IntPtr causing memory leak?

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::Drawing::Imaging::PixelFormat::Format24bppRgb, ip);

delete[] ip;
}

Your code is not a VC++ nor a native C++.
Try to ask in the Managed C++/CLI forum

Victor is right that you're in the wrong section but maybe we can get this one sorted out quickly.

Keep in mind that, though the name suggests something else, IntPtr is no pointer! It's just an integral type with the machine's word size, IOW pointer size. (Maybe the should've better named it PtrInt.) Therefore, this doesn't make sense and your memory leak is no surprise:

Quote:

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Originally Posted by Qmage

Code:

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delete[] ip;

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I wonder why this didn't raise a compilation error in the first place. There is a conversion from IntPtr to void *, but according to MSDN it's explicit. Try this instead:

Code:

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delete[] ip.ToPointer();

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I didn't check the commented-out portions of your code.

In case this doesn't solve the problem and/or you have more questions about C++/CLI, please post them in the appropriate section.

Please use code tags when posting code.

Ah, and... Welcome to CodeGuru! :)