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-rw-r--r--src/drivers/X11/Fl_X11_Screen_Driver.cxx2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/drivers/X11/Fl_X11_Screen_Driver.cxx b/src/drivers/X11/Fl_X11_Screen_Driver.cxx
index b8056ff0d..0e1864291 100644
--- a/src/drivers/X11/Fl_X11_Screen_Driver.cxx
+++ b/src/drivers/X11/Fl_X11_Screen_Driver.cxx
@@ -796,6 +796,8 @@ Fl_RGB_Image *Fl_X11_Screen_Driver::read_win_rectangle(int X, int Y, int w, int
sx *= s; sy *= s; sw *= s; sh *= s;
}
if (win && !allow_outside && int(s) != s) {
+ ws = (w+1) * s; // matches what Fl_Graphics_Driver::cache_size() does
+ hs = (h+1) * s;
if (Xs + ws >= int(win->w()*s)) ws = win->w()*s - Xs -1;
if (Ys + hs >= int(win->h()*s)) hs = win->h()*s - Ys -1;
}