C#

T Finn wrote:

ref IntPtr ptrHandle

T Finn wrote:

IntPtr (HANDLE).

Image original = pictureBox1.Image;
Bitmap bmp = new Bitmap(50, 50);
Graphics g = Graphics.FromImage(bmp);
g.DrawImage(original, new Rectangle(0, 0 , 50 , 50), 50, 50, 50, 50, GraphicsUnit.Pixel);
pictureBox2.Image = (Image)bmp;

////UserControl
public class MyControl : UserControl
{
    public MyControl() { }
    public event EventHandler DataAdded;
    ////All the properties that you want to track must be like this.
    public DataType PropertyName
    {
        get { return dataField; }
        set { this.dataField = value; this.OnDataAdded(); }
    }
    ////And this is the method taht will fire the event.
    private void OnDataAdded(object sender, EventArgs e)
    {
        if (this.DataAdded != null)
        {
            this.DataAdded(this.DataAdded, e);
        }
    }
}
////ParentForm
public class MyForm : Form
{
    ////Regular Methods and Fields.

    ////In the Init Method :
    this.MyInheritedUserControl.DataAdded+=new EventHandler(this.MyEventHandler);
}