the loadImage function returns an ImageSourceRef, which can then be used to create the actual texture. In the current version of Cinder, you should use a shared pointer to a gl::Texture, which is called a gl::TextureRef. Better still, try to specify the type of the texture, e.g. gl::Texture2dRef. Finally, you may want to load your image from the assets folder, so use loadAsset to find it for you.

To summarize: here's how to load the image and create a texture from it:

gl::Texture2dRef texture = gl::Texture2d::create( loadImage( loadAsset( "image.jpg" ) ) );

-Paul

P.S.: the Texture classes are defined in "cinder/gl/Texture.h" , but you can also include "cinder/gl/gl.h" to get access to all the OpenGL classes. The loadImage function is part of the "cinder/ImageIo.h" , which is already included if you include "cinder/gl/Texture.h" .

this is the solution I found from my part ,

1. 
   
2. fs::path path = fs::path("image.jpg");
3. gl::TextureRef texture = gl::Texture::create(loadImage(path)); //

I was a bit confused because I was trying to learn with tutorials like this one 

but it seems to be out-of-date.

Cinder is great , I want to use this wonderful framework , even the Cinder community is less active than others C++ frameworks . Thanks for your time , and sorry to asked an obvious question like this.