• Den_d_y (17/17) Jun 19 2019 Hello, users of this programming language! I have a question. I
• drug (12/18) Jun 19 2019 try the following:
• XavierAP (7/24) Jun 19 2019 Also, the return type of SDL_LoadBMP is a pointer, SDL_Surface*
• XavierAP (6/8) Jun 19 2019 Or just use auto of course if you prefer:

Den_d_y <tod.naz ya.ru> writes:

Hello, users of this programming language! I have a question. I 
use in my application Derelict SDL 2 version 2.1.4.
And when I try to specify the path to the image:

void load (const (char *) path)
{
     SDL_Surface ab = SDL_LoadBMP (path);
     a = SDL_CreateTextureFromSurface (ab);
     SDL_FreeSurface (ab);
}

An error occurs:
"function derelict.sdl2.functions.SDL_LoadBMP (const (char) * 
file) is not callable using argument types (string)".
Well, okay, I use in arguments: const (char *) path. Annoyed, the 
program still writes this error. Please help with this problem.
  P.S. If you see errors in spelling and stuff, then note: I am a 
Russian user.
   P.P.S. I am not familiar with this programming language.

drug <drug2004 bk.ru> writes:

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);
}
```

XavierAP <n3minis-git yahoo.es> writes:

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.

XavierAP <n3minis-git yahoo.es> writes:

On Wednesday, 19 June 2019 at 17:28:38 UTC, XavierAP wrote:
 Also, the return type of SDL_LoadBMP is a pointer, SDL_Surface* 
 not just SDL_Surface.

Or just use auto of course if you prefer:

void load (string path)
{
     import std.string : toStringz;
     auto ab = SDL_LoadBMP (path.toStringz);