diff --git a/ANNOUNCEMENT b/ANNOUNCEMENT
index 807f633634632fe5081038a4ffc1b47623c9ae4c..44a13d049e7302332a6f86cb69c3679c0eec1c2f 100644
--- a/ANNOUNCEMENT
+++ b/ANNOUNCEMENT
@@ -1,50 +1,9 @@
-FLTK 1.4 is based on the final release of FLTK 1.3.4. Later updates
-have been backported to 1.3.5 - 1.3.11 and branch-1.3 (Git).
+FLTK 1.5 is based on the release of FLTK 1.4.2. Later updates and
+bug fixes may be backported to 1.4.x (x > 2).
 
-FLTK 1.4 is intended to be mostly API compatible with FLTK 1.3.x so
-you don't need to change source code when you switch to FLTK 1.4.
-However, all programs must be recompiled with FLTK 1.4 because the
+FLTK 1.5 is intended to be mostly API compatible with FLTK 1.4.x so
+you don't need to change source code when you switch to FLTK 1.5.
+However, all programs must be recompiled with FLTK 1.5 because the
 ABI (Application Binary Interface) has changed.
 
-Potential source code conflicts are documented in chapter "Migrating
-Code from FLTK 1.3 to 1.4" of the user documentation [1].
-
-FLTK 1.4 adds some new widgets (e.g. Fl_Flex, Fl_Grid) for flexible GUI
-layout, Fl_Scheme_Choice for scheme selection by users, and more.
-Other widgets (Fl_Tabs, Fl_Tile, Fl_Spinner etc.) have been improved
-for better user experience.
-
-FLTK 1.4 supports HighDPI displays under Linux/Unix and Windows and
-improves HighDPI support on macOS. The initial screen scaling factor is
-read from the system and application windows can be zoomed (in/out/reset)
-by the user with ctrl/+/-/0 shortcuts, respectively.
-
-CMake support has been improved significantly and requires CMake 3.15 or
-higher, autotools/configure/make is still supported. The latter will be
-dropped in the next minor release (1.5.0).
-
-macOS is supported up to 15.3 "Sequoia".
-
-The platform dependent code in FLTK 1.4 was rewritten to enable easier
-porting to new platforms. Basically all platform dependent code has
-been isolated and implemented in virtual methods of "driver" classes.
-For details see 'src/drivers' and subdirectories.
-
-FLTK is now compatible with the Wayland platform on current Linux
-distributions and FreeBSD. The default build of the library on these
-platforms supports both X11 and Wayland in a "hybrid" library. Programs
-compiled and linked to this library start using Wayland if it is
-available at runtime and fall back to using X11 if not. Programs using
-X11 specific code that are not yet ported to Wayland can still be used
-on pure X11 systems or by disabling the Wayland support on startup so
-they fall back to using X11 only. This requires 'XWayland' support on
-Wayland enabled (Linux) systems.
-
-The current development branch on GitHub [2] is `master`. This will be
-changed to `branch-1.4` when development of FLTK 1.5.0 begins and 1.4
-will be switched to maintenance mode.
-
-
-[1] https://www.fltk.org/doc-1.4/ (HTML) and
-    https://www.fltk.org/doc-1.4/fltk.pdf (PDF)
-[2] https://github.com/fltk/fltk.git
+More info TBD.
diff --git a/CHANGES.txt b/CHANGES_1.4.txt
similarity index 100%
rename from CHANGES.txt
rename to CHANGES_1.4.txt
diff --git a/CMakeLists.txt b/CMakeLists.txt
index c1c5888ee5bf78a78a943b0d80d77c3698ace2a1..c8f24dde81f0a63fbb5d55f17bb51e0fd9f36d06 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -19,13 +19,10 @@
 # Set CMake minimum version first: must be set before `project()`
 #######################################################################
 
-# Minimum CMake version required by FLTK 1.4
+# Minimum CMake version required by FLTK 1.5
 
