在HDevelop中

dev_open_window (0, 0, 300, 300, 'black', WindowHandle)
gen_region_line (RegionLines, 100, 50, 150, 250)
gen_region_line (RegionLines1, 150, 50, 100, 250)

dev_display(RegionLines)
dev_display(RegionLines1)

dev_set_color ('yellow')
intersection (RegionLines, RegionLines1, RegionIntersection)
*獲得區域的交集
*引數3：輸出區域

dev_display(RegionIntersection)
 

在Qt Creator中

  HObject  ho_RegionLines, ho_RegionLines1, ho_RegionIntersection;
  HTuple  hv_WindowHandle;

  SetWindowAttr("background_color","black");
  OpenWindow(0,0,300,300,0,"visible","",&hv_WindowHandle);
  HDevWindowStack::Push(hv_WindowHandle);
  GenRegionLine(&ho_RegionLines, 100, 50
 
, 150, 250);
  GenRegionLine(&ho_RegionLines1, 150, 50, 100, 250);

  if (HDevWindowStack::IsOpen())
    DispObj(ho_RegionLines, HDevWindowStack::GetActive());
  if (HDevWindowStack::IsOpen())
    DispObj(ho_RegionLines1, HDevWindowStack::GetActive());

  if (HDevWindowStack::IsOpen())
    SetColor(HDevWindowStack::GetActive(),
 
"yellow");
  Intersection(ho_RegionLines, ho_RegionLines1, &ho_RegionIntersection);
  //獲得區域的交集
  //引數3：輸出區域

  if (HDevWindowStack::IsOpen())
    DispObj(ho_RegionIntersection, HDevWindowStack::GetActive());