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+/**
+ * vim: set ts=4 :
+ * =============================================================================
+ * SourceMod (C)2004-2008 AlliedModders LLC.  All rights reserved.
+ * =============================================================================
+ *
+ * This file is part of the SourceMod/SourcePawn SDK.
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, version 3.0, as published by the
+ * Free Software Foundation.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * As a special exception, AlliedModders LLC gives you permission to link the
+ * code of this program (as well as its derivative works) to "Half-Life 2," the
+ * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
+ * by the Valve Corporation.  You must obey the GNU General Public License in
+ * all respects for all other code used.  Additionally, AlliedModders LLC grants
+ * this exception to all derivative works.  AlliedModders LLC defines further
+ * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
+ * or <http://www.sourcemod.net/license.php>.
+ *
+ * Version: $Id$
+ */
+ 
+#if defined _menus_included
+ #endinput
+#endif
+#define _menus_included
+
+/**
+ * Low-level drawing style of the menu.
+ */
+enum MenuStyle
+{
+	MenuStyle_Default = 0,		/**< The "default" menu style for the mod */
+	MenuStyle_Valve = 1,		/**< The Valve provided menu style (Used on HL2DM) */
+	MenuStyle_Radio = 2,		/**< The simpler menu style commonly used on CS:S */
+};
+
+/**
+ * Different actions for the menu "pump" callback
+ */
+enum MenuAction
+{
+	MenuAction_Start = (1<<0),		/**< A menu has been started (nothing passed) */
+	MenuAction_Display = (1<<1),	/**< A menu is about to be displayed (param1=client, param2=MenuPanel Handle) */
+	MenuAction_Select = (1<<2),		/**< An item was selected (param1=client, param2=item) */
+	MenuAction_Cancel = (1<<3),		/**< The menu was cancelled (param1=client, param2=reason) */
+	MenuAction_End = (1<<4),		/**< A menu display has fully ended.
+										 param1 is the MenuEnd reason, and if it's MenuEnd_Cancelled, then 
+										 param2 is the MenuCancel reason from MenuAction_Cancel.
+										 */
+	MenuAction_VoteEnd = (1<<5),	/**< (VOTE ONLY): A vote sequence has succeeded (param1=chosen item) 
+										 This is not called if SetVoteResultCallback has been used on the menu. */
+	MenuAction_VoteStart = (1<<6), 	/**< (VOTE ONLY): A vote sequence has started (nothing passed) */
+	MenuAction_VoteCancel = (1<<7),	/**< (VOTE ONLY): A vote sequence has been cancelled (param1=reason) */
+	MenuAction_DrawItem = (1<<8),	/**< An item is being drawn; return the new style (param1=client, param2=item) */
+	MenuAction_DisplayItem = (1<<9),/**< Item text is being drawn to the display (param1=client, param2=item)
+										  To change the text, use RedrawMenuItem().
+										  If you do so, return its return value.  Otherwise, return 0.
