how to fill Qlist in minimum time

[ChrisW67]

Please edit your post and put your code between [code] [/code] tags.
Then tell us what you expect us to do about it? There are a bunch of completely unknown functions, unknown numbers of loops, no idea what "a very long time", where you have measured the slow points to be, why you do this in a button click event is etc...

[shivendra46d]

M really sorry that i didnt gave the post in proper format. And thanks that you paid a heed to my problem but i sorted ot the problem , actually i am calculating large no of X and Y coordinates and storing them in list and then retriving these point to draw line in paint event . Its still complicated i have to disclose all my code thanks any way