Hello qt & c++ fans,

I have some probs overloading the [] operator of my templated grid class.
The template class looks basically like this:

Qt Code: 
  1. template<class T> class Grid
  2. {
  3. 	public:
  4. 		Grid(int width, int height) : _pMat(NULL), _iWidth(0), _iHeight(0){
  5. 			_iWidth = width;
  6. 			_iHeight = height;
  7. 			_pMat = createGrid(width, height);
  8. 		}
  9.  
  10. 		~Grid(void){
  11. 			destroyGrid();
  12. 		}
  13.  
  14. 		Matrix2Dim(const Matrix2Dim<T> &mat){//cpy...}
  15. 		Matrix2Dim<T>& operator=(const Matrix2Dim<T> &mat){//cpy...}
  16.  
  17. 	private:
  18. 		T** createGrid(int width, int height){
  19. 			T **pMat = NULL;
  20. 			pMat = new T *[height];
  21. 			pMat[0] = new T [height * width];
  22. 			for (int i = 0; i < height; i++)
  23. 				pMat[i] = &pMat[0][(i*width)];
  24. 			return pMat;
  25. 		}
  26.  
  27. 		void destroyGrid(void){
  28. 			if(_pMat != NULL){
  29. 				delete _pMat[0];
  30. 				delete[] _pMat;
  31. 				_pMat = NULL;
  32. 				_iWidth = _iHeight = 0;
  33. 			}
  34. 		}
  35. 		int _iWidth;
  36. 		int _iHeight;
  37. 		T** _pMat;
  38. };
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now I'd like to access data of the class with the [] operator:
Qt Code: 
  1. Grid<int> *test = new Grid<int>(2, 2);
  2. test[1][1] = 1;
  3. std::cout << test[1][1] << std::endl;
  4. delete test;
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everything I tried to overload the [] operator failed :/, so maybe somebody here knows how to do it???
Qt Code: 
  1. T  *operator[](int value) {  
  2. 	return ???;
  3. }
  4.  
  5. const T  *operator[](int value) const{  
  6. 	return ???;
  7. }
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thanks and regards
darksaga