See the GAsyncResult documentation to know how to use this function.
If the operation is cancelled, the callback will only be called if
cancellable was not NULL. Source.searchContextForwardAsync takes
ownership of cancellable, so you can unref it after calling this function.
The asynchronous version of Source.searchContextForward.
See the documentation of Source.searchContextForward for more details.
See the GAsyncResult documentation to know how to use this function.
If the operation is cancelled, the callback will only be called if cancellable was not NULL. Source.searchContextForwardAsync takes ownership of cancellable, so you can unref it after calling this function.