1","34+56",.05,.8,.45,.88);
       but1->Draw();

    // Create second button. Clicking on this button will create a new canvas
       TButton *but2 = new TButton("canvas","c2 = new TCanvas("c2")",.55,.8,.95,.88);
       but2->Draw();

    // Create third button. Clicking on this button will invoke the browser
       but3 = new TButton("Browser","br = new TBrowser("br")",0.25,0.54,0.75,0.64);
       but3->SetFillColor(42);
       but3->Draw();

    // Create last button with no name. Instead a graph is draw inside the button
    // Clicking on this button will invoke the macro tutorials/graph.C
       button = new TButton("",".x tutorials/graph.C",0.15,0.15,0.85,0.38);
       button->SetFillColor(42);
       button->Draw();
       button->cd();

       Double_t x[8] = {0.08,0.21,0.34,0.48,0.61,0.7,0.81,0.92};
       Double_t y[8] = {0.2,0.65,0.4,0.34,0.24,0.43,0.75,0.52};
       TGraph *graph = new TGraph(8,x,y);
       graph->SetMarkerColor(4);
       graph->SetMarkerStyle(21);
       graph->Draw("lp");

       dialog->cd();
    }

       Executing the macro above produces the following dialogcanvas

/* */

TButton(): TPad()

    *-*-*-*-*-*-*-*-*-*-*Button default constructor*-*-*-*-*-*-*-*-*-*-*-*-*
    *-*                  ==========================

TButton(const char *title, const char *method, Double_t x1, Double_t y1,Double_t x2, Double_t y2) :TPad("button",title,x1,y1,x2,y2,18,2,1), TAttText(22,0,1,61,0.65)

    *-*-*-*-*-*-*-*-*-*-*Button normal constructor*-*-*-*-*-*-*-*-*-*-*-*-*-*
    *-*                  =========================

       Note that the button coordinates x1,y1,x2,y2 are always in the range [0,1]

~TButton()

    *-*-*-*-*-*-*-*-*-*-*Button default destructor*-*-*-*-*-*-*-*-*-*-*-*-*-*
    *-*                  =========================

void Draw(Option_t *option)

    *-*-*-*-*-*-*-*-*-*-*Draw this button with its current attributes*-*-*-*-*
    *-*                  ============================================

void ExecuteEvent(Int_t event, Int_t px, Int_t py)

    *-*-*-*-*-*-*-*-*-*-*Execute action corresponding to one event*-*-*-*
    *-*                  =========================================
      This member function is called when a Button object is clicked.

void Paint(Option_t *option)

    *-*-*-*-*-*-*-*-*-*-*Paint this button with its current attributes*-*-*-*
    *-*                  =============================================

void PaintModified()

void Range(Double_t x1, Double_t y1, Double_t x2, Double_t y2)

    *-*-*-*-*-*-*-*-*-*-*Set world coordinate system for the pad*-*-*-*-*-*-*
    *-*                  =======================================

void SavePrimitive(ofstream &out, Option_t *)

     Save primitive as a C++ statement(s) on output stream out

void SetFraming(Bool_t f)

     if framing is set, button will be highlighted

### Inline Functions

               TButton& operator=(const TButton& rhs)
                TButton TButton(const char* title, const char* method, Double_t x1, Double_t y1, Double_t x2, Double_t y2)
                   void Divide(Int_t nx = 1, Int_t ny = 1, Float_t xmargin = 0.01, Float_t ymargin = 0.01, Int_t color = 0)
            const char* GetMethod() const
                   void SetBorderMode(Short_t bordermode)
                 Bool_t GetFraming()
                   void SetGrid(Int_t valuex = 1, Int_t valuey = 1)
                   void SetLogx(Int_t value = 1)
                   void SetLogy(Int_t value = 1)
                   void SetMethod(const char* method)
                   void SetName(const char* name)
                   void x3d(Option_t* option)
                TClass* Class()
                TClass* IsA() const
                   void ShowMembers(TMemberInspector& insp, char* parent)
                   void Streamer(TBuffer& b)
                   void StreamerNVirtual(TBuffer& b)

Author: Rene Brun 01/07/96
Last update: root/gpad:$Name: $:$Id: TButton.cxx,v 1.8 2002/08/13 13:05:33 brun Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *