cairo-pattern-create-rgba (red green blue alpha)

red -- a double float red component of the color
green -- a double float green component of the color
blue -- a double float blue component of the color
alpha -- a double float alpha component of the color

The newly created cairo-pattern-t instance if successful, or an error pattern in case of no memory. The caller owns the returned object and should call the function cairo-pattern-destroy when finished with it. This function will always return a valid pointer, but if an error occurred the pattern status will be set to an error. To inspect the status of a pattern use the function cairo-patern-status.

Creates a new cairo-pattern-t instance corresponding to a translucent color. The color components are floating point numbers in the range 0 to 1. If the values passed in are outside that range, they will be clamped.