-# Note 1: Linking against OBJECT libraries (fluid, test) requires
-#         at least CMake 3.12.0
-# Note 2: Used in fluid since 05/2023,
-#         used for Windows (MSVC) shared lib builds much earlier
-# Note 3: More modern CMake features require 3.13...3.15 (Nov 2023)
+# Note 1: Currently the same as for FLTK 1.4.x but will likely be raised
+#         depending on new features introduced in FLTK 1.5.
 
 cmake_minimum_required(VERSION 3.15.0 FATAL_ERROR)
 
@@ -36,7 +33,7 @@ cmake_minimum_required(VERSION 3.15.0 FATAL_ERROR)
 # define the FLTK project and version
 #######################################################################
 
-project(FLTK VERSION 1.4.2)
+project(FLTK VERSION 1.5.0)
 
 #######################################################################
 # include macro and function definitions for general usage
@@ -60,7 +57,8 @@ endif()
 # Set FLTK_VERSION in the cache so user projects can access it,
 # for instance if FLTK is built as a subproject (FetchContent)
 
-set(FLTK_VERSION ${FLTK_VERSION} CACHE STRING "FLTK version" FORCE)
+set(FLTK_VERSION ${FLTK_VERSION} CACHE STRING
+    "FLTK version: generated, do not change" FORCE)
 
 #######################################################################
 # basic setup
diff --git a/FL/Enumerations.H b/FL/Enumerations.H
index 0fe8e03a7a4a0a0bb95ecc1eac5d28ebe8f08211..1a8b219bd7436041dcdd2ede3e1aa13862f78abf 100644
--- a/FL/Enumerations.H
+++ b/FL/Enumerations.H
@@ -36,7 +36,8 @@
 #  include "fl_types.h"
 #  include <FL/platform_types.h> // for FL_COMMAND and FL_CONTROL
 
-// Current FLTK version: 1.4.2
+// Keep the following comment in sync with the values below for searching
+// Current FLTK version: 1.5.0
 
 /** \name Version Numbers
 
@@ -58,14 +59,14 @@
 
    FLTK remains mostly source-code compatible between minor version changes.
  */
-#define FL_MINOR_VERSION        4
+#define FL_MINOR_VERSION        5
 
 /**
    The patch version for this library.
 
    FLTK remains binary compatible between patches.
  */
-#define FL_PATCH_VERSION        2
+#define FL_PATCH_VERSION        0
 
 /**
     The FLTK version number as a \em double.
diff --git a/FL/Fl_File_Chooser.H b/FL/Fl_File_Chooser.H
index 25114ff49e2f1bb7506dc32940052c03ea30a745..039832c2e9a6eeabfc3a7eb8c372532a6b4e542d 100644
--- a/FL/Fl_File_Chooser.H
+++ b/FL/Fl_File_Chooser.H
@@ -21,7 +21,7 @@
 // =======================================================================
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #ifndef Fl_File_Chooser_H
 #define Fl_File_Chooser_H
diff --git a/FL/Fl_Help_Dialog.H b/FL/Fl_Help_Dialog.H
index 42dd11793a77fea385e6a30ddd0d7fba003cabf0..3d75ea9f76db81e495917a817dc6cfc234a5ee91 100644
--- a/FL/Fl_Help_Dialog.H
+++ b/FL/Fl_Help_Dialog.H
@@ -21,7 +21,7 @@
 // ========================================================================
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #ifndef Fl_Help_Dialog_H
 #define Fl_Help_Dialog_H
diff --git a/README.md b/README.md
index 80658367a7316e97911253f7ccb1211736233100..dda1de1cd4ddd27d30d4ff0e8d622451617d6db7 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# README - Fast Light Tool Kit (FLTK) Version 1.4.2
+# README - Fast Light Tool Kit (FLTK) Version 1.5.0
 
