Enumerate and Host Control Panel Applets using C#.

using System;

namespace AppletEngine
{
	/// <summary>
	/// Summary description for AppletMessages.
	/// </summary>
	public enum AppletMessages
	{
		Initialize = 1,
		/*  This message is sent to indicate CPlApplet() was found. */
		/*  lParam1 and lParam2 are not defined. */
		/*  Return TRUE or FALSE indicating whether the control panel should proceed. */

		GetCount = 2,
		/*  This message is sent to determine the number of applets to be displayed. */
		/*  lParam1 and lParam2 are not defined. */
		/*  Return the number of applets you wish to display in the control */
		/*  panel window. */

		Inquire = 3,
		/*  This message is sent for information about each applet. */
		/*  A CPL SHOULD HANDLE BOTH THE CPL_INQUIRE AND CPL_NEWINQUIRE MESSAGES. */
		/*  The developer must not make any assumptions about the order or dependance */
		/*  of CPL inquiries. */
		/*  lParam1 is the applet number to register, a value from 0 to */
		/*  (CPL_GETCOUNT - 1).  lParam2 is a far ptr to a CPLINFO structure. */
		/*  Fill in CPLINFO's IconResourceId, NameResourceId, InformationResourceId and AppletDefinedData fields with */
		/*  the resource id for an icon to display, name and description string ids, */
		/*  and a long data item associated with applet #lParam1.  This information */
		/*  may be cached by the caller at runtime and/or across sessions. */
		/*  To prevent caching, see CPL_DYNAMIC_RES, above.  */

		Select = 4,
		/*  The CPL_SELECT message has been deleted. */

		DoubleClick = 5,
		/*  This message is sent when the applet's icon has been double-clicked */
		/*  upon.  lParam1 is the applet number which was selected.  lParam2 is the */
		/*  applet's AppletDefinedData value. */
		/*  This message should initiate the applet's dialog box. */

		Stop = 6,
		/*  This message is sent for each applet when the control panel is exiting. */
		/*  lParam1 is the applet number.  lParam2 is the applet's AppletDefinedData  value. */
		/*  Do applet specific cleaning up here. */

		Exit = 7,
		/*  This message is sent just before the control panel calls FreeLibrary. */
		/*  lParam1 and lParam2 are not defined. */
		/*  Do non-applet specific cleaning up here. */

		NewInquire = 8
		/* Same as CPL_INQUIRE execpt lParam2 is a pointer to a NEWCPLINFO struct. */
		/*  A CPL SHOULD HANDLE BOTH THE CPL_INQUIRE AND CPL_NEWINQUIRE MESSAGES. */
		/*  The developer must not make any assumptions about the order or dependance */
		/*  of CPL inquiries. */
	}
}