+										  */
+};
+
+/** Default menu actions */
+#define MENU_ACTIONS_DEFAULT	MenuAction_Select|MenuAction_Cancel|MenuAction_End
+/** All menu actions */
+#define MENU_ACTIONS_ALL		MenuAction:0xFFFFFFFF
+
+#define MENU_NO_PAGINATION		0		/**< Menu should not be paginated (10 items max) */
+#define MENU_TIME_FOREVER		0		/**< Menu should be displayed as long as possible */
+
+#define ITEMDRAW_DEFAULT		(0)		/**< Item should be drawn normally */
+#define ITEMDRAW_DISABLED		(1<<0)	/**< Item is drawn but not selectable */
+#define ITEMDRAW_RAWLINE		(1<<1)	/**< Item should be a raw line, without a slot */
+#define ITEMDRAW_NOTEXT			(1<<2)	/**< No text should be drawn */
+#define ITEMDRAW_SPACER			(1<<3)	/**< Item should be drawn as a spacer, if possible */
+#define ITEMDRAW_IGNORE	((1<<1)|(1<<2))	/**< Item should be completely ignored (rawline + notext) */
+#define ITEMDRAW_CONTROL		(1<<4)	/**< Item is control text (back/next/exit) */
+
+#define MENUFLAG_BUTTON_EXIT		(1<<0)	/**< Menu has an "exit" button (default if paginated) */
+#define MENUFLAG_BUTTON_EXITBACK	(1<<1)	/**< Menu has an "exit back" button */
+#define MENUFLAG_NO_SOUND			(1<<2)	/**< Menu will not have any select sounds */
+#define MENUFLAG_BUTTON_NOVOTE		(1<<3)	/**< Menu has a "No Vote" button at slot 1 */
+
+#define VOTEINFO_CLIENT_INDEX		0		/**< Client index */
+#define VOTEINFO_CLIENT_ITEM		1		/**< Item the client selected, or -1 for none */
+#define VOTEINFO_ITEM_INDEX			0		/**< Item index */
+#define VOTEINFO_ITEM_VOTES			1		/**< Number of votes for the item */
+
+#define VOTEFLAG_NO_REVOTES			(1<<0)	/**< Players cannot change their votes */
+
+/**
+ * Reasons a menu can be cancelled (MenuAction_Cancel).
+ */
+enum
+{
+	MenuCancel_Disconnected = -1,	/**< Client dropped from the server */
+	MenuCancel_Interrupted = -2,	/**< Client was interrupted with another menu */
+	MenuCancel_Exit = -3,			/**< Client exited via "exit" */
+	MenuCancel_NoDisplay = -4,		/**< Menu could not be displayed to the client */
+	MenuCancel_Timeout = -5,		/**< Menu timed out */
+	MenuCancel_ExitBack = -6,		/**< Client selected "exit back" on a paginated menu */
+};
+
+/**
+ * Reasons a vote can be cancelled (MenuAction_VoteCancel).
+ */
+enum
+{
+	VoteCancel_Generic = -1,		/**< Vote was generically cancelled. */
+	VoteCancel_NoVotes = -2,		/**< Vote did not receive any votes. */
+};
+
+/**
+ * Reasons a menu ended (MenuAction_End).
+ */
+enum
+{
+	MenuEnd_Selected = 0,			/**< Menu item was selected */
+	MenuEnd_VotingDone = -1,		/**< Voting finished */
+	MenuEnd_VotingCancelled = -2,	/**< Voting was cancelled */
+	MenuEnd_Cancelled = -3,			/**< Menu was cancelled (reason in param2) */
+	MenuEnd_Exit = -4,				/**< Menu was cleanly exited via "exit" */
+	MenuEnd_ExitBack = -5,			/**< Menu was cleanly exited via "back" */
+};
+
+/**
+ * Describes a menu's source
+ */
+enum MenuSource
+{
+	MenuSource_None = 0,			/**< No menu is being displayed */	
+	MenuSource_External = 1,		/**< External menu */
+	MenuSource_Normal = 2,			/**< A basic menu is being displayed */
+	MenuSource_RawPanel = 3,		/**< A display is active, but it is not tied to a menu */
+};
+
+/**
+ * Called when a menu action is completed.
+ *
+ * @param menu				The menu being acted upon.
+ * @param action			The action of the menu.
+ * @param param1			First action parameter (usually the client).
+ * @param param2			Second action parameter (usually the item).
+ * @noreturn
+ */
+functag public MenuHandler(Handle:menu, MenuAction:action, param1, param2);
+
+/**
+ * Creates a new, empty menu using the default style.
+ * 
+ * @param handler			Function which will receive menu actions.
+ * @param actions			Optionally set which actions to receive.  Select, 
+ *							Cancel, and End will always be received regardless
+ *							of whether they are set or not.  They are also
+ *							the only default actions.
+ * @return					A new menu Handle.
+ */
+native Handle:CreateMenu(MenuHandler:handler, MenuAction:actions=MENU_ACTIONS_DEFAULT);
+
+/**
+ * Displays a menu to a client.