 ## WHAT IS FLTK?
 
diff --git a/README.txt b/README.txt
index 8f7bf846a4f494feafdecd1af1ff8e98e90b157c..1e14c43e4045f85d37fd32f18cb19e3e2b4c2339 100644
--- a/README.txt
+++ b/README.txt
@@ -1,4 +1,4 @@
-README - Fast Light Tool Kit (FLTK) Version 1.4.2
+README - Fast Light Tool Kit (FLTK) Version 1.5.0
 -------------------------------------------------
 
 WHAT IS FLTK?
diff --git a/documentation/src/index.dox b/documentation/src/index.dox
index 5c208ffa85438759df7aa53d6388163478d199fc..6a51c1674fb846441863b06db80b5ba9dbfdbff5 100644
--- a/documentation/src/index.dox
+++ b/documentation/src/index.dox
@@ -8,7 +8,7 @@
     \image latex FL200.png "" width=5cm
   </CENTER></TD>
   <TD><CENTER>
-    <B>FLTK 1.4.2 Programming Manual</B>
+    <B>FLTK 1.5.0 Programming Manual</B>
 
     By F.&nbsp;Costantini, M.&nbsp;Melcher,
     A.&nbsp;Schlosser, B.&nbsp;Spitzak and M.&nbsp;Sweet.
diff --git a/documentation/src/preface.dox b/documentation/src/preface.dox
index 1f773c5f5d471f2bdc5d3cbe891ccda9519e3eb4..aca7289fd3211bae14fb15216e619029670322b0 100644
--- a/documentation/src/preface.dox
+++ b/documentation/src/preface.dox
@@ -2,7 +2,7 @@
 
  \page preface Preface
 
-This manual describes the Fast Light Tool Kit ("FLTK") version 1.4.2,
+This manual describes the Fast Light Tool Kit ("FLTK") version 1.5.0,
 a C++ Graphical User Interface ("GUI") toolkit for UNIX, Microsoft Windows,
 and Apple macOS.
 
