//In Lightning Sprite.cpp//
void WSL::Components::Lightning_Sprite::Draw( sf::RenderWindow *window )
{
    Animate();
    //The next line is line 159.//
    window->Draw( t );
}
//The error.//
1>Lightning Sprite.cpp
1>c:\users\aperson\desktop\my folders\projects\computer programming\multi langual\balloon tdf source\white-storm lightning\white-storm lightning\lightning sprite.cpp(159) : error C2027: use of undefined type 'sf::RenderWindow'
1>        c:\program files (x86)\microsoft visual studio 9.0\vc\include\sfml\graphics\image.hpp(40) : see declaration of 'sf::RenderWindow'
1>c:\users\aperson\desktop\my folders\projects\computer programming\multi langual\balloon tdf source\white-storm lightning\white-storm lightning\lightning sprite.cpp(159) : error C2227: left of '->Draw' must point to class/struct/union/generic type