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-rw-r--r--NK_C_API.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/NK_C_API.h b/NK_C_API.h
index b1bdf1e..43e5631 100644
--- a/NK_C_API.h
+++ b/NK_C_API.h
@@ -747,7 +747,8 @@ extern "C" {
/**
* Get progress value of current long operation.
* Storage only
- * @return int in range 0-100 or -1 if device is not busy
+ * @return int in range 0-100 or -1 if device is not busy or -2 if an
+ * error occured
*/
NK_C_API int NK_get_progress_bar_value();