diff --git a/examples/fluid-callback.fl b/examples/fluid-callback.fl
index dd97575f6eafb9c9ccf90afb2f6235f702ebb1c9..6e47591047ec3a6b883958e171e75087a4e4bcd5 100644
--- a/examples/fluid-callback.fl
+++ b/examples/fluid-callback.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 comment {README FIRST
diff --git a/fltk-options/fltk-options.plist b/fltk-options/fltk-options.plist
index b16fe0ba6ddf427ad34a282d373d4939df5441ca..a84ac790a90571d787b79d1072afd6b759ad2db2 100644
--- a/fltk-options/fltk-options.plist
+++ b/fltk-options/fltk-options.plist
@@ -9,7 +9,7 @@
 	<key>CFBundleIdentifier</key>
 	<string>org.fltk.fltk-options</string>
 	<key>CFBundleVersion</key>
-	<string>1.4.2</string>
+	<string>1.5.0</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>English</string>
 	<key>NSHumanReadableCopyright</key>
@@ -25,9 +25,9 @@
 	<key>CFBundleIconFile</key>
 	<string>fltk-options.icns</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.4.2</string>
+	<string>1.5.0</string>
 	<key>CFBundleGetInfoString</key>
-	<string>1.4.2, Copyright 2023-2025 by Bill Spitzak and others</string>
+	<string>1.5.0, Copyright 2023-2025 by Bill Spitzak and others</string>
 	<key>NSHighResolutionCapable</key>
 	<true/>
 </dict>
diff --git a/fltk_version.dat b/fltk_version.dat
index 9df886c42a1e2082f1471383d986fea4d531f8ac..bc80560fad66ca670bdfbd1e5c973a024d4d0325 100644
--- a/fltk_version.dat
+++ b/fltk_version.dat
@@ -1 +1 @@
-1.4.2
+1.5.0
diff --git a/fluid/about_panel.cxx b/fluid/about_panel.cxx
index 18885eee877357c03dc801b9f11069c6f09db5c0..b28347ae515a3e9ee2b58a3adee77ba21ee502da 100644
--- a/fluid/about_panel.cxx
+++ b/fluid/about_panel.cxx
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #include "about_panel.h"
 void show_help(const char *name);
diff --git a/fluid/about_panel.fl b/fluid/about_panel.fl
index 743aaa62665bcfc85bff28f893facab1f9851bac..6ef5bdbd08f5a89c32c39ea0216f5c1c4e11f616 100644
--- a/fluid/about_panel.fl
+++ b/fluid/about_panel.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 comment {//
diff --git a/fluid/about_panel.h b/fluid/about_panel.h
index e06c34de949ac40a7cf06de5324857f4793f4a8b..0130a1e4445b2b68bbeaa9c2dfc1032de74fcdff 100644
--- a/fluid/about_panel.h
+++ b/fluid/about_panel.h
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #ifndef about_panel_h
 #define about_panel_h
diff --git a/fluid/codeview_panel.cxx b/fluid/codeview_panel.cxx
index 2f72738c87514a05f42e29f7b845779c5c58a5ce..0c46696e375eadfb2335f09e37fe315758008858 100644
--- a/fluid/codeview_panel.cxx
+++ b/fluid/codeview_panel.cxx
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #include "codeview_panel.h"
 #include "fluid.h"
diff --git a/fluid/codeview_panel.fl b/fluid/codeview_panel.fl
index e0737c781dc1c79679b5424205caa83205cc3585..80f74f13feee8dc29138aa313880ab993bdae9e8 100644
--- a/fluid/codeview_panel.fl
+++ b/fluid/codeview_panel.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 comment {//
diff --git a/fluid/codeview_panel.h b/fluid/codeview_panel.h
index f98660b8f020eae543a40d02d4ee5b2d145d920d..34efd22afeff5e273f0e57b753d59382c2e49e1e 100644
--- a/fluid/codeview_panel.h
+++ b/fluid/codeview_panel.h
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #ifndef codeview_panel_h
 #define codeview_panel_h
diff --git a/fluid/documentation/src/index.dox b/fluid/documentation/src/index.dox
index 657e448e25dcdd637381461068359308c5f23b2b..7a2808207ba36f563ca0db2e372d9ed7c33d001d 100644
--- a/fluid/documentation/src/index.dox
+++ b/fluid/documentation/src/index.dox
@@ -14,7 +14,7 @@
      \image latex fluid-128.png  "" width=3cm
    </CENTER></TD>
    <TD><CENTER>
-     <B>FLUID 1.4.2 User Manual</B>
+     <B>FLUID 1.5.0 User Manual</B>
 
