extern CGStyleRef CGStyleCreateShadow(const CGShadowStyle *shadow);
extern CGSValueObj CGSCreateCString(const char *string);
extern CGSValueObj CGSCreateBoolean(CGSBoolean boolean);
-extern CGError CGSSetWindowProperty(const CGSConnectionID cid,
- CGSWindowID wid, const CGSValueObj key, const CGSValueObj value);
+extern CGError CGSSetWindowProperty(const CGSConnectionID cid, CGSWindowID wid, const CGSValueObj key, const CGSValueObj value);
+
+extern CGAffineTransform CGAffineTransformMakeRotation(float angle);
+extern CGAffineTransform CGAffineTransformMakeScale(float sx, float sy);
+extern CGAffineTransform CGAffineTransformTranslate(CGAffineTransform t, float tx, float ty);
+extern CGError CGSSetWindowWarp(const CGSConnectionID cid, CGSWindowID wid, int w,int h, float *mesh);
+extern CGError CGSSetWindowTransform(const CGSConnectionID cid, CGSWindowID wid, CGAffineTransform transform);