Logo ROOT  
Reference Guide
simpleTableTest.C File Reference

Detailed Description

This TableTest class is a simple example of how to use a TGSimpleTable that creates and owns it's own TGSimpleTableInterface.

TableTest inherits from TGMainFrame to create a top level frame to embed the TGTable in. First the data needed is created. Then the TGSimpleTable is created using this data. In the end, the table is added to the TGMainFrame that is the TableTest and the necessary calls to correctly draw the window are made. For more information about the use of TGSimpleTable see it's documentation.

#include <iostream>
#include <TApplication.h>
#include <TGClient.h>
#include <TGButton.h>
#include <TGFrame.h>
#include <TGLayout.h>
#include <TGWindow.h>
#include <TGLabel.h>
#include <TGNumberEntry.h>
#include <TString.h>
#include <TGButtonGroup.h>
#include <TGMenu.h>
#include <TGSimpleTable.h>
// A little class to automatically handle the generation of unique
// widget ids.
class IDList {
Int_t nID ; // Generates unique widget IDs.
IDList() : nID(0) {}
~IDList() {}
Int_t GetUnID(void) { return ++nID ; }
} ;
class TableTest : public TGMainFrame {
IDList IDs ; // Generator for unique widget IDs.
Double_t **fData;
UInt_t fNDataRows;
UInt_t fNDataColumns;
UInt_t fNTableRows;
UInt_t fNTableColumns;
TGSimpleTable *fSimpleTable;
TableTest(const TGWindow *p, UInt_t ndrows, UInt_t ndcols,
UInt_t ntrows, UInt_t ntcols, UInt_t w = 100, UInt_t h = 100) ;
virtual ~TableTest() ;
void DoExit() ;
TGSimpleTable *GetTable() { return fSimpleTable; }
ClassDef(TableTest, 0)
TableTest::TableTest(const TGWindow *p, UInt_t ndrows, UInt_t ndcols,
UInt_t ntrows, UInt_t ntcols, UInt_t w, UInt_t h)
: TGMainFrame(p, w, h), fData(0), fNDataRows(ndrows), fNDataColumns(ndcols),
fNTableRows(ntrows), fNTableColumns(ntcols), fSimpleTable(0)
SetCleanup(kDeepCleanup) ;
Connect("CloseWindow()", "TableTest", this, "DoExit()") ;
DontCallClose() ;
// Create the needed data.
Int_t i = 0, j = 0;
fData = new Double_t*[fNDataRows];
for (i = 0; i < (Int_t)fNDataRows; i++) {
fData[i] = new Double_t[fNDataColumns];
for (j = 0; j < (Int_t)fNDataColumns; j++) {
fData[i][j] = 10 * i + j;
// Create the table and add it to the TableTest that is a TGMainFrame.
fSimpleTable = new TGSimpleTable(this, IDs.GetUnID(), fData, fNTableRows,
AddFrame(fSimpleTable, new TGLayoutHints(kLHintsExpandX | kLHintsExpandY));
// Calls to layout and draw the TableTest that is a TGMainFrame.
SetWindowName("TGSimpleTable Test") ;
MapSubwindows() ;
Resize(GetDefaultWidth()+20, 600) ;
MapWindow() ;
} ;
// Destructor
UInt_t i = 0;
for (i = 0; i < fNDataRows; i++) {
delete[] fData[i];
delete[] fData;
Cleanup() ;
void TableTest::DoExit()
// Exit this application via the Exit button or Window Manager.
// Use one of the both lines according to your needs.
// Please note to re-run this macro in the same ROOT session,
// you have to compile it to get signals/slots 'on place'.
DeleteWindow(); // to stay in the ROOT session
// gApplication->Terminate(); // to exit and close the ROOT session
TGSimpleTable *simpleTableTest(UInt_t ndrows = 500, UInt_t ndcols = 20,
UInt_t ntrows = 50, UInt_t ntcols = 10) {
TableTest *test = new TableTest(0, ndrows, ndcols, ntrows, ntcols, 500, 200);
return test->GetTable();
#define h(i)
Definition: RSha256.hxx:106
int Int_t
Definition: RtypesCore.h:45
unsigned int UInt_t
Definition: RtypesCore.h:46
double Double_t
Definition: RtypesCore.h:59
#define ClassDef(name, id)
Definition: Rtypes.h:325
@ kDeepCleanup
Definition: TGFrame.h:50
@ kLHintsExpandY
Definition: TGLayout.h:38
@ kLHintsExpandX
Definition: TGLayout.h:37
RooCmdArg Layout(Double_t xmin, Double_t xmax=0.99, Double_t ymin=0.95)
Definition: test.py:1
Roel Aaij 13/07/2007

Definition in file simpleTableTest.C.