1 // Windows/PropVariant.h 2 3 #ifndef __WINDOWS_PROP_VARIANT_H 4 #define __WINDOWS_PROP_VARIANT_H 5 6 #include "../Common/MyTypes.h" 7 #include "../Common/MyWindows.h" 8 9 namespace NWindows { 10 namespace NCOM { 11 12 HRESULT PropVariant_Clear(PROPVARIANT *p) throw(); 13 14 HRESULT PropVarEm_Alloc_Bstr(PROPVARIANT *p, unsigned numChars) throw(); 15 HRESULT PropVarEm_Set_Str(PROPVARIANT *p, const char *s) throw(); 16 17 inline void PropVarEm_Set_UInt32(PROPVARIANT *p, UInt32 v) throw() 18 { 19 p->vt = VT_UI4; 20 p->ulVal = v; 21 } 22 23 inline void PropVarEm_Set_UInt64(PROPVARIANT *p, UInt64 v) throw() 24 { 25 p->vt = VT_UI8; 26 p->uhVal.QuadPart = v; 27 } 28 29 inline void PropVarEm_Set_FileTime64(PROPVARIANT *p, UInt64 v) throw() 30 { 31 p->vt = VT_FILETIME; 32 p->filetime.dwLowDateTime = (DWORD)v; 33 p->filetime.dwHighDateTime = (DWORD)(v >> 32); 34 } 35 36 inline void PropVarEm_Set_Bool(PROPVARIANT *p, bool b) throw() 37 { 38 p->vt = VT_BOOL; 39 p->boolVal = (b ? VARIANT_TRUE : VARIANT_FALSE); 40 } 41 42 43 class CPropVariant : public tagPROPVARIANT 44 { 45 public: 46 CPropVariant() 47 { 48 vt = VT_EMPTY; 49 wReserved1 = 0; 50 // wReserved2 = 0; 51 // wReserved3 = 0; 52 // uhVal.QuadPart = 0; 53 bstrVal = 0; 54 } 55 ~CPropVariant() throw() { Clear(); } 56 CPropVariant(const PROPVARIANT &varSrc); 57 CPropVariant(const CPropVariant &varSrc); 58 CPropVariant(BSTR bstrSrc); 59 CPropVariant(LPCOLESTR lpszSrc); 60 CPropVariant(bool bSrc) { vt = VT_BOOL; wReserved1 = 0; boolVal = (bSrc ? VARIANT_TRUE : VARIANT_FALSE); }; 61 CPropVariant(Byte value) { vt = VT_UI1; wReserved1 = 0; bVal = value; } 62 63 private: 64 CPropVariant(Int16 value); // { vt = VT_I2; wReserved1 = 0; iVal = value; } 65 CPropVariant(Int32 value); // { vt = VT_I4; wReserved1 = 0; lVal = value; } 66 67 public: 68 CPropVariant(UInt32 value) { vt = VT_UI4; wReserved1 = 0; ulVal = value; } 69 CPropVariant(UInt64 value) { vt = VT_UI8; wReserved1 = 0; uhVal.QuadPart = value; } 70 CPropVariant(Int64 value) { vt = VT_I8; wReserved1 = 0; hVal.QuadPart = value; } 71 CPropVariant(const FILETIME &value) { vt = VT_FILETIME; wReserved1 = 0; filetime = value; } 72 73 CPropVariant& operator=(const CPropVariant &varSrc); 74 CPropVariant& operator=(const PROPVARIANT &varSrc); 75 CPropVariant& operator=(BSTR bstrSrc); 76 CPropVariant& operator=(LPCOLESTR lpszSrc); 77 CPropVariant& operator=(const char *s); 78 79 CPropVariant& operator=(bool bSrc) throw(); 80 CPropVariant& operator=(Byte value) throw(); 81 82 private: 83 CPropVariant& operator=(Int16 value) throw(); 84 85 public: 86 CPropVariant& operator=(Int32 value) throw(); 87 CPropVariant& operator=(UInt32 value) throw(); 88 CPropVariant& operator=(UInt64 value) throw(); 89 CPropVariant& operator=(Int64 value) throw(); 90 CPropVariant& operator=(const FILETIME &value) throw(); 91 92 BSTR AllocBstr(unsigned numChars); 93 94 HRESULT Clear() throw(); 95 HRESULT Copy(const PROPVARIANT *pSrc) throw(); 96 HRESULT Attach(PROPVARIANT *pSrc) throw(); 97 HRESULT Detach(PROPVARIANT *pDest) throw(); 98 99 HRESULT InternalClear() throw(); 100 void InternalCopy(const PROPVARIANT *pSrc); 101 102 int Compare(const CPropVariant &a) throw(); 103 }; 104 105 }} 106 107 #endif 108