On Wednesday, 19 June 2019 at 14:58:44 UTC, drug wrote:
19.06.2019 17:52, Den_d_y пишет:
void load (const (char *) path)
     SDL_Surface ab = SDL_LoadBMP (path);
     a = SDL_CreateTextureFromSurface (ab);
     SDL_FreeSurface (ab);

try the following:
void load (string path)
    import std.string : toStringz;
SDL_Surface ab = SDL_LoadBMP (path.toStringz); // toStringz converts string to null terminated char*
    auto a = SDL_CreateTextureFromSurface (ab);
    SDL_FreeSurface (ab);

Also, the return type of SDL_LoadBMP is a pointer, SDL_Surface* not just SDL_Surface.

Indeed, in your code do use the D string path, not char*, and use toStringz when passing to C APIs.

Also, in D const(char)* would not be the same as const(char*). But don't worry about this and use string.

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