+ *
+ * @param menu				Menu Handle.
+ * @param client			Client index.
+ * @param time				Maximum time to leave menu on the screen.
+ * @return					True on success, false on failure.
+ * @error					Invalid Handle or client not in game.
+ */
+native bool:DisplayMenu(Handle:menu, client, time);
+
+/**
+ * Displays a menu to a client, starting from the given item.
+ *
+ * @param menu				Menu Handle.
+ * @param client			Client index.
+ * @param first_item		First item to begin drawing from.
+ * @param time				Maximum time to leave menu on the screen.
+ * @return					True on success, false on failure.
+ * @error					Invalid Handle or client not in game.
+ */
+native bool:DisplayMenuAtItem(Handle:menu, client, first_item, time);
+
+/**
+ * Appends a new item to the end of a menu.
+ *
+ * @param menu				Menu Handle.
+ * @param info				Item information string.
+ * @param display			Default item display string.
+ * @param style				Drawing style flags.  Anything other than DEFAULT or 
+ *							DISABLED will be completely ignored when paginating.
+ * @return					True on success, false on failure.
+ * @error					Invalid Handle or item limit reached.
+ */
+native AddMenuItem(Handle:menu, 
+					const String:info[], 
+					const String:display[], 
+					style=ITEMDRAW_DEFAULT);
+
+/**
+ * Inserts an item into the menu before a certain position; the new item will
+ * be at the given position and all next items pushed forward.
+ *
+ * @param menu				Menu Handle.
+ * @param position			Position, starting from 0.
+ * @param info				Item information string.
+ * @param display			Default item display string.
+ * @param style				Drawing style flags.  Anything other than DEFAULT or 
+ *							DISABLED will be completely ignored when paginating.
+ * @return					True on success, false on failure.
+ * @error					Invalid Handle or menu position.
+ */
+native bool:InsertMenuItem(Handle:menu,
+						position, 
+						const String:info[], 
+						const String:display[], 
+						style=ITEMDRAW_DEFAULT);
+
+/**
+ * Removes an item from the menu.
+ *
+ * @param menu				Menu Handle.
+ * @param position			Position, starting from 0.
+ * @return					True on success, false on failure.
+ * @error					Invalid Handle or menu position.
+ */
+native bool:RemoveMenuItem(Handle:menu, position);
+
+/**
+ * Removes all items from a menu.
+ *
+ * @param menu				Menu Handle.
+ * @noreturn
+ * @error					Invalid Handle or menu position.
+ */
+native RemoveAllMenuItems(Handle:menu);
+
+/**
+ * Retrieves information about a menu item.
+ *
+ * @param menu				Menu Handle.
+ * @param position			Position, starting from 0.
+ * @param infoBuf			Info buffer.
+ * @param infoBufLen		Maximum length of the info buffer.
+ * @param style				By-reference variable to store drawing flags.
+ * @param dispBuf			Display buffer.
+ * @param dispBufLen		Maximum length of the display buffer.
+ * @return					True on success, false if position is invalid.
+ * @error					Invalid Handle.
+ */
+native bool:GetMenuItem(Handle:menu, 
+						position, 
+						String:infoBuf[], 
+						infoBufLen, 
+						&style=0, 
+						String:dispBuf[]="",
+						dispBufLen=0);
+						
+/**
+ * Returns the first item on the page of a currently selected menu.
+ *
+ * This is only valid inside a MenuAction_Select callback.
+ *
+ * @return					First item number on the page the client was viewing 
+ *							before selecting the item in the callback.  This can 
+ *							be used to re-display the menu from the original 
+ *							position.
+ * @error					Not called from inside a MenuAction_Select callback.
+ */
+native GetMenuSelectionPosition();
+
+/**
+ * Returns the number of items in a menu.
+ *
+ * @param menu				Menu Handle.
+ * @return					Number of items in the menu.
+ * @error					Invalid Handle.
