The ilCopyImage function copies an image to the current image.

Src

Name of an image to copy to the current image.

ilCopyImage copies the attributes and data from the image named in Src. The same image bound before calling ilCopyImage remains bound afterward.

IL_ILLEGAL_OPERATION - There is currently no image bound. Use ilGenImages and ilBindImage before calling this function.
IL_OUT_OF_MEMORY - Could not allocate memory for the new image data.

ilGenImages, ilBindImage