Initial commit.

dll/steam_apps.h

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+#include "base.h"
+
+class Steam_Apps : public ISteamApps
+{
+    Settings *settings;
+    class SteamCallResults *callback_results;
+
+public:
+    Steam_Apps(Settings *settings, class SteamCallResults *callback_results);
+
+	bool BIsSubscribed();
+	bool BIsLowViolence();
+	bool BIsCybercafe();
+	bool BIsVACBanned();
+	const char *GetCurrentGameLanguage();
+	const char *GetAvailableGameLanguages();
+
+	// only use this member if you need to check ownership of another game related to yours, a demo for example
+	bool BIsSubscribedApp( AppId_t appID );
+
+	// Takes AppID of DLC and checks if the user owns the DLC & if the DLC is installed
+	bool BIsDlcInstalled( AppId_t appID );
+
+	// returns the Unix time of the purchase of the app
+	uint32 GetEarliestPurchaseUnixTime( AppId_t nAppID );
+
+	// Checks if the user is subscribed to the current app through a free weekend
+	// This function will return false for users who have a retail or other type of license
+	// Before using, please ask your Valve technical contact how to package and secure your free weekened
+	bool BIsSubscribedFromFreeWeekend();
+
+	// Returns the number of DLC pieces for the running app
+	int GetDLCCount();
+
+	// Returns metadata for DLC by index, of range [0, GetDLCCount()]
+	bool BGetDLCDataByIndex( int iDLC, AppId_t *pAppID, bool *pbAvailable, char *pchName, int cchNameBufferSize );
+
+	// Install/Uninstall control for optional DLC
+	void InstallDLC( AppId_t nAppID );
+	void UninstallDLC( AppId_t nAppID );
+	
+	// Request legacy cd-key for yourself or owned DLC. If you are interested in this
+	// data then make sure you provide us with a list of valid keys to be distributed
+	// to users when they purchase the game, before the game ships.
+	// You'll receive an AppProofOfPurchaseKeyResponse_t callback when
+	// the key is available (which may be immediately).
+	void RequestAppProofOfPurchaseKey( AppId_t nAppID );
+
+	bool GetCurrentBetaName( char *pchName, int cchNameBufferSize ); // returns current beta branch name, 'public' is the default branch
+	bool MarkContentCorrupt( bool bMissingFilesOnly ); // signal Steam that game files seems corrupt or missing
+	uint32 GetInstalledDepots( AppId_t appID, DepotId_t *pvecDepots, uint32 cMaxDepots ); // return installed depots in mount order
+
+	// returns current app install folder for AppID, returns folder name length
+	uint32 GetAppInstallDir( AppId_t appID, char *pchFolder, uint32 cchFolderBufferSize );
+	bool BIsAppInstalled( AppId_t appID ); // returns true if that app is installed (not necessarily owned)
+	
+	CSteamID GetAppOwner(); // returns the SteamID of the original owner. If different from current user, it's borrowed
+
+	// Returns the associated launch param if the game is run via steam://run/<appid>//?param1=value1;param2=value2;param3=value3 etc.
+	// Parameter names starting with the character '@' are reserved for internal use and will always return and empty string.
+	// Parameter names starting with an underscore '_' are reserved for steam features -- they can be queried by the game,
+	// but it is advised that you not param names beginning with an underscore for your own features.
+	const char *GetLaunchQueryParam( const char *pchKey );
+
+	// get download progress for optional DLC
+	bool GetDlcDownloadProgress( AppId_t nAppID, uint64 *punBytesDownloaded, uint64 *punBytesTotal ); 
+
+	// return the buildid of this app, may change at any time based on backend updates to the game
+	int GetAppBuildId();
+
+	// Request all proof of purchase keys for the calling appid and asociated DLC.
+	// A series of AppProofOfPurchaseKeyResponse_t callbacks will be sent with
+	// appropriate appid values, ending with a final callback where the m_nAppId
+	// member is k_uAppIdInvalid (zero).
+	void RequestAllProofOfPurchaseKeys();
+
+	STEAM_CALL_RESULT( FileDetailsResult_t )
+	SteamAPICall_t GetFileDetails( const char* pszFileName );
+
+	// Get command line if game was launched via Steam URL, e.g. steam://run/<appid>//<command line>/.
+	// This method of passing a connect string (used when joining via rich presence, accepting an
+	// invite, etc) is preferable to passing the connect string on the operating system command
+	// line, which is a security risk.  In order for rich presence joins to go through this
+	// path and not be placed on the OS command line, you must set a value in your app's
+	// configuration on Steam.  Ask Valve for help with this.
+	//
+	// If game was already running and launched again, the NewUrlLaunchParameters_t will be fired.
+	int GetLaunchCommandLine( char *pszCommandLine, int cubCommandLine );
+
+	// Check if user borrowed this game via Family Sharing, If true, call GetAppOwner() to get the lender SteamID
+	bool BIsSubscribedFromFamilySharing();
+};