+ */
+native GetMenuItemCount(Handle:menu);
+
+/**
+ * Sets whether the menu should be paginated or not.
+ *
+ * If itemsPerPage is MENU_NO_PAGINATION, and the exit button flag is set, 
+ * then the exit button flag is removed.  It can be re-applied if desired.
+ *
+ * @param menu				Handle to the menu.
+ * @param itemsPerPage		Number of items per page, or MENU_NO_PAGINATION.
+ * @return					True on success, false if pagination is too high or 
+ *							low.
+ * @error					Invalid Handle.
+ */
+native bool:SetMenuPagination(Handle:menu, itemsPerPage);
+
+/**
+ * Returns a menu's pagination setting.
+ *
+ * @param menu				Handle to the menu.
+ * @return					Pagination setting.
+ * @error					Invalid Handle.
+ */
+native GetMenuPagination(Handle:menu);
+
+/**
+ * Returns a menu's MenuStyle Handle.  The Handle
+ * is global and cannot be freed.
+ *
+ * @param menu				Handle to the menu.
+ * @return 					Handle to the menu's draw style.
+ * @error					Invalid Handle.
+ */
+native Handle:GetMenuStyle(Handle:menu);
+
+/**
+ * Sets the menu's default title/instruction message.
+ *
+ * @param menu				Menu Handle.
+ * @param fmt				Message string format
+ * @param ...				Message string arguments.
+ * @noreturn
+ * @error					Invalid Handle.
+ */
+native SetMenuTitle(Handle:menu, const String:fmt[], any:...);
+
+/**
+ * Returns the text of a menu's title.
+ *
+ * @param menu				Menu Handle.
+ * @param buffer			Buffer to store title.
+ * @param maxlength			Maximum length of the buffer.
+ * @return					Number of bytes written.
+ * @error					Invalid Handle/
+ */
+native GetMenuTitle(Handle:menu, String:buffer[], maxlength);
+
+/**
+ * Creates a raw MenuPanel based off the menu's style.
+ * The Handle must be freed with CloseHandle().
+ *
+ * @param menu				Menu Handle.
+ * @return					A new MenuPanel Handle.
+ * @error					Invalid Handle.
+ */
+native Handle:CreatePanelFromMenu(Handle:menu);
+
+/**
+ * Returns whether or not the menu has an exit button.
+ * By default, menus have an exit button.
+ *
+ * @param menu				Menu Handle.
+ * @return 					True if the menu has an exit button; false otherwise.
+ * @error					Invalid Handle.
+ */
+native bool:GetMenuExitButton(Handle:menu);
+
+/**
+ * Sets whether or not the menu has an exit button.  By default, paginated menus 
+ * have an exit button.
+ *
+ * If a menu's pagination is changed to MENU_NO_PAGINATION, and the pagination 
+ * was previously a different value, then the Exit button status is changed to 
+ * false.  It must be explicitly re-enabled afterwards.
+ *
+ * If a non-paginated menu has an exit button, then at most 9 items will be 
+ * displayed.
+ *
+ * @param menu				Menu Handle.
+ * @param button			True to enable the button, false to remove it.
+ * @return 					True if allowed; false on failure.
+ * @error					Invalid Handle.
+ */
+native bool:SetMenuExitButton(Handle:menu, bool:button);
+
+/**
+ * Returns whether or not the menu has an "exit back" button.  By default, 
+ * menus do not have an exit back button.  
+ *
+ * Exit Back buttons appear as "Back" on page 1 of paginated menus and have 
+ * functionality defined by the user in MenuEnd_ExitBack.
+ *
+ * @param menu				Menu Handle.
+ * @return 					True if the menu has an exit back button; false otherwise.
+ * @error					Invalid Handle.
+ */
+native bool:GetMenuExitBackButton(Handle:menu);
+
+/**
+ * Sets whether or not the menu has an "exit back" button. By default, menus 
+ * do not have an exit back button.
