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-rw-r--r--riscos/wimp.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/riscos/wimp.h b/riscos/wimp.h
index 3ac3ed4c4..f759e0487 100644
--- a/riscos/wimp.h
+++ b/riscos/wimp.h
@@ -27,6 +27,7 @@ struct eig_factors {
int ro_get_hscroll_height(wimp_w w);
+int ro_get_vscroll_width(wimp_w w);
struct eig_factors ro_read_eig_factors(os_mode mode);
void ro_convert_os_units_to_pixels(os_coord *os_units, os_mode mode);
void ro_convert_pixels_to_os_units(os_coord *pixels, os_mode mode);