How to Convert Ruby string to a C++ char pointer

Question

I trying to call a Win32Api dll function in Ruby:

LoadTexture = Win32API.new('System/SFML.dll', 'sfml_load_texture', 'p', 'p')

My code calling:

LoadTexture.call("folder/file.png")

My second try to convert data (just work with wchar_t)

  buf = ''

  for i in 0..filename.size - 1
    buf += filename[i] + 0.chr
  end

  buf += 0.chr * 260

  LoadTexture.call(buf)

DLL function

I get

Failed to load image "=»`¶È; ð¿w c H ". Reason: Unable to open

Please post error messages as text not grey on black images. — Richard Critten
– Richard Critten, Commented May 19, 2018 at 18:15

T. Herzke · Accepted Answer · 2021-05-18 13:27:15Z

1

sfml has a ruby binding. The sfml project links to the ruby binding: https://www.sfml-dev.org/download/bindings.php. Loading textures appears to be supported by the binding.

answered Jun 18, 2018 at 19:54

T. Herzke

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