+ *
+ * Exit Back buttons appear as "Back" on page 1 of paginated menus and have 
+ * functionality defined by the user in MenuEnd_ExitBack.
+ *
+ * @param menu				Menu Handle.
+ * @param button			True to enable the button, false to remove it.
+ * @error					Invalid Handle.
+ */
+native SetMenuExitBackButton(Handle:menu, bool:button);
+
+/**
+ * Sets whether or not the menu has a "no vote" button in slot 1.
+ * By default, menus do not have a no vote button.
+ *
+ * @param menu				Menu Handle.
+ * @param button			True to enable the button, false to remove it.
+ * @return 					True if allowed; false on failure.
+ * @error					Invalid Handle.
+ */
+native bool:SetMenuNoVoteButton(Handle:menu, bool:button);
+
+/**
+ * Cancels a menu from displaying on all clients.  While the
+ * cancellation is in progress, this menu cannot be re-displayed
+ * to any clients.
+ *
+ * The menu may still exist on the client's screen after this command.
+ * This simply verifies that the menu is not being used anywhere.
+ *
+ * If any vote is in progress on a menu, it will be cancelled.
+ *
+ * @param menu				Menu Handle.
+ * @noreturn
+ * @error					Invalid Handle.
+ */
+native CancelMenu(Handle:menu);
+
+/**
+ * Retrieves a menu's option flags.
+ *
+ * @param menu				Menu Handle.
+ * @return					A bitstring of MENUFLAG bits.
+ * @error					Invalid Handle.
+ */
+native GetMenuOptionFlags(Handle:menu);
+
+/**
+ * Sets a menu's option flags.
+ *
+ * If a certain bit is not supported, it will be stripped before being set.
+ * See SetMenuExitButton() for information on Exit buttons.
+ * See SetMenuExitBackButton() for information on Exit Back buttons.
+ *
+ * @param menu				Menu Handle.
+ * @param flags				A new bitstring of MENUFLAG bits.
+ * @noreturn
+ * @error					Invalid Handle.
+ */
+native SetMenuOptionFlags(Handle:menu, flags);
+
+/**
+ * Returns whether a vote is in progress.
+ *
+ * @param menu				Deprecated; no longer used.
+ * @return					True if a vote is in progress, false otherwise.
+ */
+native bool:IsVoteInProgress(Handle:menu=INVALID_HANDLE);
+
+/**
+ * Cancels the vote in progress.
+ *
+ * @noreturn
+ * @error					If no vote is in progress.
+ */
+native CancelVote();
+
+/**
+ * Broadcasts a menu to a list of clients.  The most selected item will be 
+ * returned through MenuAction_End.  On a tie, a random item will be returned 
+ * from a list of the tied items.
+ *
+ * Note that MenuAction_VoteEnd and MenuAction_VoteStart are both
+ * default callbacks and do not need to be enabled.
+ *
+ * @param menu				Menu Handle.
+ * @param clients			Array of clients to broadcast to.
+ * @param numClients		Number of clients in the array.
+ * @param time				Maximum time to leave menu on the screen.
+ * @param flags				Optional voting flags.
+ * @return					True on success, false if this menu already has a vote session
+ *							in progress.
+ * @error					Invalid Handle, or a vote is already in progress.
+ */
+native bool:VoteMenu(Handle:menu, clients[], numClients, time, flags=0);
+
+/**
+ * Sends a vote menu to all clients.  See VoteMenu() for more information.
+ *
+ * @param menu				Menu Handle.
+ * @param time				Maximum time to leave menu on the screen.
+ * @param flags				Optional voting flags.
+ * @return					True on success, false if this menu already has a vote session
+ *							in progress.
+ * @error					Invalid Handle.
+ */
+stock bool:VoteMenuToAll(Handle:menu, time, flags=0)
+{
+	new total;
+	decl players[MaxClients];
+	
+	for (new i=1; i<=MaxClients; i++)
+	{
+		if (!IsClientInGame(i) || IsFakeClient(i))
+		{
+			continue;
+		}
+		players[total++] = i;
+	}
+	
+	return VoteMenu(menu, players, total, time, flags);
+}
+/**
+ * Callback for when a vote has ended and results are available.