      By F.&nbsp;Costantini, M.&nbsp;Melcher,
      A.&nbsp;Schlosser, B.&nbsp;Spitzak and M.&nbsp;Sweet.
diff --git a/fluid/fluid.plist b/fluid/fluid.plist
index 88711f118f885546c6bc7661b96dbd56b2240ce4..cf1b391c855ba4d9e45ef06f4672b499c0f7f077 100644
--- a/fluid/fluid.plist
+++ b/fluid/fluid.plist
@@ -9,7 +9,7 @@
 	<key>CFBundleIdentifier</key>
 	<string>org.fltk.fluid</string>
 	<key>CFBundleVersion</key>
-	<string>1.4.2</string>
+	<string>1.5.0</string>
 	<key>CFBundleDevelopmentRegion</key>
 	<string>English</string>
 	<key>NSHumanReadableCopyright</key>
@@ -25,9 +25,9 @@
 	<key>CFBundleIconFile</key>
 	<string>fluid.icns</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.4.2</string>
+	<string>1.5.0</string>
 	<key>CFBundleGetInfoString</key>
-	<string>1.4.2, Copyright 1998-2025 by Bill Spitzak and others</string>
+	<string>1.5.0, Copyright 1998-2025 by Bill Spitzak and others</string>
 	<key>CFBundleDocumentTypes</key>
 	<array>
 		<dict>
diff --git a/fluid/function_panel.cxx b/fluid/function_panel.cxx
index 71a34b51052f10a44d5950e21c3b5a442d83f6c1..489341c5b41febadf1387a78e2df20a904eafd12 100644
--- a/fluid/function_panel.cxx
+++ b/fluid/function_panel.cxx
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #include "function_panel.h"
 #include "fluid.h"
diff --git a/fluid/function_panel.fl b/fluid/function_panel.fl
index bd25f382195fdf800b612246c0c5ed4f0f948f46..7c77af00963a525f0033a4341166059ae4a04f68 100644
--- a/fluid/function_panel.fl
+++ b/fluid/function_panel.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 snap {
diff --git a/fluid/function_panel.h b/fluid/function_panel.h
index a45c197f042ebc10767c70b2e94015df93cc8eb0..d41a9d355e7f200ed3bbc2abc0e2c8eb9ffd0992 100644
--- a/fluid/function_panel.h
+++ b/fluid/function_panel.h
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #ifndef function_panel_h
 #define function_panel_h
diff --git a/fluid/print_panel.cxx b/fluid/print_panel.cxx
index a6077888c21982fd16109035aa44d0e7bf572fe3..bf1dca655b93395c6e0563b32f524a7bdd06f289 100644
--- a/fluid/print_panel.cxx
+++ b/fluid/print_panel.cxx
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #include "print_panel.h"
 #include "fluid.h"
diff --git a/fluid/print_panel.fl b/fluid/print_panel.fl
index 94df4ce75ed673820f70ca7584b748de8a236451..382eece2b3e3fc4c09cb95dc80260742e1a23141 100644
--- a/fluid/print_panel.fl
+++ b/fluid/print_panel.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 comment {//
diff --git a/fluid/print_panel.h b/fluid/print_panel.h
index a8f5ccb9dcd3b938fd94d1f84dc8029d7790c244..fed8fd3c079f21da38f0b3ec0ddbd45e971f0b73 100644
--- a/fluid/print_panel.h
+++ b/fluid/print_panel.h
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #ifndef print_panel_h
 #define print_panel_h
diff --git a/fluid/settings_panel.cxx b/fluid/settings_panel.cxx
index 351598359c81726529fe8c2c99f81fac308cabc5..bdaea50ca7b2cb1673249f01c7650734d6e9ae8a 100644
--- a/fluid/settings_panel.cxx
+++ b/fluid/settings_panel.cxx
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #include "settings_panel.h"
 #include "undo.h"
diff --git a/fluid/settings_panel.fl b/fluid/settings_panel.fl
index b0ef7ebfaa594694c69eabd2a0d47a00ae7adffb..912f9bf68165b6375471012413eb86b7e1142b1b 100644
--- a/fluid/settings_panel.fl
