> Thanks for your answers, I do some test find. > 1.I put drawline() into my overrided draw(), and run > any widgets' redraw function of the window(Widget > p->redraw()) before push buttons, then find it will save my > draw pictures. But there is another problem, if run > drawline() in override draw(), it draws slowly and some > points lost own to somewhere is blocked, so is there any good > method, that can draw fastly and save the picture itself??
I'm not sure what you are describing here, so I'm afraid I don't know what to suggest... Can you clarify what you are doing a bit? > 2. I also tryed your A method, it draw fastly, but it > is complicated, because we have different size pen and > eraser, the classification is not easy. No, creating a drawing program is a hard problem, so it is not easy. I still think you might find the fl_offscreen approach easier and suggest you try that. If you just want to make a drawing program, there are a few alerady that you could try, or at least refer to, to see what they did. Perhaps this might help? http://www.rothcode.com/antipaint.tgz SELEX Galileo Ltd Registered Office: Sigma House, Christopher Martin Road, Basildon, Essex SS14 3EL A company registered in England & Wales. Company no. 02426132 ******************************************************************** This email and any attachments are confidential to the intended recipient and may also be privileged. If you are not the intended recipient please delete it from your system and notify the sender. You should not copy it or use it for any purpose nor disclose or distribute its contents to any other person. ******************************************************************** _______________________________________________ fltk mailing list fltk@easysw.com http://lists.easysw.com/mailman/listinfo/fltk
