For the first question, you could use a getter/setter e.g.
.property("format", +[](const foo& a) {
return a.format;
},
+[](foo& a, Format value) {
a.format = value;
})
For the second, char arrays are not currently bindable. Depending on what
you're trying to do you can use either: std:string, a vector of chars
(register_vector), or a memory_view.
On Friday, May 17, 2024 at 7:46:42 PM UTC-7 キャロウ マーク wrote:
> I have 2 issues. Despite much time poring over embind.html
> <https://emscripten.org/docs/porting/connecting_cpp_and_javascript/embind.html#>
> and bind.h
> <https://github.com/emscripten-core/emscripten/blob/main/system/include/emscripten/bind.h>
> I’ve
> been unable to find a solution.
>
> I have a struct in c that contains a uint32_t field that is set from
> values in an enum.
>
> typedef struct {
> uint32_t format;
> …
> } foo;
>
> enum Format { A = 5, B = 6};
>
> In my EMSCRIPTEN_BINDINGS block I have
>
> enum_<Format>("Format")
> .value(“A", A)
> .value(“B", B)
> ;
>
> emscripten::class_<foo>(“foo")
> .constructor<>()
> .property(“format", &foo::format)
> ...
> ;
>
>
> In JS I have
>
> var foo = new foo();
>
> …
>
> foo.format = Format.A;
>
>
>
> format is always set to zero. To get it set to the correct value I have to
> write
>
> foo.format = Format.A.value;
>
>
> I don’t want users of my API to need to know they have to do this. Is
> there a way to avoid it, by modifying the declaration of the .property, by
> using something other than an enum_<> to declare the possible values or
> some other way? I don’t want to modify the underlying c API.
>
>
>
> The second issue is that in a separate Params struct I have a field that
> is
>
> char swizzle[4];
>
>
> With
>
> .property(“swizzle", &Params::swizzle)
>
>
> in the class binding, I get
>
> /emsdk/upstream/emscripten/cache/sysroot/include/emscripten/wire.h:349:16:
> error: array 'new' cannot have initialization arguments
> 349 | return new T(v);
>
>
> How do I properly declare this property?
>
> Regards
>
> -Mark
>
>
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