diff --git a/src/Fl_win32.cxx b/src/Fl_win32.cxx
index 9eec99362..975175ded 100644
--- a/src/Fl_win32.cxx
+++ b/src/Fl_win32.cxx
@@ -2998,14 +2998,14 @@ void Fl_WinAPI_Window_Driver::capture_titlebar_and_borders(Fl_RGB_Image *&top, F
   int offset = r.left < 0 ? -r.left : 0;
   Fl_WinAPI_Screen_Driver *dr = (Fl_WinAPI_Screen_Driver *)Fl::screen_driver();
   if (htop && r.right - r.left > offset) {
-    top = dr->read_win_rectangle_unscaled(r.left+offset, r.top, r.right - r.left-offset, htop, 0);
+    top = dr->read_win_rectangle_unscaled(r.left+offset, r.top, r.right - r.left-offset, htop, 0, true);
     if (scaling != 1 && top)
       top->scale(ww, int(htop / scaling), 0, 1);
   }
   if (wsides) {
-    left = dr->read_win_rectangle_unscaled(r.left + offset, r.top + htop, wsides, int(h() * scaling), 0);
-    right = dr->read_win_rectangle_unscaled(r.right - wsides, r.top + htop, wsides, int(h() * scaling), 0);
-    bottom = dr->read_win_rectangle_unscaled(r.left+offset, r.bottom - hbottom, ww, hbottom, 0);
+    left = dr->read_win_rectangle_unscaled(r.left + offset, r.top + htop, wsides, int(h() * scaling), 0, true);
+    right = dr->read_win_rectangle_unscaled(r.right - wsides, r.top + htop, wsides, int(h() * scaling), 0, true);
+    bottom = dr->read_win_rectangle_unscaled(r.left+offset, r.bottom - hbottom, ww, hbottom, 0, true);
     if (scaling != 1) {
       if (left) left->scale(wsides, h(), 0, 1);
       if (right) right->scale(wsides, h(), 0, 1);
diff --git a/src/drivers/WinAPI/Fl_WinAPI_Screen_Driver.H b/src/drivers/WinAPI/Fl_WinAPI_Screen_Driver.H
index b038fc5f1..6fcd91e70 100644
--- a/src/drivers/WinAPI/Fl_WinAPI_Screen_Driver.H
+++ b/src/drivers/WinAPI/Fl_WinAPI_Screen_Driver.H
@@ -67,7 +67,7 @@ public:
   int dnd(int unused) FL_OVERRIDE;
   int compose(int &del) FL_OVERRIDE;
   Fl_RGB_Image *read_win_rectangle(int X, int Y, int w, int h, Fl_Window *win, bool may_capture_subwins, bool *did_capture_subwins) FL_OVERRIDE;
-  Fl_RGB_Image *read_win_rectangle_unscaled(int X, int Y, int w, int h, Fl_Window *win);
+  Fl_RGB_Image *read_win_rectangle_unscaled(int X, int Y, int w, int h, Fl_Window *win, bool screen_capture);
   int get_mouse(int &x, int &y) FL_OVERRIDE;
   void enable_im() FL_OVERRIDE;
   void disable_im() FL_OVERRIDE;
diff --git a/src/drivers/WinAPI/Fl_WinAPI_Screen_Driver.cxx b/src/drivers/WinAPI/Fl_WinAPI_Screen_Driver.cxx
index bfd316269..c53a7c71e 100644
--- a/src/drivers/WinAPI/Fl_WinAPI_Screen_Driver.cxx
+++ b/src/drivers/WinAPI/Fl_WinAPI_Screen_Driver.cxx
@@ -372,11 +372,15 @@ Fl_WinAPI_Screen_Driver::read_win_rectangle(
     if (ws < 1) ws = 1;
     if (hs < 1) hs = 1;
   }
-  return read_win_rectangle_unscaled(Fl_Scalable_Graphics_Driver::floor(X, s), Fl_Scalable_Graphics_Driver::floor(Y, s), ws, hs, win);
+  return read_win_rectangle_unscaled(Fl_Scalable_Graphics_Driver::floor(X, s), Fl_Scalable_Graphics_Driver::floor(Y, s), ws, hs, win, false);
 }
 
-Fl_RGB_Image *Fl_WinAPI_Screen_Driver::read_win_rectangle_unscaled(int X, int Y, int w, int h, Fl_Window *win)
+Fl_RGB_Image *Fl_WinAPI_Screen_Driver::read_win_rectangle_unscaled(int X, int Y, int w, int h,
+                                                                   Fl_Window *win, bool screen_capture)
 {
+  // When screen_capture is true, win is NULL and we read from the screen independently from any window.
+  // Otherwise win can be a window inside which to read or NULL to read from current offscreen.
+
   // Depth of image is always 3 here
 
   // Grab all of the pixels in the image...
@@ -390,15 +394,17 @@ Fl_RGB_Image *Fl_WinAPI_Screen_Driver::read_win_rectangle_unscaled(int X, int Y,
   int shift_x = 0; // X target shift if X modified
   int shift_y = 0; // Y target shift if X modified
 
-  if (X < 0) {
-    shift_x = -X;
-    w += X;
-    X = 0;
-  }
-  if (Y < 0) {
-    shift_y = -Y;
-    h += Y;
-    Y = 0;
+  if (!screen_capture) {
+    if (X < 0) {
+      shift_x = -X;
+      w += X;
+      X = 0;
+    }
+    if (Y < 0) {
+      shift_y = -Y;
+      h += Y;
+      Y = 0;
+    }
   }
 
   if (h < 1 || w < 1) return 0;            // nothing to copy