00001 // 00002 // begin license header 00003 // 00004 // This file is part of Terk and TerkOS. 00005 // 00006 // All Terk and TerkOS source code is provided under the terms of the 00007 // GNU General Public License v2 (http://www.gnu.org/licenses/gpl-2.0.html). 00008 // Those wishing to use Terk and TerkOS source code, software and/or 00009 // technologies under different licensing terms should contact us at 00010 // [email protected]. Such licensing terms are available for 00011 // all portions of the Terk and TerkOS codebase presented here. 00012 // 00013 // end license header 00014 // 00015 00016 #ifndef _PROPERTY_H 00017 #define _PROPERTY_H 00018 00019 // result codes 00020 #define PROP_OK 0 // returned when set or get is successful 00021 #define PROP_ERROR -1 00022 #define PROP_ERROR_NOT_SUPPORTED -2 // property id not supported 00023 #define PROP_ERROR_READ_ONLY -3 // property is read only 00024 #define PROP_ERROR_ILLEGAL_VALUE -4 // property value is out 00025 // of range or illegal 00026 00027 // Globally unique property ID's are useful because we can merge all 00028 // property interfaces into one..... 00029 // The 0th object is reserved 00030 // 64K of properties should be plenty for each object 00031 #define PROP_MULTIPLIER 0x10000 00032 #define PROP_ID(object, index) ((object+1)*PROP_MULTIPLIER + index) 00033 00034 // string related stuff-- some properties can be returned as null- 00035 // terminated strings-- commented out for now, food for thought.... 00036 //#define PROP_STRING 0xc000 00037 //#define PROP_IS_STRING(id) (id & PROP_STRING) 00038 //#define PROP_STRING_ID(object, index) ((object+1)*PROP_MULTIPLIER + PROP_STRING + index) 00039 00044 class IProperty 00045 { 00046 public: 00057 virtual int GetProperty(int property, long *value) = 0; 00058 00070 virtual int SetProperty(int property, long value) = 0; 00071 }; 00072 00073 #endif
1.7.1