5 files changed, 23 insertions, 40 deletions
diff --git a/include/cru/platform/native/basic_types.hpp b/include/cru/platform/native/base.hpp
index 84cc61d1..d62dc56b 100644
--- a/include/cru/platform/native/basic_types.hpp
+++ b/include/cru/platform/native/base.hpp
@@ -1,8 +1,15 @@
 #pragma once
 #include "cru/common/base.hpp"
 #include "cru/common/bitmask.hpp"
+#include "cru/platform/graph/base.hpp"
 
 namespace cru::platform::native {
+struct ICursor;
+struct ICursorManager;
+struct IUiApplication;
+struct INativeWindow;
+struct INativeWindowResolver;
+
 struct Dpi {
   float x;
   float y;
@@ -20,4 +27,17 @@ constexpr MouseButton middle{0b10};
 constexpr MouseButton right{0b100};
 }  // namespace mouse_buttons
 
+enum class SystemCursorType {
+  Arrow,
+  Hand,
+};
+
+struct NativeMouseButtonEventArgs {
+  MouseButton button;
+  Point point;
+};
+
+enum class FocusChangeType { Gain, Lost };
+
+enum class MouseEnterLeaveType { Enter, Leave };
 }  // namespace cru::platform::native
diff --git a/include/cru/platform/native/cursor.hpp b/include/cru/platform/native/cursor.hpp
index cb8b7ed2..eae51ffe 100644
--- a/include/cru/platform/native/cursor.hpp
+++ b/include/cru/platform/native/cursor.hpp
@@ -1,17 +1,12 @@
 #pragma once
-
 #include "../resource.hpp"
+#include "base.hpp"
 
 #include <memory>
 
 namespace cru::platform::native {
 struct ICursor : virtual INativeResource {};
 
-enum class SystemCursorType {
-  Arrow,
-  Hand,
-};
-
 struct ICursorManager : virtual INativeResource {
   virtual std::shared_ptr<ICursor> GetSystemCursor(SystemCursorType type) = 0;
 
diff --git a/include/cru/platform/native/event.hpp b/include/cru/platform/native/event.hpp
deleted file mode 100644
index 48e9cfca..00000000
--- a/include/cru/platform/native/event.hpp
+++ /dev/null
@@ -1,15 +0,0 @@
-#pragma once
-
-#include "../graph_base.hpp"
-#include "basic_types.hpp"
-
-namespace cru::platform::native {
-struct NativeMouseButtonEventArgs {
-  MouseButton button;
-  Point point;
-};
-
-enum class FocusChangeType { Gain, Lost };
-
-enum class MouseEnterLeaveType { Enter, Leave };
-}  // namespace cru::platform::native
diff --git a/include/cru/platform/native/ui_application.hpp b/include/cru/platform/native/ui_application.hpp
index e02904bb..0825251e 100644
--- a/include/cru/platform/native/ui_application.hpp
+++ b/include/cru/platform/native/ui_application.hpp
@@ -1,20 +1,13 @@
 #pragma once
 #include "../resource.hpp"
+#include "base.hpp"
 
 #include <chrono>
 #include <functional>
 #include <memory>
 #include <vector>
 
-namespace cru::platform::graph {
-struct IGraphFactory;
-}
-
 namespace cru::platform::native {
-struct INativeWindow;
-struct INativeWindowResolver;
-struct ICursorManager;
-
 // The entry point of a ui application.
 struct IUiApplication : public virtual INativeResource {
  public:
diff --git a/include/cru/platform/native/window.hpp b/include/cru/platform/native/window.hpp
index 9f2e2e71..85f809e5 100644
--- a/include/cru/platform/native/window.hpp
+++ b/include/cru/platform/native/window.hpp
@@ -1,19 +1,9 @@
 #pragma once
 #include "../resource.hpp"
-
-#include "../graph_base.hpp"
-#include "basic_types.hpp"
+#include "base.hpp"
 #include "cru/common/event.hpp"
-#include "cursor.hpp"
-#include "event.hpp"
-
-namespace cru::platform::graph {
-struct IPainter;
-}
 
 namespace cru::platform::native {
-struct INativeWindowResolver;
-
 // Represents a native window, which exposes some low-level events and
 // operations.
 //