4 files changed, 98 insertions, 10 deletions

diff --git a/src/c_fl_window.cpp b/src/c_fl_window.cpp
index fbce39b..eda235a 100644
--- a/src/c_fl_window.cpp
+++ b/src/c_fl_window.cpp
@@ -5,54 +5,98 @@
 #include "c_fl_window.h"
 
 
+
+
+typedef void (hook)(void*);
+typedef hook* hook_p;
+
+
+
+
+class My_Window : public Fl_Window {
+    public:
+        using Fl_Window::Fl_Window;
+        friend void window_set_draw_hook(WINDOW n, void * d);
+        friend void fl_window_draw(WINDOW n);
+    protected:
+        void draw();
+        void real_draw();
+        hook_p draw_hook;
+};
+
+
+void My_Window::draw() {
+    (*draw_hook)(this->user_data());
+}
+
+
+void My_Window::real_draw() {
+    Fl_Window::draw();
+}
+
+
+void window_set_draw_hook(WINDOW n, void * d) {
+    reinterpret_cast<My_Window*>(n)->draw_hook = reinterpret_cast<hook_p>(d);
+}
+
+
+void fl_window_draw(WINDOW n) {
+    reinterpret_cast<My_Window*>(n)->real_draw();
+}
+
+
+
+
 WINDOW new_fl_window(int x, int y, int w, int h, char* label) {
-    Fl_Window *n = new Fl_Window(x, y, w, h, label);
+    My_Window *n = new My_Window(x, y, w, h, label);
     return n;
 }
 
 
 WINDOW new_fl_window2(int w, int h) {
-    Fl_Window *n = new Fl_Window(w, h);
+    My_Window *n = new My_Window(w, h);
     return n;
 }
 
 
 void free_fl_window(WINDOW n) {
-    delete reinterpret_cast<Fl_Window*>(n);
+    delete reinterpret_cast<My_Window*>(n);
 }
 
 
+
+
 void fl_window_show(WINDOW n) {
-    reinterpret_cast<Fl_Window*>(n)->show();
+    reinterpret_cast<My_Window*>(n)->show();
 }
 
 
 void fl_window_hide(WINDOW n) {
-    reinterpret_cast<Fl_Window*>(n)->hide();
+    reinterpret_cast<My_Window*>(n)->hide();
 }
 
 
 void fl_window_set_label(WINDOW n, char* text) {
-    reinterpret_cast<Fl_Window*>(n)->copy_label(text);
+    reinterpret_cast<My_Window*>(n)->copy_label(text);
 }
 
 
 void fl_window_size_range(WINDOW n, int lw, int lh, int hw, int hh, int dw, int dh, int a) {
-    reinterpret_cast<Fl_Window*>(n)->size_range(lw, lh, hw, hh, dw, dh, a);
+    reinterpret_cast<My_Window*>(n)->size_range(lw, lh, hw, hh, dw, dh, a);
 }
 
 
 void fl_window_set_icon(WINDOW n, void * img) {
-    reinterpret_cast<Fl_Window*>(n)->icon(reinterpret_cast<Fl_RGB_Image*>(img));
+    reinterpret_cast<My_Window*>(n)->icon(reinterpret_cast<Fl_RGB_Image*>(img));
 }
 
 
 void fl_window_set_modal(WINDOW n) {
-    reinterpret_cast<Fl_Window*>(n)->set_modal();
+    reinterpret_cast<My_Window*>(n)->set_modal();
 }
 
 
 void fl_window_set_non_modal(WINDOW n) {
-    reinterpret_cast<Fl_Window*>(n)->set_non_modal();
+    reinterpret_cast<My_Window*>(n)->set_non_modal();
 }
 
diff --git a/src/c_fl_window.h b/src/c_fl_window.h
index c382919..39bd0ac 100644
--- a/src/c_fl_window.h
+++ b/src/c_fl_window.h
@@ -7,6 +7,9 @@
 typedef void* WINDOW;
 
 
+extern "C" void window_set_draw_hook(WINDOW n, void * d);
+extern "C" void fl_window_draw(WINDOW n);
+
 extern "C" WINDOW new_fl_window(int x, int y, int w, int h, char* label);
 extern "C" WINDOW new_fl_window2(int w, int h);
 extern "C" void free_fl_window(WINDOW n);
diff --git a/src/fltk-widgets-groups-windows.adb b/src/fltk-widgets-groups-windows.adb
index 2d93bdd..f217403 100644
--- a/src/fltk-widgets-groups-windows.adb
+++ b/src/fltk-widgets-groups-windows.adb
@@ -9,6 +9,14 @@ use type System.Address;
 package body FLTK.Widgets.Groups.Windows is
 
 
+    procedure window_set_draw_hook
+           (W, D : in System.Address);
+    pragma Import (C, window_set_draw_hook, "window_set_draw_hook");
+
+    procedure fl_window_draw
+           (W : in System.Address);
+    pragma Import (C, fl_window_draw, "fl_window_draw");
+
     function new_fl_window
            (X, Y, W, H : in Interfaces.C.int;
             Text       : in Interfaces.C.char_array)
@@ -57,6 +65,30 @@ package body FLTK.Widgets.Groups.Windows is
 
 
 
+    procedure Draw_Hook (U : in System.Address);
+    pragma Convention (C, Draw_Hook);
+
+    procedure Draw_Hook
+           (U : in System.Address)
+    is
+        Ada_Window : access Window'Class :=
+            Window_Convert.To_Pointer (U);
+    begin
+        Ada_Window.Draw;
+    end Draw_Hook;
+
+
+
+
+    procedure Draw
+           (This : in out Window) is
+    begin
+        fl_window_draw (This.Void_Ptr);
+    end Draw;
+
+
+
+
     procedure Finalize
            (This : in out Window) is
     begin
@@ -87,6 +119,7 @@ package body FLTK.Widgets.Groups.Windows is
             fl_widget_set_user_data
                    (This.Void_Ptr,
                     Widget_Convert.To_Address (This'Unchecked_Access));
+            window_set_draw_hook (This.Void_Ptr, Draw_Hook'Address);
         end return;
     end Create;
 
@@ -105,6 +138,7 @@ package body FLTK.Widgets.Groups.Windows is
             fl_widget_set_user_data
                    (This.Void_Ptr,
                     Widget_Convert.To_Address (This'Unchecked_Access));
+            window_set_draw_hook (This.Void_Ptr, Draw_Hook'Address);
         end return;
     end Create;
 
diff --git a/src/fltk-widgets-groups-windows.ads b/src/fltk-widgets-groups-windows.ads
index 96047ee..294450a 100644
--- a/src/fltk-widgets-groups-windows.ads
+++ b/src/fltk-widgets-groups-windows.ads
@@ -56,6 +56,10 @@ package FLTK.Widgets.Groups.Windows is
 private
 
 
+    procedure Draw
+           (This : in out Window);
+
+
     type Window is new Group with null record;
 
 
@@ -63,5 +67,8 @@ private
            (This : in out Window);
 
 
+    package Window_Convert is new System.Address_To_Access_Conversions (Window'Class);
+
+
 end FLTK.Widgets.Groups.Windows;