Add definition of XColor.

src/macgui.h

@@ -37,6 +37,16 @@ typedef struct OpaqueWindowPtr* Window;
 typedef WindowPtr Window;
 #endif
 
+/* A definition of XColor for non-X frames.  */
+#ifndef HAVE_X_WINDOWS
+typedef struct {
+  unsigned long pixel;
+  unsigned short red, green, blue;
+  char flags;
+  char pad;
+} XColor;
+#endif
+
 #define FACE_DEFAULT (~0)
 
 

src/w32gui.h

@@ -86,6 +86,16 @@ typedef struct _XImage
   /* Optional RGBQUAD array for palette follows (see BITMAPINFO docs).  */
 } XImage;
 
+/* A definition of XColor for non-X frames.  */
+#ifndef HAVE_X_WINDOWS
+typedef struct {
+  unsigned long pixel;
+  unsigned short red, green, blue;
+  char flags;
+  char pad;
+} XColor;
+#endif
+
 #define FACE_DEFAULT (~0)
 
 extern HINSTANCE hinst;