C#

BOOL __stdcall SetFileBlockLocation(HANDLE address, LARGE_INTEGER position)
{
	return SetFilePointerEx(address, position, NULL, FILE_BEGIN);
}

public bool AssignPointerPosition(Int64 position, EFileMove movement)
{
	if (this.IsBufferReady == false)
		return false;

	if (Win32API.SetFilePointerEx(this.block, (long)position, IntPtr.Zero, movement) == false)
	{
		this.errorcode = Marshal.GetLastWin32Error();
                this.errorpos = MFTHaltPosition.MoveFile;
                return false;
	}
            
	return true;
}

form f = new form();
Button pbutton = new Button()..
TextBox pText = new TextBox()...
...
f.controls.add(pButton)
f.controls.add(pText)
....

private void MyHoverHandler(object sender, EventArgs e)
{
  //Here I want to be able to set TextBox to "some text" when I hover over the buton?
   //How do I get to pText, kinda like GetDlgItem()...in C++?
   // I am guessing I have to run through the forms controls may be?
}

using System;
using System.Windows.Forms;
using System.Windows.Forms.Design;

[System.ComponentModel.DesignerCategory("code")]
[ToolStripItemDesignerAvailability(ToolStripItemDesignerAvailability.ToolStrip | ToolStripItemDesignerAvailability.ToolStrip)]

public class ToolStripCheckBox : ToolStripControlHost
{
   
    public ToolStripCheckBox() : base(new CheckBox())
    {
        
    }

    public CheckBox CheckBoxControl
    {
        get { return Control as CheckBox; }
    }

    public bool Checked
    {
        get { return CheckBoxControl.Checked; }
        set { CheckBoxControl.Checked = value; }
    }

    public event EventHandler CheckedChanged;

    public void OnCheckedChanged(object sender, EventArgs e)
    {
        // not thread safe!
        if (CheckedChanged != null)
        {
            CheckedChanged(sender, e);
        }
    }

    protected override void OnSubscribeControlEvents(Control control)
    {
        base.OnSubscribeControlEvents(control);
        (control as CheckBox).CheckedChanged += OnCheckedChanged;
    }

    protected override void OnUnsubscribeControlEvents(Control control)
    {
        base.OnUnsubscribeControlEvents(control);
        (control as CheckBox).CheckedChanged -= OnCheckedChanged;
    }
}