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+//====== Copyright 1996-2013, Valve Corporation, All rights reserved. =======
+//
+// Purpose: interface to display html pages in a texture
+//
+//=============================================================================
+
+#ifndef ISTEAMHTMLSURFACE_H
+#define ISTEAMHTMLSURFACE_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "isteamclient.h"
+
+typedef uint32 HHTMLBrowser;
+const uint32 INVALID_HTMLBROWSER = 0;
+
+//-----------------------------------------------------------------------------
+// Purpose: Functions for displaying HTML pages and interacting with them
+//-----------------------------------------------------------------------------
+class ISteamHTMLSurface
+{
+public:
+ virtual ~ISteamHTMLSurface() {}
+
+ // Must call init and shutdown when starting/ending use of the interface
+ virtual bool Init() = 0;
+ virtual bool Shutdown() = 0;
+
+ // Create a browser object for display of a html page, when creation is complete the call handle
+ // will return a HTML_BrowserReady_t callback for the HHTMLBrowser of your new browser.
+ // The user agent string is a substring to be added to the general user agent string so you can
+ // identify your client on web servers.
+ // The userCSS string lets you apply a CSS style sheet to every displayed page, leave null if
+ // you do not require this functionality.
+ virtual SteamAPICall_t CreateBrowser( const char *pchUserAgent, const char *pchUserCSS ) = 0;
+
+ // Call this when you are done with a html surface, this lets us free the resources being used by it
+ virtual void RemoveBrowser( HHTMLBrowser unBrowserHandle ) = 0;
+
+ // Navigate to this URL, results in a HTML_StartRequest_t as the request commences
+ virtual void LoadURL( HHTMLBrowser unBrowserHandle, const char *pchURL, const char *pchPostData ) = 0;
+
+ // Tells the surface the size in pixels to display the surface
+ virtual void SetSize( HHTMLBrowser unBrowserHandle, uint32 unWidth, uint32 unHeight ) = 0;
+
+ // Stop the load of the current html page
+ virtual void StopLoad( HHTMLBrowser unBrowserHandle ) = 0;
+ // Reload (most likely from local cache) the current page
+ virtual void Reload( HHTMLBrowser unBrowserHandle ) = 0;
+ // navigate back in the page history
+ virtual void GoBack( HHTMLBrowser unBrowserHandle ) = 0;
+ // navigate forward in the page history
+ virtual void GoForward( HHTMLBrowser unBrowserHandle ) = 0;
+
+ // add this header to any url requests from this browser
+ virtual void AddHeader( HHTMLBrowser unBrowserHandle, const char *pchKey, const char *pchValue ) = 0;
+ // run this javascript script in the currently loaded page
+ virtual void ExecuteJavascript( HHTMLBrowser unBrowserHandle, const char *pchScript ) = 0;
+
+ enum EHTMLMouseButton
+ {
+ eHTMLMouseButton_Left = 0,
+ eHTMLMouseButton_Right = 1,
+ eHTMLMouseButton_Middle = 2,
+ };
+
+ // Mouse click and mouse movement commands
+ virtual void MouseUp( HHTMLBrowser unBrowserHandle, EHTMLMouseButton eMouseButton ) = 0;
+ virtual void MouseDown( HHTMLBrowser unBrowserHandle, EHTMLMouseButton eMouseButton ) = 0;
+ virtual void MouseDoubleClick( HHTMLBrowser unBrowserHandle, EHTMLMouseButton eMouseButton ) = 0;
+ // x and y are relative to the HTML bounds
+ virtual void MouseMove( HHTMLBrowser unBrowserHandle, int x, int y ) = 0;
+ // nDelta is pixels of scroll
+ virtual void MouseWheel( HHTMLBrowser unBrowserHandle, int32 nDelta ) = 0;
+
+ enum EMouseCursor
+ {
+ dc_user = 0,
+ dc_none,
+ dc_arrow,
+ dc_ibeam,
+ dc_hourglass,
+ dc_waitarrow,
+ dc_crosshair,
+ dc_up,