+++ b/fluid/settings_panel.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 snap {
diff --git a/fluid/settings_panel.h b/fluid/settings_panel.h
index edd1529727828c29533b52063d19708cfa79d931..a582f69e6e182e1757866dc0c0dfc51815e47eff 100644
--- a/fluid/settings_panel.h
+++ b/fluid/settings_panel.h
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #ifndef settings_panel_h
 #define settings_panel_h
diff --git a/fluid/template_panel.cxx b/fluid/template_panel.cxx
index 4b97ddc7e8d15ec62abfd98c8e4122367b755dcd..7bc8943c0fd0d28635b8670f5ef7909088ad372a 100644
--- a/fluid/template_panel.cxx
+++ b/fluid/template_panel.cxx
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #include "template_panel.h"
 #include "fluid.h"
diff --git a/fluid/template_panel.fl b/fluid/template_panel.fl
index a90e5f2a077b3ee386599e96808b2ab525b86d4c..f4e4f8bb2888255d574e49e90e18414b8680b105 100644
--- a/fluid/template_panel.fl
+++ b/fluid/template_panel.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 comment {//
diff --git a/fluid/template_panel.h b/fluid/template_panel.h
index 548958e133e4ac493b6580ebb874df764e74c4dd..172e4c7de2d636e5be1c286e000e90d231e00cca 100644
--- a/fluid/template_panel.h
+++ b/fluid/template_panel.h
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #ifndef template_panel_h
 #define template_panel_h
diff --git a/fluid/widget_panel.cxx b/fluid/widget_panel.cxx
index 58eaa86107c34ff74235eee9e1f1e6c0e19bca27..ec61c1083053895de3434a703d6b12233731e9bd 100644
--- a/fluid/widget_panel.cxx
+++ b/fluid/widget_panel.cxx
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #include "widget_panel.h"
 #include "undo.h"
diff --git a/fluid/widget_panel.fl b/fluid/widget_panel.fl
index 17470c0e98e4c8800db17ff2ae1e9509ec385b90..470248e7deb833b10c6da1b3affd8b3490f8c0e2 100644
--- a/fluid/widget_panel.fl
+++ b/fluid/widget_panel.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 snap {
diff --git a/fluid/widget_panel.h b/fluid/widget_panel.h
index 357da03cde919a76c05a4d2f2ea7d688502fea24..38e70cc71589428a745054cb08facf610de33d1e 100644
--- a/fluid/widget_panel.h
+++ b/fluid/widget_panel.h
@@ -14,7 +14,7 @@
 //     https://www.fltk.org/bugs.php
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #ifndef widget_panel_h
 #define widget_panel_h
diff --git a/src/Fl_File_Chooser.cxx b/src/Fl_File_Chooser.cxx
index 0647a58b34101463c8146dccf65d389521508236..ea116319dfc8a866b1923de4aa11c58b5da488b6 100644
--- a/src/Fl_File_Chooser.cxx
+++ b/src/Fl_File_Chooser.cxx
@@ -21,7 +21,7 @@
 // =======================================================================
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #include "../FL/Fl_File_Chooser.H"
 #include <FL/fl_draw.H>
diff --git a/src/Fl_File_Chooser.fl b/src/Fl_File_Chooser.fl
index 0c2a448301ec8017cbf288b76e68d7f8511c720a..1328733c9c54fc4de9bedad63ffe1e5108e304fb 100644
--- a/src/Fl_File_Chooser.fl
+++ b/src/Fl_File_Chooser.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {../FL/Fl_File_Chooser.H}
 code_name {.cxx}
 comment {//
diff --git a/src/Fl_Help_Dialog.cxx b/src/Fl_Help_Dialog.cxx
index 38e8946e36aedd4223a69ab233e61eeb0674f027..c2e82afcd57ffad6b6ae3c9a7c4efa63859fd6bb 100644
--- a/src/Fl_Help_Dialog.cxx
+++ b/src/Fl_Help_Dialog.cxx
@@ -21,7 +21,7 @@
 // ========================================================================
 //
 
