Image Resize problems

[NanoBytes]

Ok, i am making an image resize algorithm. The function works perfectly so long as the desired width is divisible by 4 (so newWidth%4 == 0), but the desired height can be any number. I cant for the life of me figure out why the function would work if the number is divisible by four but not any other number. I would like the formula to work for any width.

void Image::Resize(int newWidth, int newHeight) {
    // ImageData     - An unsigned char* pointer to the image data
    // BytesPerPixel - An unsigned char, the bytes per pixel 3, or 4
    // Width         - An int, the original width of the image
    // Height        - An int, the original height of the image
    
    try {                                                       // Try to load the image
        if(!ImageData) throw("No Image has been loaded");
        unsigned char* newData = new unsigned char[newWidth*newHeight*BytesPerPixel];

        double scaleWidth = (double)newWidth/(double)Width;
        double scaleHeight = (double)newHeight/(double)Height;

        int pixel = 0;
        for(int cy = 0; cy < newHeight; cy++) {
            for(int cx = 0; cx < newWidth; cx++) {
                int nearestMatch = ((int)(cy/scaleHeight)*(Width*BytesPerPixel))
                                    +((int)(cx/scaleWidth)*BytesPerPixel);
                newData[pixel]   = ImageData[nearestMatch];
                newData[pixel+1] = ImageData[nearestMatch+1];
                newData[pixel+2] = ImageData[nearestMatch+2];
                if(BytesPerPixel == 4) newData[pixel+3] = ImageData[nearestMatch+3];
                pixel += BytesPerPixel;
            }
        }
        delete ImageData;
        ImageData = newData;
        Width = newWidth;
        Height = newHeight;
    } catch(const char* Error) {                                // If we encountered an error
        MessageBox(NULL,Error,"Error",                          // Send a popup box with the error
                   MB_OK|MB_ICONEXCLAMATION);
        return;                                                 // The image was not loaded
    }
}

The link below shows the same image resized, the first image (321x240) does not have a width divisible by 4, so it screws up, but the second (324x240) does, so it works.
http://nanobytes.comli.com/HTML/image-resize.html

Could one of you guys help me fix this so it will work with all dimensions

[bobdabilder]

Hey i am ginning up some code should get back to u tomorrow.

[NanoBytes]

Nope sorry, the issue was in my BMP loading function, I should have realized it with the whole %4 thing, im sorry if it was any trouble