1 files changed, 2 insertions, 2 deletions
diff --git a/src/Fl_win32.cxx b/src/Fl_win32.cxx
index 651cbd20a..1dd66dc39 100644
--- a/src/Fl_win32.cxx
+++ b/src/Fl_win32.cxx
@@ -990,8 +990,8 @@ int Fl_X::fake_X_wm(const Fl_Window* w,int &X,int &Y, int &bt,int &bx, int &by)
         W = r.right - r.left;
         H = r.bottom - r.top;
         bx = w->x() - r.left;
-        bt = GetSystemMetrics(SM_CYCAPTION);
-        by = w->y() - r.top - bt;
+        by = r.bottom - w->y() - w->h(); // height of the bootm frame
+        bt = w->y() - r.top - by; // height of top caption bar
         xoff = bx;
         yoff = by + bt;
         dx = W - w->w();