+ dc_sizenw,
+ dc_sizese,
+ dc_sizene,
+ dc_sizesw,
+ dc_sizew,
+ dc_sizee,
+ dc_sizen,
+ dc_sizes,
+ dc_sizewe,
+ dc_sizens,
+ dc_sizeall,
+ dc_no,
+ dc_hand,
+ dc_blank, // don't show any custom cursor, just use your default
+ dc_middle_pan,
+ dc_north_pan,
+ dc_north_east_pan,
+ dc_east_pan,
+ dc_south_east_pan,
+ dc_south_pan,
+ dc_south_west_pan,
+ dc_west_pan,
+ dc_north_west_pan,
+ dc_alias,
+ dc_cell,
+ dc_colresize,
+ dc_copycur,
+ dc_verticaltext,
+ dc_rowresize,
+ dc_zoomin,
+ dc_zoomout,
+ dc_help,
+ dc_custom,
+
+ dc_last, // custom cursors start from this value and up
+ };
+
+ enum EHTMLKeyModifiers
+ {
+ k_eHTMLKeyModifier_None = 0,
+ k_eHTMLKeyModifier_AltDown = 1 << 0,
+ k_eHTMLKeyModifier_CtrlDown = 1 << 1,
+ k_eHTMLKeyModifier_ShiftDown = 1 << 2,
+ };
+
+ // keyboard interactions, native keycode is the virtual key code value from your OS
+ virtual void KeyDown( HHTMLBrowser unBrowserHandle, uint32 nNativeKeyCode, EHTMLKeyModifiers eHTMLKeyModifiers ) = 0;
+ virtual void KeyUp( HHTMLBrowser unBrowserHandle, uint32 nNativeKeyCode, EHTMLKeyModifiers eHTMLKeyModifiers ) = 0;
+ // cUnicodeChar is the unicode character point for this keypress (and potentially multiple chars per press)
+ virtual void KeyChar( HHTMLBrowser unBrowserHandle, uint32 cUnicodeChar, EHTMLKeyModifiers eHTMLKeyModifiers ) = 0;
+
+ // programmatically scroll this many pixels on the page
+ virtual void SetHorizontalScroll( HHTMLBrowser unBrowserHandle, uint32 nAbsolutePixelScroll ) = 0;
+ virtual void SetVerticalScroll( HHTMLBrowser unBrowserHandle, uint32 nAbsolutePixelScroll ) = 0;
+
+ // tell the html control if it has key focus currently, controls showing the I-beam cursor in text controls amongst other things
+ virtual void SetKeyFocus( HHTMLBrowser unBrowserHandle, bool bHasKeyFocus ) = 0;
+
+ // open the current pages html code in the local editor of choice, used for debugging
+ virtual void ViewSource( HHTMLBrowser unBrowserHandle ) = 0;
+ // copy the currently selected text on the html page to the local clipboard
+ virtual void CopyToClipboard( HHTMLBrowser unBrowserHandle ) = 0;
+ // paste from the local clipboard to the current html page
+ virtual void PasteFromClipboard( HHTMLBrowser unBrowserHandle ) = 0;
+
+ // find this string in the browser, if bCurrentlyInFind is true then instead cycle to the next matching element
+ virtual void Find( HHTMLBrowser unBrowserHandle, const char *pchSearchStr, bool bCurrentlyInFind, bool bReverse ) = 0;
+ // cancel a currently running find
+ virtual void StopFind( HHTMLBrowser unBrowserHandle ) = 0;
+
+ // return details about the link at position x,y on the current page
+ virtual void GetLinkAtPosition( HHTMLBrowser unBrowserHandle, int x, int y ) = 0;
+
+ // set a webcookie for the hostname in question
+ virtual void SetCookie( const char *pchHostname, const char *pchKey, const char *pchValue, const char *pchPath = "/", RTime32 nExpires = 0, bool bSecure = false, bool bHTTPOnly = false ) = 0;
+
+ // Zoom the current page by flZoom ( from 0.0 to 2.0, so to zoom to 120% use 1.2 ), zooming around point X,Y in the page (use 0,0 if you don't care)
+ virtual void SetPageScaleFactor( HHTMLBrowser unBrowserHandle, float flZoom, int nPointX, int nPointY ) = 0;
+
+ // Enable/disable low-resource background mode, where javascript and repaint timers are throttled, resources are
+ // more aggressively purged from memory, and audio/video elements are paused. When background mode is enabled,
+ // all HTML5 video and audio objects will execute ".pause()" and gain the property "._steam_background_paused = 1".
