C#

void function(char** data, int nRows)
{
 for (int i = 0; i < nRows; i++)
 {
   int nCols = _msize(data[i]);
   for (j = 0; j < nCols; j++)
    char val = data[i][j];
 }
}

unsafe void MyFunction(IEnumerable<byte[]> data)
{
 var handles = data.Select(d => GCHandle.Alloc(d, GCHandleType.Pinned));
 var ptrs = handles.Select(h => h.AddrOfPinnedObject());
 IntPtr[] dataPtrs = ptrs.ToArray();
 uint nRows = (uint)dataPtrs.Length;
 
 function(dataPtrs, nRows); 
 
 handles.ToList().ForEach(h => h.Free());
}

[DllImport("function.dll", CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Unicode)]
static extern unsafe internal void function(IntPtr[] data, uint nRows);

Image bmpImage = Image.FromFile("C:\\barcode.bmp");
     Bitmap bm = new Bitmap(bmpImage, new Size(192, 96));

     Graphics gr = Graphics.FromImage(bm);
     gr.SmoothingMode = SmoothingMode.HighQuality;
     gr.InterpolationMode = InterpolationMode.High;
     Rectangle rectDestination = new Rectangle(0, 0, 192, 96);
     ImageCodecInfo codec = ImageCodecInfo.GetImageEncoders()[1];
     EncoderParameters eParams = new EncoderParameters(1);
     eParams.Param[0] = new EncoderParameter(System.Drawing.Imaging.Encoder.Quality, 100L);
     gr.DrawImage(bm, rectDestination, 0, 0, 192, 96, GraphicsUnit.Pixel);
     PictureBox pbox = new PictureBox();
     pbox.Image = bm;
     gr.Dispose();
     pbox.Image.Save("C:\\barcode_resized.bmp");

Could not load file or assembly 'log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=692fbea5521e1304' or 
one of its dependencies. The system cannot find the file specified.":"log4net, Version=1.2.10.0, Culture=neutral, 
PublicKeyToken=692fbea5521e1304"

private void InitializeComponent()
{
    this.CRViewer = new CrystalDecisions.Windows.Forms.CrystalReportViewer();              //<===== EXCEPTION HERE
    this.SuspendLayout();
    // 
    // CRViewer
    // 
    this.CRViewer.ActiveViewIndex = -1;
    this.CRViewer.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
    this.CRViewer.Cursor = System.Windows.Forms.Cursors.Default;
    this.CRViewer.Dock = System.Windows.Forms.DockStyle.Fill;
    this.CRViewer.Location = new System.Drawing.Point(0, 0);
    this.CRViewer.Name = "CRViewer";
    this.CRViewer.Size = new System.Drawing.Size(508, 379);
    this.CRViewer.TabIndex = 0;
    // 
    // crlReportViewer
    // 
    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    this.Controls.Add(this.CRViewer);
    this.Name = "crlReportViewer";
    this.Size = new System.Drawing.Size(508, 379);
    this.ResumeLayout(false);
}