Function sourceview5_sys::gtk_source_completion_provider_key_activates

pub unsafe extern "C" fn gtk_source_completion_provider_key_activates(
    self_: *mut GtkSourceCompletionProvider, 
    context: *mut GtkSourceCompletionContext, 
    proposal: *mut GtkSourceCompletionProposal, 
    keyval: c_uint, 
    state: GdkModifierType
) -> gboolean

This is supported on crate feature v5_0 only.