SDL_SetRenderDrawColor

Set the color used for drawing operations (Rect, Line and Clear).

Header File

int SDL_SetRenderDrawColor(SDL_Renderer * renderer,
                   Uint8 r, Uint8 g, Uint8 b,
                   Uint8 a);

SDL_Renderer *	renderer	the rendering context.
Uint8	r	the red value used to draw on the rendering target.
Uint8	g	the green value used to draw on the rendering target.
Uint8	b	the blue value used to draw on the rendering target.
Uint8	a	the alpha value used to draw on the rendering target; usually `SDL_ALPHA_OPAQUE` (255). Use SDL_SetRenderDrawBlendMode to specify how the alpha channel is used.

(int) Returns 0 on success or a negative error code on failure; call SDL_GetError() for more information.

Set the color for drawing or filling rectangles, lines, and points, and for SDL_RenderClear().

This function is available since SDL 2.0.0.