Windows build ready. Program icon, however, exceeds string length on MSVC.

handmade.h

@@ -103,14 +103,10 @@ typedef struct game_memory {
     B32 IsInitialized;
 
     U64 PermanentStorageSize;
-    void *PermanentStorage; /* WARNING: This memory is REQUIRED to be zero
-                                         initialized!!! (Done by the OS
-                                         layer.) */
+    void *PermanentStorage; /* WARNING: This memory is REQUIRED to be zero initialized!!! (Done by the OS layer.) */
 
     U64 TransientStorageSize;
-    void *TransientStorage; /* WARNING: This memory is REQUIRED to be zero
-                                         initialized!!! (Done by the OS
-                                         layer.) */
+    void *TransientStorage; /* WARNING: This memory is REQUIRED to be zero initialized!!! (Done by the OS layer.) */
 
 #if BUILD_INTERNAL
     debug_read_file_result (*DEBUGPlatformReadEntireFile)(thread_context *Thread,const char *);
@@ -124,6 +120,9 @@ typedef struct game_memory {
     F32 SecondsElapsed;
 } game_clocks;*/
 
+#if OS_WINDOWS
+__declspec(dllexport)
+#endif
 void UpdateAndRender(thread_context *Thread, game_memory *Memory,
                      game_input *Input, game_offscreen_buffer *Buffer,
                      game_sound_output_buffer *SoundBuffer);