Add a canvas example

[barzamin]

fixes #24. the example just renders the following:

/cc @pomettini (you wanted to know about this ~12 days ago. sorry! hopefully this is a good reference)

[pomettini]

Thanks a lot for remembering, @barzamin, much appreciated! Will try it right away! 😄

[barzamin]

issue on win systems: uiDrawFillModeWinding is an enum value of type c_int; I think some MSVC typedefs don't match the way stuff works on *nix. best possible fix: stop using raw enum values from the -sys crate and actually write a draw mode enum.

error[E0308]: mismatched types
   --> iui\examples\canvas.rs:17:35
    |
 17 |         let path = Path::new(ctx, uiDrawFillModeWinding);
    |                                   ^^^^^^^^^^^^^^^^^^^^^ expected u32, found i32
 
error[E0308]: mismatched types
   --> iui\examples\canvas.rs:30:35
    |
 30 |         let path = Path::new(ctx, uiDrawFillModeWinding);
    |                                   ^^^^^^^^^^^^^^^^^^^^^ expected u32, found i32

[barzamin]

Sure, I can totally do that.

…

On Thu, Jan 31, 2019 at 9:04 PM Leonora ***@***.***> wrote: ***@***.**** requested changes on this pull request. ------------------------------ In iui/src/draw/path.rs <#58 (comment)> : > @@ -14,22 +12,37 @@ impl Drop for Path { } } +#[derive(Clone, Copy, PartialEq)] +pub enum FillMode { Could you add a doc comment onto here? Aside from this the PR looks good, thanks so much! — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#58 (review)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ATM34Q7qR3dulUxiLxqWeSWWQAVEnU78ks5vI67BgaJpZM4Z877x> .

fixed

[barzamin]

cc @NoraCodes

[NoraCodes]

Awesome, thank you!