+ *
+ * @param menu				The menu being voted on.
+ * @param num_votes			Number of votes tallied in total.
+ * @param num_clients		Number of clients who could vote.
+ * @param client_info		Array of clients.  Use VOTEINFO_CLIENT_ defines.
+ * @param num_items			Number of unique items that were selected.
+ * @param item_info			Array of items, sorted by count.  Use VOTEINFO_ITEM
+ *							defines.
+ * @noreturn
+ */
+functag public VoteHandler(Handle:menu,
+						   num_votes, 
+						   num_clients,
+						   const client_info[][2], 
+						   num_items,
+						   const item_info[][2]);	   
+
+/**
+ * Sets an advanced vote handling callback.  If this callback is set,
+ * MenuAction_VoteEnd will not be called.
+ *
+ * @param menu				Menu Handle.
+ * @param callback			Callback function.
+ * @noreturn
+ * @error					Invalid Handle or callback.
+ */
+native SetVoteResultCallback(Handle:menu, VoteHandler:callback);
+
+/**
+ * Returns the number of seconds you should "wait" before displaying
+ * a publicly invocable menu.  This number is the time remaining until
+ * (last_vote + sm_vote_delay).
+ *
+ * @return					Number of seconds to wait, or 0 for none.
+ */
+native CheckVoteDelay();
+
+/**
+ * Returns whether a client is in the pool of clients allowed 
+ * to participate in the current vote.  This is determined by 
+ * the client list passed to VoteMenu().
+ *
+ * @param client			Client index.
+ * @return					True if client is allowed to vote, false otherwise.
+ * @error					If no vote is in progress or client index is invalid.
+ */
+native bool:IsClientInVotePool(client);
+
+/**
+ * Redraws the current vote menu to a client in the voting pool.
+ *
+ * @param client			Client index.
+ * @param revotes			True to allow revotes, false otherwise.
+ * @return					True on success, false if the client is in the vote pool 
+ *							but cannot vote again.
+ * @error					No vote in progress, client is not in the voting pool, 
+ *							or client index is invalid.
+ */
+native bool:RedrawClientVoteMenu(client, bool:revotes=true);
+
+/**
+ * Returns a style's global Handle.
+ *
+ * @param style			Menu Style.
+ * @return				A Handle, or INVALID_HANDLE if not found or unusable.
+ */
+native Handle:GetMenuStyleHandle(MenuStyle:style);
+
+/**
+ * Creates a MenuPanel from a MenuStyle.  Panels are used for drawing raw 
+ * menus without any extra helper functions.  The Handle must be closed
+ * with CloseHandle().
+ *
+ * @param hStyle		MenuStyle Handle, or INVALID_HANDLE to use the default style.
+ * @return				A new MenuPanel Handle.
+ * @error				Invalid Handle other than INVALID_HANDLE.
+ */
+native Handle:CreatePanel(Handle:hStyle=INVALID_HANDLE);
+
+/** 
+ * Creates a Menu from a MenuStyle.  The Handle must be closed with 
+ * CloseHandle().
+ *
+ * @param hStyle		MenuStyle Handle, or INVALID_HANDLE to use the default style.
+ * @param handler		Function which will receive menu actions.
+ * @param actions		Optionally set which actions to receive.  Select, 
+ *						Cancel, and End will always be received regardless
+ *						of whether they are set or not.  They are also
+ *						the only default actions.
+ * @return				A new menu Handle.
+ * @error				Invalid Handle other than INVALID_HANDLE.
+ */
+native Handle:CreateMenuEx(Handle:hStyle=INVALID_HANDLE, MenuHandler:handler, MenuAction:actions=MENU_ACTIONS_DEFAULT);
+
+/**
+ * Returns whether a client is viewing a menu.
+ *
+ * @param client		Client index.
