HongDi science & technology co.ltd Software

FreeDesktop 

It is a desktop draw tool, can lock desktop,and draw line on it free,you can set line's color or width.Clear the points(lines) that you drawed(when you clear on Desktop,it will be magic)!,for education,demo,explaining,for doodling too.
builder cad graphic component draw vector line rectangle

TCAD for Borland Delphi&C++ Builder 

TCAD is a component that will help you write vector graphics applications. Shapes can be interacted with by mouse or code. It is easy to use, effective and powerful. It will save you valuable time.
builder cad graphic component draw vector line rectangle

TCAD for Delphi&BCB&Kylix 

TCAD is a component that will help you write vector graphics applications. Shapes can be interacted with by mouse or code. It is easy to use, effective and powerful. It will save you valuable time.
builder cad graphic component draw vector line rectangle