+ // When background mode is disabled, any video or audio objects with that property will resume with ".play()".
+ virtual void SetBackgroundMode( HHTMLBrowser unBrowserHandle, bool bBackgroundMode ) = 0;
+
+ // CALLBACKS
+ //
+ // These set of functions are used as responses to callback requests
+ //
+
+ // You MUST call this in response to a HTML_StartRequest_t callback
+ // Set bAllowed to true to allow this navigation, false to cancel it and stay
+ // on the current page. You can use this feature to limit the valid pages
+ // allowed in your HTML surface.
+ virtual void AllowStartRequest( HHTMLBrowser unBrowserHandle, bool bAllowed ) = 0;
+
+ // You MUST call this in response to a HTML_JSAlert_t or HTML_JSConfirm_t callback
+ // Set bResult to true for the OK option of a confirm, use false otherwise
+ virtual void JSDialogResponse( HHTMLBrowser unBrowserHandle, bool bResult ) = 0;
+
+ // You MUST call this in response to a HTML_FileOpenDialog_t callback
+ virtual void FileLoadDialogResponse( HHTMLBrowser unBrowserHandle, const char **pchSelectedFiles ) = 0;
+};
+
+#define STEAMHTMLSURFACE_INTERFACE_VERSION "STEAMHTMLSURFACE_INTERFACE_VERSION_003"
+
+// callbacks
+#if defined( VALVE_CALLBACK_PACK_SMALL )
+#pragma pack( push, 4 )
+#elif defined( VALVE_CALLBACK_PACK_LARGE )
+#pragma pack( push, 8 )
+#else
+#error isteamclient.h must be included
+#endif
+
+
+//-----------------------------------------------------------------------------
+// Purpose: The browser is ready for use
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_BrowserReady_t, k_iSteamHTMLSurfaceCallbacks + 1 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // this browser is now fully created and ready to navigate to pages
+END_DEFINE_CALLBACK_1()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: the browser has a pending paint
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK(HTML_NeedsPaint_t, k_iSteamHTMLSurfaceCallbacks + 2)
+CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the browser that needs the paint
+CALLBACK_MEMBER(1, const char *, pBGRA ) // a pointer to the B8G8R8A8 data for this surface, valid until SteamAPI_RunCallbacks is next called
+CALLBACK_MEMBER(2, uint32, unWide) // the total width of the pBGRA texture
+CALLBACK_MEMBER(3, uint32, unTall) // the total height of the pBGRA texture
+CALLBACK_MEMBER(4, uint32, unUpdateX) // the offset in X for the damage rect for this update
+CALLBACK_MEMBER(5, uint32, unUpdateY) // the offset in Y for the damage rect for this update
+CALLBACK_MEMBER(6, uint32, unUpdateWide) // the width of the damage rect for this update
+CALLBACK_MEMBER(7, uint32, unUpdateTall) // the height of the damage rect for this update
+CALLBACK_MEMBER(8, uint32, unScrollX) // the page scroll the browser was at when this texture was rendered
+CALLBACK_MEMBER(9, uint32, unScrollY) // the page scroll the browser was at when this texture was rendered
+CALLBACK_MEMBER(10, float, flPageScale) // the page scale factor on this page when rendered
+CALLBACK_MEMBER(11, uint32, unPageSerial) // incremented on each new page load, you can use this to reject draws while navigating to new pages
+END_DEFINE_CALLBACK_12()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: The browser wanted to navigate to a new page
+// NOTE - you MUST call AllowStartRequest in response to this callback
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK(HTML_StartRequest_t, k_iSteamHTMLSurfaceCallbacks + 3)
+CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface navigating
+CALLBACK_MEMBER(1, const char *, pchURL) // the url they wish to navigate to
+CALLBACK_MEMBER(2, const char *, pchTarget) // the html link target type (i.e _blank, _self, _parent, _top )
+CALLBACK_MEMBER(3, const char *, pchPostData ) // any posted data for the request
+CALLBACK_MEMBER(4, bool, bIsRedirect) // true if this was a http/html redirect from the last load request
+END_DEFINE_CALLBACK_5()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: The browser has been requested to close due to user interaction (usually from a javascript window.close() call)