+ * @param hStyle		MenuStyle Handle, or INVALID_HANDLE to use the default style.
+ * @return				A MenuSource value.
+ * @error				Invalid Handle other than INVALID_HANDLE.
+ */
+native MenuSource:GetClientMenu(client, Handle:hStyle=INVALID_HANDLE);
+
+/** 
+ * Cancels a menu on a client.  This will only affect non-external menus.
+ *
+ * @param hStyle		MenuStyle Handle, or INVALID_HANDLE to use the default style.
+ * @param client		Client index.
+ * @param autoIgnore	If true, no menus can be re-drawn on the client during
+ *						the cancellation process.
+ * @return				True if a menu was cancelled, false otherwise.
+ */
+native bool:CancelClientMenu(client, bool:autoIgnore=false, Handle:hStyle=INVALID_HANDLE);
+
+/**
+ * Returns a style's maximum items per page.
+ *
+ * @param hStyle		MenuStyle Handle, or INVALID_HANDLE to use the default style.
+ * @return				Maximum items per page.
+ * @error				Invalid Handle other than INVALID_HANDLE.
+ */
+native GetMaxPageItems(Handle:hStyle=INVALID_HANDLE);
+
+/**
+ * Returns a MenuPanel's parent style.
+ *
+ * @param panel			A MenuPanel Handle.
+ * @return				The MenuStyle Handle that created the panel.
+ * @error				Invalid Handle.
+ */
+native Handle:GetPanelStyle(Handle:panel);
+
+/**
+ * Sets the panel's title.
+ *
+ * @param panel			A MenuPanel Handle.
+ * @param text			Text to set as the title.
+ * @param onlyIfEmpty	If true, the title will only be set if no title is set.
+ * @noreturn
+ * @error				Invalid Handle.
+ */
+native Handle:SetPanelTitle(Handle:panel, const String:text[], bool:onlyIfEmpty=false);
+
+/**
+ * Draws an item on a panel.  If the item takes up a slot, the position
+ * is returned.
+ *
+ * @param panel			A MenuPanel Handle.
+ * @param text			Display text to use.  If not a raw line, 
+ *						the style may automatically add color markup.
+ *						No numbering or newlines are needed.
+ * @param style			ITEMDRAW style flags.
+ * @return				A slot position, or 0 if item was a rawline or could not be drawn.
+ * @error				Invalid Handle.
+ */
+native DrawPanelItem(Handle:panel, const String:text[], style=ITEMDRAW_DEFAULT);
+
+/**
+ * Draws a raw line of text on a panel, without any markup other than a newline.
+ *
+ * @param panel			A MenuPanel Handle, or INVALID_HANDLE if inside a 
+ *						MenuAction_DisplayItem callback.
+ * @param text			Display text to use.
+ * @return				True on success, false if raw lines are not supported.
+ * @error				Invalid Handle.
+ */
+native DrawPanelText(Handle:panel, const String:text[]);
+
+/**
+ * Returns whether or not the given drawing flags are supported by
+ * the menu style.
+ *
+ * @param panel			A MenuPanel Handle.
+ * @param style			ITEMDRAW style flags.
+ * @return				True if item is drawable, false otherwise.
+ * @error				Invalid Handle.
+ */
+native CanPanelDrawFlags(Handle:panel, style);
+
+/**
+ * Sets the selectable key map of a panel.  This is not supported by
+ * all styles (only by Radio, as of this writing).  
+ *
+ * @param panel			A MenuPanel Handle.
+ * @param keys			An integer where each bit N allows key
+ *						N+1 to be selected.  If no keys are selectable,
+ *						then key 0 (bit 9) is automatically set.
+ * @return 				True if supported, false otherwise.
+ */
+native bool:SetPanelKeys(Handle:panel, keys);
+
+/**
+ * Sends a panel to a client.  Unlike full menus, the handler
+ * function will only receive the following actions, both of 
+ * which will have INVALID_HANDLE for a menu, and the client
+ * as param1.
