CGContextSetFillColorWithColor

CGContextSetFillColorWithColor is a function in the Core Graphics framework of Apple's operating systems, used for setting the color that will be used for filling shapes. It takes two arguments: a graphics context and a color object. The graphics context is a reference to the drawing environment, such as a window or an image buffer. The color object, of type CGColor, specifies the color to be used.

When this function is called, the specified color becomes the active fill color for the graphics context. Subsequent drawing operations that involve filling a path, such as using functions like CGContextFillRect or CGContextFillEllipse, will use this color. This allows developers to control the appearance of filled shapes in their applications. The color object can be created using various color spaces, such as RGB or Grayscale, and can include alpha transparency. It is important to ensure that the CGColor object passed to the function is valid and has been properly initialized. After setting the fill color, it remains the active color until it is changed again by another call to CGContextSetFillColorWithColor or another color-setting function. This function is fundamental for basic shape rendering and custom drawing within the Core Graphics environment.