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Problem with draw and graphics

hamzeh dokoo

Hello to all

i wrote one program that can with use of graphic class in c# , draw a simple curve's.

now when i drag my form to out of sight in screen , my curves was disapear and will be erased.

why ? and how can i fix this problem ?

if you dont understand my purpose , please see the below :

befor Drag :

after Drag :

1 Reply

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Sam Hobbs16y ago
So obviously the window is not being re-painted. I have a basic understanding of how painting works in an unmanaged (not .Net) program; that is, using GDI but I am not sure how painting works in .Net, since it seems .Net makes graphics more flexible. Since however .Net uses Windows GDI or GDI+ there might be some illogical problems with it.

The main point is that it depends on how you are painting; your program is not re-painting when it should. Does that sound correct?
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