Managed C++/CLI

/// <summary>
/// An LP_Pinner object pins an object for as long as the LP_Pinner
/// object is alive.
/// </summary>
/// <remarks>
/// This is the preferred use when the pointer value is not needed:
///		using (new LP_Pinner(objectThatNeedsPinning)) {
///			.. use the object here, it is pinned now ...
///		}
/// This is the preferred use when the pointer value is needed:
///		using (LP_Pinner pinning=new LP_Pinner(objectThatNeedsPinning)) {
///		    IntPtr ptr=pinning.Ptr;
///			.. use the object here, it is pinned now ...
///		}
/// </remarks>
public class LP_Pinner : IDisposable {
	private static ILP_Environment env=LP_Environment.GetEnvironment();
	private GCHandle handle;
	private bool disposed;
	private IntPtr ptr;
 
	/// <summary>
	/// Creates an instance op LP_Pinner, and pins the argument.
	/// </summary>
	/// <param name="obj"></param>
	public LP_Pinner(object obj) {
		//env.log(0,"AllocPinned "+obj.GetType().Name);
		handle=GCHandle.Alloc(obj, GCHandleType.Pinned);
		ptr=handle.AddrOfPinnedObject();
	}
 
	/// <summary>
	/// Undoes the pinning.
	/// </summary>
	~LP_Pinner() {
		Dispose();
	}
 
	/// <summary>
	/// Disposes of the object's internal resources.
	/// </summary>
	public void Dispose() {
		if (!disposed) {
			//env.log(0,"Free");
			disposed=true;
			handle.Free();
			ptr=IntPtr.Zero;
		}
	}
 
	/// <summary>
	/// Returns the pointer to the pinned object.
	/// </summary>
	public IntPtr Ptr {get {return ptr;}}
}	

int const * const * const * const * const * const * const * const * const var;

mooncry wrote:

i got stuck in the beginning

BuckBrown wrote:

'send to back'?

foreach (CheckBox cb in myPanel.Controls) {
    cb.Checked=false;
}

foreach (Control c in myPanel.Controls) {
    CheckBox cb=c as CheckBox; // is either c cast to CheckBox, or null
    if (cb!=null) cb.Checked=false;
}