Prepare UI support

src/common/platform/platform.hpp

@@ -25,6 +25,7 @@
 #include "registry.hpp"
 #include "network.hpp"
 #include "threading.hpp"
+#include "window.hpp"
 
 #if defined(__GNUC__) || defined(__clang__)
 #pragma GCC diagnostic pop

src/common/platform/window.hpp

@@ -0,0 +1,40 @@
+#pragma once
+
+using pointer = uint64_t;
+
+#ifndef OS_WINDOWS
+typedef struct tagPOINT
+{
+    LONG x;
+    LONG y;
+} POINT, *PPOINT, NEAR *NPPOINT, FAR *LPPOINT;
+#endif
+
+using wparam = pointer;
+using lparam = pointer;
+using lresult = pointer;
+
+typedef struct _LARGE_STRING
+{
+    ULONG Length;
+    ULONG MaximumLength : 31;
+    ULONG bAnsi : 1;
+    pointer Buffer;
+} LARGE_STRING;
+
+using hwnd = pointer;
+using hmenu = pointer;
+using hinstance = pointer;
+
+struct msg
+{
+    hwnd hwnd;
+    UINT message;
+    wparam wParam;
+    lparam lParam;
+    DWORD time;
+    POINT pt;
+#ifdef _MAC
+    DWORD lPrivate;
+#endif
+};