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK(HTML_CloseBrowser_t, k_iSteamHTMLSurfaceCallbacks + 4)
+CALLBACK_MEMBER(0, HHTMLBrowser, unBrowserHandle) // the handle of the surface
+END_DEFINE_CALLBACK_1()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: the browser is navigating to a new url
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_URLChanged_t, k_iSteamHTMLSurfaceCallbacks + 5 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface navigating
+CALLBACK_MEMBER( 1, const char *, pchURL ) // the url they wish to navigate to
+CALLBACK_MEMBER( 2, const char *, pchPostData ) // any posted data for the request
+CALLBACK_MEMBER( 3, bool, bIsRedirect ) // true if this was a http/html redirect from the last load request
+CALLBACK_MEMBER( 4, const char *, pchPageTitle ) // the title of the page
+CALLBACK_MEMBER( 5, bool, bNewNavigation ) // true if this was from a fresh tab and not a click on an existing page
+END_DEFINE_CALLBACK_6()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: A page is finished loading
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_FinishedRequest_t, k_iSteamHTMLSurfaceCallbacks + 6 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, const char *, pchURL ) //
+CALLBACK_MEMBER( 2, const char *, pchPageTitle ) //
+END_DEFINE_CALLBACK_3()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: a request to load this url in a new tab
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_OpenLinkInNewTab_t, k_iSteamHTMLSurfaceCallbacks + 7 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, const char *, pchURL ) //
+END_DEFINE_CALLBACK_2()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: the page has a new title now
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_ChangedTitle_t, k_iSteamHTMLSurfaceCallbacks + 8 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, const char *, pchTitle ) //
+END_DEFINE_CALLBACK_2()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: results from a search
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_SearchResults_t, k_iSteamHTMLSurfaceCallbacks + 9 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, uint32, unResults ) //
+CALLBACK_MEMBER( 2, uint32, unCurrentMatch ) //
+END_DEFINE_CALLBACK_3()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: page history status changed on the ability to go backwards and forward
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_CanGoBackAndForward_t, k_iSteamHTMLSurfaceCallbacks + 10 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, bool, bCanGoBack ) //
+CALLBACK_MEMBER( 2, bool, bCanGoForward ) //
+END_DEFINE_CALLBACK_3()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: details on the visibility and size of the horizontal scrollbar
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_HorizontalScroll_t, k_iSteamHTMLSurfaceCallbacks + 11 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, uint32, unScrollMax ) //
+CALLBACK_MEMBER( 2, uint32, unScrollCurrent ) //
+CALLBACK_MEMBER( 3, float, flPageScale ) //
+CALLBACK_MEMBER( 4, bool , bVisible ) //
+CALLBACK_MEMBER( 5, uint32, unPageSize ) //
+END_DEFINE_CALLBACK_6()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: details on the visibility and size of the vertical scrollbar
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_VerticalScroll_t, k_iSteamHTMLSurfaceCallbacks + 12 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, uint32, unScrollMax ) //
+CALLBACK_MEMBER( 2, uint32, unScrollCurrent ) //
+CALLBACK_MEMBER( 3, float, flPageScale ) //
+CALLBACK_MEMBER( 4, bool, bVisible ) //
+CALLBACK_MEMBER( 5, uint32, unPageSize ) //
+END_DEFINE_CALLBACK_6()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: response to GetLinkAtPosition call
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_LinkAtPosition_t, k_iSteamHTMLSurfaceCallbacks + 13 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, uint32, x ) // NOTE - Not currently set
