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PropVariant.h (3409B)

      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 #include "../Common/MyString.h"
      9 
     10 namespace NWindows {
     11 namespace NCOM {
     12 
     13 BSTR AllocBstrFromAscii(const char *s) throw();
     14 
     15 HRESULT PropVariant_Clear(PROPVARIANT *p) throw();
     16 
     17 HRESULT PropVarEm_Alloc_Bstr(PROPVARIANT *p, unsigned numChars) throw();
     18 HRESULT PropVarEm_Set_Str(PROPVARIANT *p, const char *s) throw();
     19 
     20 inline void PropVarEm_Set_UInt32(PROPVARIANT *p, UInt32 v) throw()
     21 {
     22  p->vt = VT_UI4;
     23  p->ulVal = v;
     24 }
     25 
     26 inline void PropVarEm_Set_UInt64(PROPVARIANT *p, UInt64 v) throw()
     27 {
     28  p->vt = VT_UI8;
     29  p->uhVal.QuadPart = v;
     30 }
     31 
     32 inline void PropVarEm_Set_FileTime64(PROPVARIANT *p, UInt64 v) throw()
     33 {
     34  p->vt = VT_FILETIME;
     35  p->filetime.dwLowDateTime = (DWORD)v;
     36  p->filetime.dwHighDateTime = (DWORD)(v >> 32);
     37 }
     38 
     39 inline void PropVarEm_Set_Bool(PROPVARIANT *p, bool b) throw()
     40 {
     41  p->vt = VT_BOOL;
     42  p->boolVal = (b ? VARIANT_TRUE : VARIANT_FALSE);
     43 }
     44 
     45 
     46 class CPropVariant : public tagPROPVARIANT
     47 {
     48 public:
     49  CPropVariant()
     50  {
     51    vt = VT_EMPTY;
     52    wReserved1 = 0;
     53    // wReserved2 = 0;
     54    // wReserved3 = 0;
     55    // uhVal.QuadPart = 0;
     56    bstrVal = 0;
     57  }
     58  ~CPropVariant() throw() { Clear(); }
     59  CPropVariant(const PROPVARIANT &varSrc);
     60  CPropVariant(const CPropVariant &varSrc);
     61  CPropVariant(BSTR bstrSrc);
     62  CPropVariant(LPCOLESTR lpszSrc);
     63  CPropVariant(bool bSrc) { vt = VT_BOOL; wReserved1 = 0; boolVal = (bSrc ? VARIANT_TRUE : VARIANT_FALSE); }
     64  CPropVariant(Byte value) { vt = VT_UI1; wReserved1 = 0; bVal = value; }
     65 
     66 private:
     67  CPropVariant(Int16 value); // { vt = VT_I2; wReserved1 = 0; iVal = value; }
     68  CPropVariant(Int32 value); // { vt = VT_I4; wReserved1 = 0; lVal = value; }
     69 
     70 public:
     71  CPropVariant(UInt32 value) { vt = VT_UI4; wReserved1 = 0; ulVal = value; }
     72  CPropVariant(UInt64 value) { vt = VT_UI8; wReserved1 = 0; uhVal.QuadPart = value; }
     73  CPropVariant(Int64 value) { vt = VT_I8; wReserved1 = 0; hVal.QuadPart = value; }
     74  CPropVariant(const FILETIME &value) { vt = VT_FILETIME; wReserved1 = 0; filetime = value; }
     75 
     76  CPropVariant& operator=(const CPropVariant &varSrc);
     77  CPropVariant& operator=(const PROPVARIANT &varSrc);
     78  CPropVariant& operator=(BSTR bstrSrc);
     79  CPropVariant& operator=(LPCOLESTR lpszSrc);
     80  CPropVariant& operator=(const UString &s);
     81  CPropVariant& operator=(const UString2 &s);
     82  CPropVariant& operator=(const char *s);
     83  CPropVariant& operator=(const AString &s)
     84    { return (*this)=(const char *)s; }
     85  
     86  CPropVariant& operator=(bool bSrc) throw();
     87  CPropVariant& operator=(Byte value) throw();
     88  
     89 private:
     90  CPropVariant& operator=(Int16 value) throw();
     91 
     92 public:
     93  CPropVariant& operator=(Int32 value) throw();
     94  CPropVariant& operator=(UInt32 value) throw();
     95  CPropVariant& operator=(UInt64 value) throw();
     96  CPropVariant& operator=(Int64 value) throw();
     97  CPropVariant& operator=(const FILETIME &value) throw();
     98 
     99  BSTR AllocBstr(unsigned numChars);
    100 
    101  HRESULT Clear() throw();
    102  HRESULT Copy(const PROPVARIANT *pSrc) throw();
    103  HRESULT Attach(PROPVARIANT *pSrc) throw();
    104  HRESULT Detach(PROPVARIANT *pDest) throw();
    105 
    106  HRESULT InternalClear() throw();
    107  void InternalCopy(const PROPVARIANT *pSrc);
    108 
    109  int Compare(const CPropVariant &a) throw();
    110 };
    111 
    112 }}
    113 
    114 #endif