+ *
+ * MenuAction_Select (param2 will be the key pressed)
+ * MenuAction_Cancel (param2 will be the reason)
+ *
+ * Also, if the menu fails to display, no callbacks will be called.
+ *
+ * @param panel			A MenuPanel Handle.
+ * @param client		A client to draw to.
+ * @param handler		The MenuHandler function to catch actions with.
+ * @param time			Time to hold the menu for.
+ * @return				True on success, false on failure.
+ * @error				Invalid Handle.
+ */
+native bool:SendPanelToClient(Handle:panel, client, MenuHandler:handler, time);
+
+/**
+ * @brief Returns the amount of text the menu can still hold.  If this is 
+ * limit is reached or overflowed, the text is silently truncated.  
+ *
+ * Radio menus: Currently 511 characters (512 bytes).
+ * Valve menus: Currently -1 (no meaning).
+ *
+ * @param panel			A MenuPanel Handle.
+ * @return				Number of characters that the menu can still hold, 
+ *						or -1 if there is no known limit.
+ * @error				Invalid Handle.
+ */
+native GetPanelTextRemaining(Handle:panel);
+
+/**
+ * @brief Returns the current key position.
+ *
+ * @param panel			A MenuPanel Handle.
+ * @return				Current key position starting at 1.
+ * @error				Invalid Handle.
+ */
+native GetPanelCurrentKey(Handle:panel);
+
+/**
+ * @brief Sets the next key position.  This cannot be used
+ * to traverse backwards.
+ *
+ * @param panel			A MenuPanel Handle.
+ * @param key			Key that is greater or equal to
+ *						GetPanelCurrentKey().
+ * @return				True on success, false otherwise.
+ * @error				Invalid Handle.
+ */
+native bool:SetPanelCurrentKey(Handle:panel, key);
+
+/**
+ * @brief Redraws menu text from inside a MenuAction_DisplayItem callback.
+ * 
+ * @param text			Menu text to draw.
+ * @return				Item position; must be returned via the callback.
+ */
+native RedrawMenuItem(const String:text[]);
+
+/**
+ * This function is provided for legacy code only.  Some older plugins may use 
+ * network messages instead of the panel API.  This function wraps the panel 
+ * API for eased portability into the SourceMod menu system.  
+ *
+ * This function is only usable with the Radio Menu style.  You do not need to 
+ * split up your menu into multiple packets; SourceMod will break the string 
+ * up internally.
+ *
+ * @param client		Client index.
+ * @param str			Full menu string as would be passed over the network. 
+ * @param time			Time to hold the menu for.
+ * @param keys			Selectable key bitstring.
+ * @param handler		Optional handler function, with the same rules as
+ *						SendPanelToClient().
+ * @return				True on success, false on failure.
+ * @error				Invalid client index, or radio menus not supported.
+ */
+native bool:InternalShowMenu(client, const String:str[], time, keys=-1, MenuHandler:handler=MenuHandler:-1);
+
+/**
+ * Retrieves voting information from MenuAction_VoteEnd.
+ *
+ * @param param2		Second parameter of MenuAction_VoteEnd.
+ * @param winningVotes	Number of votes received by the winning option.
+ * @param totalVotes	Number of total votes received.
+ * @noreturn
+ */
+stock GetMenuVoteInfo(param2, &winningVotes, &totalVotes)
+{
+	winningVotes = param2 & 0xFFFF;
+	totalVotes = param2 >> 16;
+}
+
+/**
+ * Quick stock to determine whether voting is allowed.  This doesn't let you 
+ * fine-tune a reason for not voting, so it's not recommended for lazily 
+ * telling clients that voting isn't allowed.
+ * 
+ * @return				True if voting is allowed, false if voting is in progress
+ *						or the cooldown is active.
+ */
+stock bool:IsNewVoteAllowed()
+{
+	if (IsVoteInProgress() || CheckVoteDelay() != 0)
+	{
+		return false;
+	}
+	
+	return true;
+}
+