From 643533b4b85cb31d181ad9f5399f013ea28f6662 Mon Sep 17 00:00:00 2001
From: ManoloFLTK <41016272+ManoloFLTK@users.noreply.github.com>
Date: Sun, 16 Jun 2019 23:41:51 +0200
Subject: Windows platform: resize all windows after screen configuration
 events

---
 src/Fl_win32.cxx | 14 +++++++++-----
 1 file changed, 9 insertions(+), 5 deletions(-)

(limited to 'src')

diff --git a/src/Fl_win32.cxx b/src/Fl_win32.cxx
index 23ebd6ccb..9c23bae40 100644
--- a/src/Fl_win32.cxx
+++ b/src/Fl_win32.cxx
@@ -1631,11 +1631,15 @@ static LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lPar
 	fl_i_own_selection[1] = 0;
 	return 1;
 
-      case WM_DISPLAYCHANGE: // occurs when screen configuration (number, position) changes
-	Fl::call_screen_init();
-	Fl::handle(FL_SCREEN_CONFIGURATION_CHANGED, NULL);
-	return 0;
-
+      case WM_DISPLAYCHANGE: {// occurs when screen configuration (number, size, position) changes
+        Fl::call_screen_init();
+        Fl_WinAPI_Screen_Driver *sd = (Fl_WinAPI_Screen_Driver*)Fl::screen_driver();
+        for (int ns = 0; ns < sd->screen_count(); ns++) {
+          sd->rescale_all_windows_from_screen(ns, sd->dpi[ns][0]/96);
+        }
+        Fl::handle(FL_SCREEN_CONFIGURATION_CHANGED, NULL);
+        return 0;
+      }
       case WM_CHANGECBCHAIN:
 	if ((hWnd == clipboard_wnd) && (next_clipboard_wnd == (HWND)wParam))
 	  next_clipboard_wnd = (HWND)lParam;
-- 
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