Printing line Plotting on windows default printer

I have a form with line plotting as a polar plotting with vectors.
there are lines and circles with different widths snd styles and colors. the form is working well.
Now, I want to print the plot using default windows printer.
How to send it to printer? any help pl.

:mad:

I have tried with form.printform.
all the content in the form got printed on a default printer.

But how do I select printer to set printer print properties.
any help pl.