C++ (Qt)float **myArr = new float*[N];for(size_t i=0; i<N; ++i) myArr[i] = new float[2];
C++ (Qt)void mySignal(float**, size_t);...emit mySignal(myArr, N);
C++ (Qt)void mySignal(double arr[][2], size_t N);
C++ (Qt)int N;N=...double Array[N][2];emit mySignal(Array, N);
C++ (Qt)QPointF *NewArray;и в paintEventNewArray = new QPointF[N];