Re: nsIDOMCanvasRenderingContext2d embedding in 1.9.2 ?
Benjamin Smedberg <[email protected]>
| Newsgroups | gmane.comp.mozilla.devel.embedding |
|---|---|
| Message-ID | <[email protected]> |
On 11/8/10 8:40 AM, [email protected] wrote: > I'm extending my MozMFC example to handle rendering into a Win32 bitmap. I > start with the following ... > > nsCOMPtr<nsICanvasRenderingContextInternal> context; > context = > do_CreateInstance("@mozilla.org/content/canvas-rendering-context;1?id=2d", > &rv); This really doesn't make any sense. The way to get a canvas rendering context is to create a <canvas> element and then call .getContext('2d') on it. Otherwise your rendering context isn't actually backed by a drawing buffer. --BDS