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