Gantt > Using the Gantt Chart Through Examples > The Entry Point of the Sample
 
The Entry Point of the Sample
The main function of the sample is defined in <ILVHOME>/samples/gantt/month/src/month.cpp. If you look at the source code, you will find the follows tasks accomplished in the main function:
*The display is created.
*The main window of the sample is created.
*The customized Gantt chart object is created and added to the main window.
*The toolbar manipulating the Gantt chart is created.
*The graphic models of the Gantt chart are specified.
*The Gantt chart object is populated with data.
*The line grid is created for the Gantt chart.
*The colors of the Gantt chart are customized.
*The handle of the Gantt chart is hidden to make a mono view Gantt chart.
// --------------------------------------------------------------------------
int
main(int argc, char* argv[])
{
// Create the display
IlvDisplay* display
= new IlvDisplay("Rogue Wave Views Gantt Chart", 0, argc, argv);
if (!display || display->isBad()) {
IlvFatalError("Couldn't create display");
delete display;
return -1;
}
 
// Add the path to toolbar files
AppendGanttDataPath(display);
 
// Creating top view
IlvGadgetContainer* top = new IlvGadgetContainer
(display, "GanttChart", "Rogue Wave Views Gantt Chart Month Demo",
IlvRect(200, 100, 720, 376), IlFalse);
top->setDestroyCallback(Quit);
 
IlInt start, end;
IlUShort step, day;
IlvGanttComputeDay(3, 2002, day, start, end, step);
 
// Creating Chart
MonthGanttChart* gantt =
new MonthGanttChart(display, IlvRect(0, 32, 720, 344),
start, end, step, day, 160);
 
// Create the toolbar
IlvGanttToolBar* toolbar = new MonthToolBar(display, gantt);
top->addObject(toolbar);
 
// Specify the new graphic models
gantt->setSubNodeGraphicModel(CreateSubNodeGraphicModel(display));
gantt->setLineGraphicModel(CreateLineGraphicModel(display));
gantt->setLinkGraphicModel(CreateDoubleLinkGraphicModel(display));
gantt->setBreakGraphicModel(CreateBreakGraphicModel(display));
 
// Populate the Gantt chart with data
PopulateGanttChart(gantt, start, end, 12L);
 
// Add horizontal grids
IlvColor* steelblue3 = display->getColor("steelblue3");
IlvColor* midnightblue = display->getColor("midnightblue");
IlvPalette* gridPal = display->getPalette(steelblue3, midnightblue);
IlvGanttLineGrid* linGrid = new IlvGanttLineReliefGrid(gantt, gridPal);
gantt->setLineGrid(linGrid, IlFalse, 0);
 
// Attach the toolbar
IlvSetAttachment(toolbar, IlvTop, IlvFixedAttach, 0);
IlvSetAttachment(toolbar, IlvLeft, IlvFixedAttach);
IlvSetAttachment(toolbar, IlvRight, IlvFixedAttach);
IlvSetAttachment(toolbar, IlvHorizontal, IlvElasticAttach);
 
// Attach the Gantt chart
IlvSetAttachment(gantt, IlvTop, IlvFixedAttach, 32);
IlvSetAttachment(gantt, IlvBottom, IlvFixedAttach);
IlvSetAttachment(gantt, IlvLeft, IlvFixedAttach);
IlvSetAttachment(gantt, IlvRight, IlvFixedAttach);
IlvSetAttachment(gantt, IlvVertical, IlvElasticAttach);
IlvSetAttachment(gantt, IlvHorizontal, IlvElasticAttach);
 
// Add the Gantt chart
top->addObject(gantt);
// Showing top view
top->show();
// Color customizations
IlvColor* cyan = display->getColor("cyan");
IlvColor* darkorange = display->getColor("darkorange");
IlvColor* steelblue4 = display->getColor("steelblue4");
IlvPalette* pal = display->getPalette(cyan, darkorange);
gantt->getScale(0)->setPalette(pal);
gantt->getScale(1)->setPalette(pal);
gantt->setBackground(steelblue4);
gantt->getManagerView(0)->setBackground(steelblue4);
gantt->getManagerView(1)->setBackground(steelblue4);
IlvColor* antiquewhite = display->getColor("antiquewhite");
gantt->getGridPalette()->setBackground(antiquewhite);
 
// Enable the default grid
gantt->showGrid(IlTrue, IlTrue);
 
// Enable double buffering
gantt->setDoubleBuffering(IlTrue);
 
// Make only one view visible
gantt->moveHandle(IlvPoint(2000, 2000));
 
// Running main loop
IlvMainLoop();
return 0;
}
Version 6.3
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