This function draws a rectangle using the specified color and flags and exits with COLOR=Color.
int x Horizontal location of upper left corner of rectangle.
int y Vertical location of upper left corner of rectangle.
int w Width of rectangle.
int h Height of rectangle.
UINT Color Color to be used as identified by Flags setting.
\UINT Flags 0 = Outline only
1 = Solidfill interior
2 = Patternfill interior with "gray" pattern