WPF Fix lParam.ToInt32() overflow when running in 64bit mode

#509 (comment)

Author: amaitland

CefSharp.Core/ManagedCefBrowserAdapter.h

@@ -175,7 +175,7 @@ namespace CefSharp
             }
         }
 
-        bool SendKeyEvent(int message, int wParam, int lParam)
+        bool SendKeyEvent(int message, int wParam, LPARAM lParam)
         {
             auto browser = _clientAdapter->GetCefBrowser();
 

CefSharp.Wpf/ChromiumWebBrowser.cs

@@ -625,7 +625,7 @@ private IntPtr SourceHook(IntPtr hWnd, int message, IntPtr wParam, IntPtr lParam
                         return IntPtr.Zero;
                     }
 
-                    handled = managedCefBrowserAdapter.SendKeyEvent(message, wParam.ToInt32(), lParam.ToInt32());
+                    handled = managedCefBrowserAdapter.SendKeyEvent(message, wParam.ToInt32(), lParam.ToInt64());
 
                     break;
                 }
@@ -898,7 +898,7 @@ private void OnPreviewKey(KeyEventArgs e)
                 var message = (int)(e.IsDown ? WM.KEYDOWN : WM.KEYUP);
                 var virtualKey = KeyInterop.VirtualKeyFromKey(e.Key);
 
-                e.Handled = managedCefBrowserAdapter.SendKeyEvent(message, virtualKey, (int)modifiers);
+                e.Handled = managedCefBrowserAdapter.SendKeyEvent(message, virtualKey, (Int64)modifiers);
             }
         }