diff --git a/vlib/ui/ui_lin.v b/vlib/ui/ui_lin.v
new file mode 100644
index 0000000000..51da422885
--- /dev/null
+++ b/vlib/ui/ui_lin.v
@@ -0,0 +1,9 @@
+module ui
+
+fn focus_app(next, event, data voidptr) {
+}
+
+pub fn reg_key_vid() {
+}
+
+
diff --git a/vlib/ui/ui_win.v b/vlib/ui/ui_win.v
new file mode 100644
index 0000000000..51da422885
--- /dev/null
+++ b/vlib/ui/ui_win.v
@@ -0,0 +1,9 @@
+module ui
+
+fn focus_app(next, event, data voidptr) {
+}
+
+pub fn reg_key_vid() {
+}
+
+