Code

// Object Declare
IBoxItemPtr box1, box2;
IArrowItemPtr arr1, arr2;

box1=FCX->CreateBox(100, 100, 10, 10);
box2=FCX->CreateBox(200, 200, 10, 10);

arr1=FCX->CreateArrow(box1, box2);

// GDI Plus
FCX->Graphics->StartUp(geGdiPlus);

// Initialize
  FCX->BoxFrameColor=clBlack;
  FCX->ArrowColor=clBlack;

  FCX->MeasureUnit=uPixel;

// Box Decoration
  box1->Style=1;  // ellipse
  box1->set_PenWidth(2);
  box1->set_FillColor(clYellow);
  box1->set_FrameColor(clBlue);

// Arrow Decoration & Event Handlig
void __fastcall TForm1::FCXArrowSelected(TObject *Sender, IArrowItem *arrow)
{
  arrow->Color=clRed;
  arrow->PenWidth=1;
  arrow->PenStyle=3;
  arrow->ArrowHead=ahTriangle;
  arrow->ArrowBase=ahTriangle;
}

// Text Attach to Box
void __fastcall TForm1::FormCreate(TObject *Sender)
{
  IBoxItemPtr aa, bb;
  WideString ss;

  aa=FCX->CreateBox(200,200, 10, 10);
  aa->Tag=365;
  ss=IntToStr(aa->Tag);
  bb=FCX->CreateBox(aa->left, aa->top, 60, 30);
  bb->set_Text(ss);
  bb->Transparent=true;
  bb->Locked=true;
  bb->IgnoreLayout=true;

  FCX->CreateGroup(aa)->AttachToCorner(bb, 0);
}

// Multiple Box
  IBoxesPtr boxes;

  boxes = FCX->SelectedBoxes;
  for(int i=0;i<boxes->get_count();i++)
  {
	box1 = boxes->get_Item(i);
	box1->set_PenWidth(3);
	box1->set_FillColor(0xFF00FF);
	box1->set_FrameColor(0xFF0000);
  }