Use the typed enum CefEventFlags for modifiers in keyboard events.

Author: jankurianski

CefSharp.Core/Internals/ClientAdapter.cpp

@@ -140,7 +140,7 @@ namespace CefSharp
 
             // TODO: windows_key_code could possibly be the wrong choice here (the OnKeyEvent signature has changed since CEF1). The
             // other option would be native_key_code.
-            return handler->OnKeyEvent(_browserControl, KeyTypeToManaged(event.type), event.windows_key_code, event.modifiers, event.is_system_key == 1);
+            return handler->OnKeyEvent(_browserControl, KeyTypeToManaged(event.type), event.windows_key_code, (CefEventFlags)event.modifiers, event.is_system_key == 1);
         }
 
         bool ClientAdapter::OnPreKeyEvent(CefRefPtr<CefBrowser> browser, const CefKeyEvent& event, CefEventHandle os_event, bool* is_keyboard_shortcut)
@@ -152,7 +152,7 @@ namespace CefSharp
                 return false;
             }
 
-            return handler->OnPreKeyEvent(_browserControl, (KeyType)event.type, event.windows_key_code, event.native_key_code, event.modifiers, event.is_system_key == 1, *is_keyboard_shortcut);
+            return handler->OnPreKeyEvent(_browserControl, (KeyType)event.type, event.windows_key_code, event.native_key_code, (CefEventFlags)event.modifiers, event.is_system_key == 1, *is_keyboard_shortcut);
         }
 
         void ClientAdapter::OnLoadStart(CefRefPtr<CefBrowser> browser, CefRefPtr<CefFrame> frame)

CefSharp/IKeyboardHandler.cs

@@ -6,7 +6,7 @@ namespace CefSharp
 {
     public interface IKeyboardHandler
     {
-        bool OnKeyEvent(IWebBrowser browser, KeyType type, int code, int modifiers, bool isSystemKey);
-        bool OnPreKeyEvent(IWebBrowser browser, KeyType type, int windowsKeyCode, int nativeKeyCode, int modifiers, bool isSystemKey, bool isKeyboardShortcut);
+        bool OnKeyEvent(IWebBrowser browser, KeyType type, int code, CefEventFlags modifiers, bool isSystemKey);
+        bool OnPreKeyEvent(IWebBrowser browser, KeyType type, int windowsKeyCode, int nativeKeyCode, CefEventFlags modifiers, bool isSystemKey, bool isKeyboardShortcut);
     }
 }