+CALLBACK_MEMBER( 2, uint32, y ) // NOTE - Not currently set
+CALLBACK_MEMBER( 3, const char *, pchURL ) //
+CALLBACK_MEMBER( 4, bool, bInput ) //
+CALLBACK_MEMBER( 5, bool, bLiveLink ) //
+END_DEFINE_CALLBACK_6()
+
+
+
+//-----------------------------------------------------------------------------
+// Purpose: show a Javascript alert dialog, call JSDialogResponse
+// when the user dismisses this dialog (or right away to ignore it)
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_JSAlert_t, k_iSteamHTMLSurfaceCallbacks + 14 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, const char *, pchMessage ) //
+END_DEFINE_CALLBACK_2()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: show a Javascript confirmation dialog, call JSDialogResponse
+// when the user dismisses this dialog (or right away to ignore it)
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_JSConfirm_t, k_iSteamHTMLSurfaceCallbacks + 15 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, const char *, pchMessage ) //
+END_DEFINE_CALLBACK_2()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: when received show a file open dialog
+// then call FileLoadDialogResponse with the file(s) the user selected.
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_FileOpenDialog_t, k_iSteamHTMLSurfaceCallbacks + 16 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, const char *, pchTitle ) //
+CALLBACK_MEMBER( 2, const char *, pchInitialFile ) //
+END_DEFINE_CALLBACK_3()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: a new html window has been created
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_NewWindow_t, k_iSteamHTMLSurfaceCallbacks + 21 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the current surface
+CALLBACK_MEMBER( 1, const char *, pchURL ) // the page to load
+CALLBACK_MEMBER( 2, uint32, unX ) // the x pos into the page to display the popup
+CALLBACK_MEMBER( 3, uint32, unY ) // the y pos into the page to display the popup
+CALLBACK_MEMBER( 4, uint32, unWide ) // the total width of the pBGRA texture
+CALLBACK_MEMBER( 5, uint32, unTall ) // the total height of the pBGRA texture
+CALLBACK_MEMBER( 6, HHTMLBrowser, unNewWindow_BrowserHandle ) // the handle of the new window surface
+END_DEFINE_CALLBACK_7()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: change the cursor to display
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_SetCursor_t, k_iSteamHTMLSurfaceCallbacks + 22 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, uint32, eMouseCursor ) // the EMouseCursor to display
+END_DEFINE_CALLBACK_2()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: informational message from the browser
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_StatusText_t, k_iSteamHTMLSurfaceCallbacks + 23 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, const char *, pchMsg ) // the EMouseCursor to display
+END_DEFINE_CALLBACK_2()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: show a tooltip
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_ShowToolTip_t, k_iSteamHTMLSurfaceCallbacks + 24 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, const char *, pchMsg ) // the EMouseCursor to display
+END_DEFINE_CALLBACK_2()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: update the text of an existing tooltip
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_UpdateToolTip_t, k_iSteamHTMLSurfaceCallbacks + 25 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+CALLBACK_MEMBER( 1, const char *, pchMsg ) // the EMouseCursor to display
+END_DEFINE_CALLBACK_2()
+
+
+//-----------------------------------------------------------------------------
+// Purpose: hide the tooltip you are showing
+//-----------------------------------------------------------------------------
+DEFINE_CALLBACK( HTML_HideToolTip_t, k_iSteamHTMLSurfaceCallbacks + 26 )
+CALLBACK_MEMBER( 0, HHTMLBrowser, unBrowserHandle ) // the handle of the surface
+END_DEFINE_CALLBACK_1()
+
+
+#pragma pack( pop )
+
+
+#endif // ISTEAMHTMLSURFACE_H