location to store a UTF-8 encoded string of text holding context around the insertion point. If the function returns true, then you must free the result stored in this location with glib.global.gfree.
location to store byte index of the insertion cursor within text.
location to store byte index of the selection bound within text
TRUE if surrounding text was provided; in this case you must free the result stored in text.
Retrieves context around the insertion point.
Input methods typically want context in order to constrain input text based on existing text; this is important for languages such as Thai where only some sequences of characters are allowed.
This function is implemented by emitting the signalGtk.IMContext::retrieve-surrounding signal on the input method; in response to this signal, a widget should provide as much context as is available, up to an entire paragraph, by calling gtk.imcontext.IMContext.setSurroundingWithSelection.
Note that there is no obligation for a widget to respond to the ::retrieve-surrounding signal, so input methods must be prepared to function without context.