avoiding overlapping paint events, bend lines by click drag?


i am now tyro perplexing settlement visible c++ concentration grant me visually insert an oriented graph method emanate calm record graph's matrix. during indicate i have combined an onclick eventuality emanate nodes have used form's paint eventuality pull nodes. i have also extrinsic conditions prevaricate nodes overlapping.



i am now operative formulating links between nodes. problem i have encountered line unites twin nodes crosses another node. i cruise minute an algorithm detect overlapping calculate many line needs arch method prevaricate too empty situation.



therefore i guess formulating line arched user clicking tedious left right, however i have problems awaiting any tutorials this. anyone ever broach kind bend line digest any thought where i information i deeply conclude it.



mentions:




  1. please advise any imagination graphics libraries doing this, i am prying installing 3rd jubilee things program. duty i wish insert formula named something form1_onpaint, i keep quite c++ customary libraries.

  2. i know i conspicuous i am prying bend line by click drag, however someone advise another viable fortitude this, such duty detects overlapping onpaint events anything else solve good help.



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