###### (This is the legacy documentation for stable SDL2, the current stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current development version.) # SDL_AllocPalette Create a palette structure with the specified number of color entries. ## Header File Defined in [SDL_pixels.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_pixels.h), but apps should _only_ `#include "SDL.h"`! ## Syntax ```c SDL_Palette* SDL_AllocPalette(int ncolors); ``` ## Function Parameters | | | | --------------- | ----------------------------------------------------------- | | **ncolors** | represents the number of color entries in the color palette | ## Return Value Returns a new [SDL_Palette](SDL_Palette) structure on success or NULL on failure (e.g. if there wasn't enough memory); call [SDL_GetError](SDL_GetError)() for more information. ## Remarks The palette entries are initialized to white. ## Version This function is available since SDL 2.0.0. ## See Also * [SDL_FreePalette](SDL_FreePalette) ## Example ```c SDL_Palette* palette = NULL; /* ... */ SDL_Init(SDL_INIT_VIDEO); // Create window and renderer SDL_Window *window; SDL_Renderer *renderer; SDL_CreateWindowAndRenderer(640, 480, 0, &window, &renderer); // Create new palette with 4 colors palette = SDL_AllocPalette(4); if (palette == NULL) printf( "Error: %s\n", SDL_GetError() ); /* ... */ // Set green and blue of the first color in the palette to 0 palette->colors[0].g = 0; palette->colors[0].b = 0; // Set render draw color to red SDL_SetRenderDrawColor(renderer, palette->colors[0].r, palette->colors[0].g, palette->colors[0].b, palette->colors[0].a); /* ... */ SDL_FreePalette(palette); palette = NULL; ``` ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction)