IntPtr causing memory leak?

[Qmage]

this function is in a loop, and when i run the program, the line with intptr is giving me memory problems, can anyone help please? thanks


void showImage(IplImage *img,System::Windows::Forms::PictureBox^ picturebox)
{

IntPtr ip(new unsigned char[img->widthStep*img->height]); // this line causing memory usage to keep going up very fast

//memcpy(ip.ToPointer(),img->imageData,img->widthStep*img->height);

//picturebox->Image = gcnew Bitmap(img->width,img->height, img->widthStep, System:rawing::Imaging::PixelFormat::Format24bppRgb, ip);

delete[] ip;
}