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Dec 29, 2018 at 12:46 comment added user313992 And of course, the window will have to be mapped in order to generate Expose events; however, it could be mapped and fully hidden, in which case no expose events will be generated.
Dec 29, 2018 at 12:41 comment added user313992 The client will have to either call XSelectInput() with ExposureMask or set it in the event_mask when creating the window. You should read the one page doc the links from my answer point to -- it contains just everything about X11 programming, except for the X11 extensions.
Dec 29, 2018 at 6:03 comment added Nishant When you say "the X11 server will send an Expose event to the X11 client", does that mean client has to do something for that? Perhaps map? But wait that might map the whole window?
Dec 29, 2018 at 5:54 vote accept Nishant
Dec 28, 2018 at 20:40 history edited user313992 CC BY-SA 4.0
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Dec 28, 2018 at 20:32 history answered user313992 CC BY-SA 4.0