-// generated by Fast Light User Interface Designer (fluid) version 1.0402
+// generated by Fast Light User Interface Designer (fluid) version 1.0500
 
 #include "../FL/Fl_Help_Dialog.H"
 #include <FL/Fl_Shared_Image.H>
diff --git a/src/Fl_Help_Dialog.fl b/src/Fl_Help_Dialog.fl
index 6dbdb9c8252a97f449c8845f5ba7559b3e7301b7..e147f37f6250562d22358395a88927b88bfd43e0 100644
--- a/src/Fl_Help_Dialog.fl
+++ b/src/Fl_Help_Dialog.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {../FL/Fl_Help_Dialog.H}
 code_name {.cxx}
 comment {//
diff --git a/test/CubeViewUI.fl b/test/CubeViewUI.fl
index 438597eaddf5b5de9804783464c6ac7536a3cd3c..8ddd915d52b736de4989c7f3e606a667534e6614 100644
--- a/test/CubeViewUI.fl
+++ b/test/CubeViewUI.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 class CubeViewUI {open
diff --git a/test/checkers_pieces.fl b/test/checkers_pieces.fl
index 6658fb0770f22f0676ad946b4f990fe3cd07d39b..d4c51caafaea4b5ea53ce40b38dfdde3bd460100 100644
--- a/test/checkers_pieces.fl
+++ b/test/checkers_pieces.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 comment {//
diff --git a/test/fast_slow.fl b/test/fast_slow.fl
index 97de781277842dfcebc4349bda7cae3d48ed41d1..471965c4030c91115a3d9dc44705af8d06a56a35 100644
--- a/test/fast_slow.fl
+++ b/test/fast_slow.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 Function {} {open
diff --git a/test/inactive.fl b/test/inactive.fl
index 3c8179cb5464bcd376ff564c8e56d23d0b9a537b..663deaeed3297f5cf8c39d62b00b78b0be1bdc06 100644
--- a/test/inactive.fl
+++ b/test/inactive.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 Function {} {open
diff --git a/test/keyboard_ui.fl b/test/keyboard_ui.fl
index 4a1de435b8dc587e83b0c6562803f159c87efeeb..5def7a4c6f86527566be96717c0471be4e2f9820 100644
--- a/test/keyboard_ui.fl
+++ b/test/keyboard_ui.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 Function {make_window()} {open
diff --git a/test/mandelbrot_ui.fl b/test/mandelbrot_ui.fl
index 396e0a3cafa8694d6cedaf02cf10474e2d148324..924bf9acd3b597a6aa838caa60d591292c711e79 100644
--- a/test/mandelbrot_ui.fl
+++ b/test/mandelbrot_ui.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 decl {\#include "mandelbrot.h"} {public local
diff --git a/test/preferences.fl b/test/preferences.fl
index d1702345e12e110aae644db1b3bbaac281e67654..ea3633db1ac5bc0843f7e93881d5e2f2c190e791 100644
--- a/test/preferences.fl
+++ b/test/preferences.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 i18n_type 1
 i18n_include {<stdio.h>}
 i18n_conditional {}
diff --git a/test/radio.fl b/test/radio.fl
index c5dbc31c01ecb555b6b22f1c38108f8d00c10927..40497402caec65e0b3778f30e485067a53037c23 100644
--- a/test/radio.fl
+++ b/test/radio.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 Function {button_cb(Fl_Button *b, void *)} {
diff --git a/test/resize.fl b/test/resize.fl
index 2043d4335417d2b2b6e3eeef653a9defda985b4e..d3173e66e06c925896a00d3b80d85d1859e3b184 100644
--- a/test/resize.fl
+++ b/test/resize.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 Function {} {open
diff --git a/test/tabs.fl b/test/tabs.fl
index 037c77461e3c65d93129f1accf17523604a3b6f9..fa329174570162e32324f99a977ee72c6aab9a01 100644
--- a/test/tabs.fl
+++ b/test/tabs.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 Function {} {open
diff --git a/test/terminal.fl b/test/terminal.fl
index 777f403147720a0c4c8e8efc6a796ffae9e0d5e7..b2c0d4d1f7d13a269926487f7e3553d8d0c4d292 100644
--- a/test/terminal.fl
+++ b/test/terminal.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 utf8_in_src
 header_name {.h}
 code_name {.cxx}
diff --git a/test/tree.fl b/test/tree.fl
index 2400c857984343da5ef13b0a2b8c167c3e82af54..e8ab00c5ef109be6e17d8a3feb9bb7f15671b94d 100644
--- a/test/tree.fl
+++ b/test/tree.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 decl {\#include <stdio.h>} {public global
diff --git a/test/valuators.fl b/test/valuators.fl
index 6fcb59105a4da32a35825563ee6720d4823949fc..8dca16ba35d309a20307bcb04146f85890f796f5 100644
--- a/test/valuators.fl
+++ b/test/valuators.fl
@@ -1,5 +1,5 @@
 # data file for the Fltk User Interface Designer (fluid)
-version 1.0401
+version 1.0500
 header_name {.h}
 code_name {.cxx}
 Function {} {open