From 82f42a4103c168abd3605acad8ee4b9b4f00d79d Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sun, 23 Sep 2018 21:00:46 +0800
Subject: Add native message handler event in Window.

---
 CruUI/ui/events/ui_event.h | 42 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 42 insertions(+)

(limited to 'CruUI/ui/events')

diff --git a/CruUI/ui/events/ui_event.h b/CruUI/ui/events/ui_event.h
index 4915d63d..a17067c7 100644
--- a/CruUI/ui/events/ui_event.h
+++ b/CruUI/ui/events/ui_event.h
@@ -215,6 +215,47 @@ namespace cru
                 bool new_state_;
             };
 
+            struct WindowNativeMessage
+            {
+                HWND hwnd;
+                int msg;
+                WPARAM w_param;
+                LPARAM l_param;
+            };
+
+            class WindowNativeMessageEventArgs : public UiEventArgs
+            {
+            public:
+                WindowNativeMessageEventArgs(Object* sender, Object* original_sender, const WindowNativeMessage& message)
+                    : UiEventArgs(sender, original_sender), message_(message), result_(std::nullopt)
+                {
+
+                }
+                WindowNativeMessageEventArgs(const WindowNativeMessageEventArgs& other) = default;
+                WindowNativeMessageEventArgs(WindowNativeMessageEventArgs&& other) = default;
+                WindowNativeMessageEventArgs& operator=(const WindowNativeMessageEventArgs& other) = default;
+                WindowNativeMessageEventArgs& operator=(WindowNativeMessageEventArgs&& other) = default;
+                ~WindowNativeMessageEventArgs() override = default;
+
+                WindowNativeMessage GetWindowMessage() const
+                {
+                    return message_;
+                }
+
+                std::optional<LRESULT> GetResult() const
+                {
+                    return result_;
+                }
+
+                void SetResult(const std::optional<LRESULT> result)
+                {
+                    result_ = result;
+                }
+
+            private:
+                WindowNativeMessage message_;
+                std::optional<LRESULT> result_;
+            };
 
             using UiEvent = Event<UiEventArgs>;
             using MouseEvent = Event<MouseEventArgs>;
@@ -224,6 +265,7 @@ namespace cru
             using SizeChangedEvent = Event<SizeChangedEventArgs>;
             using FocusChangeEvent = Event<FocusChangeEventArgs>;
             using ToggleEvent = Event<ToggleEventArgs>;
+            using WindowNativeMessageEvent = Event<WindowNativeMessageEventArgs>;
         }
     }
 }
\ No newline at end of file
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