SDL Wiki
(This is the legacy documentation for stable SDL2, the current stable version; SDL3 is the current development version.)


Draw a line on the current rendering target.


int SDL_RenderDrawLine(SDL_Renderer * renderer,
                       int x1, int y1, int x2, int y2);

Function Parameters

renderer the rendering context
x1 the x coordinate of the start point
y1 the y coordinate of the start point
x2 the x coordinate of the end point
y2 the y coordinate of the end point

Return Value

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


SDL_RenderDrawLine() draws the line to include both end points. If you want to draw multiple, connecting lines use SDL_RenderDrawLines() instead.


This function is available since SDL 2.0.0.


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