nvda

b1a05167 - In Firefox with multi-process enabled, browse mode and editable text fields now function correctly. (#6380)

In Firefox with multi-process enabled, browse mode and editable text fields now function correctly. (#6380) nvdaHelperRemote: Use SendMessageCallback instead of SendMessage to execute most cross-thread calls. This is necessary for Firefox multi-process. When we use SendMessage to execute calls in the main thread, outgoing cross-process COM calls fail with RPC_E_CANTCALLOUT_ININPUTSYNCCALL; see Mozilla bug 1297549 comment 14. We avoid this by instead using PostMessage and waiting on an event. Even though this is only relevant to Firefox multi-process right now, this applies to any case where we might call a COM proxy in a cross-thread call. execInWindow now uses SendMessageCallback. Virtual buffer backends now use execInWindow to initialize/terminate the render thread instead of their own message/hook.