--- a/src/DLD-FUNCTIONS/__init_fltk__.cc
+++ b/src/DLD-FUNCTIONS/__init_fltk__.cc
@@ -1574,6 +1574,10 @@
       {
         Matrix pos = fp.get_position ().matrix_value ();
 
+        Matrix screen_size = screen_size_pixels ();
+
+        pos = convert_position (pos, fp.get_units (), "pixels", screen_size);
+
         int x = pos(0);
         int y = pos(1);
         int w = pos(2);

--- a/src/graphics.cc
+++ b/src/graphics.cc
@@ -411,10 +411,9 @@
   return new_font_size;
 }
 
-static Matrix
+Matrix
 convert_position (const Matrix& pos, const caseless_str& from_units,
-                  const caseless_str& to_units,
-                  const Matrix& parent_dim = Matrix (1, 2, 0.0))
+                  const caseless_str& to_units, const Matrix& parent_dim)
 {
   Matrix retval (1, pos.numel ());
   double res = 0;
@@ -636,7 +635,7 @@
 }
 
 // This function always returns the screensize in pixels
-static Matrix
+Matrix
 screen_size_pixels (void)
 {
   graphics_object obj = gh_manager::get_object (0);

--- a/src/graphics.h.in
+++ b/src/graphics.h.in
@@ -5486,4 +5486,11 @@
 // This function is NOT equivalent to the scripting language function gca.
 OCTINTERP_API graphics_handle gca (void);
 
+extern OCTINTERP_API Matrix 
+convert_position (const Matrix& pos, const caseless_str& from_units,
+                  const caseless_str& to_units,
+                  const Matrix& parent_dim = Matrix (1, 2, 0.0));
+
+extern OCTINTERP_API Matrix screen_size_pixels (void);
+
 #endif