pub type RenderImageCallbackType = extern "C" fn(RefAny, RenderImageCallbackInfo) -> ImageRef;Expand description
Callback type that renders an OpenGL texture
IMPORTANT: In azul-core, this is stored as CoreRenderImageCallbackType = usize
to avoid circular dependencies. The actual function pointer is cast to usize for
storage in the data model, then unsafely cast back to this type when invoked.