/* predeclare some structures */
typedef struct _DDHALINFO *LPDDHALINFO;
typedef struct _DDRAWI_DIRECTDRAW_INT *LPDDRAWI_DIRECTDRAW_INT;
+
+#ifndef DDRAWI_DIRECTDRAW_DEFINED
typedef struct _DDRAWI_DIRECTDRAW_LCL *LPDDRAWI_DIRECTDRAW_LCL;
typedef struct _DDRAWI_DIRECTDRAW_GBL *LPDDRAWI_DIRECTDRAW_GBL;
+#define DDRAWI_DIRECTDRAW_DEFINED
+#endif
+
typedef struct _DDRAWI_DDRAWSURFACE_INT *LPDDRAWI_DDRAWSURFACE_INT;
+
+#ifndef DDRAWI_DDRAWSURFACE_DEFINED
typedef struct _DDRAWI_DDRAWSURFACE_LCL *LPDDRAWI_DDRAWSURFACE_LCL;
+#define DDRAWI_DDRAWSURFACE_DEFINED
+#endif
+
typedef struct _DDRAWI_DDRAWSURFACE_GBL *LPDDRAWI_DDRAWSURFACE_GBL;
typedef struct _DDRAWI_DDRAWSURFACE_MORE *LPDDRAWI_DDRAWSURFACE_MORE;
typedef struct _DDRAWI_DDRAWSURFACE_GBL_MORE *LPDDRAWI_DDRAWSURFACE_GBL_MORE;