ReactOS 0.4.15-dev-8344-g0574987
_com_util Namespace Reference

Functions

BSTR WINAPI ConvertStringToBSTR (const char *pSrc)
 
char *WINAPI ConvertBSTRToString (BSTR pSrc)
 

Function Documentation

◆ ConvertBSTRToString()

char *WINAPI _com_util::ConvertBSTRToString ( BSTR  pSrc)

Definition at line 93 of file comsupp.cpp.

94{
95 DWORD cb, cwch;
96 char *szOut = NULL;
97
98 if (!pSrc) return NULL;
99
100 /* Retrieve the size of the BSTR with the NULL terminator */
101 cwch = ::SysStringLen(pSrc) + 1;
102
103 /* Compute the needed size with the NULL terminator */
104 cb = ::WideCharToMultiByte(CP_ACP, 0, pSrc, cwch, NULL, 0, NULL, NULL);
105 if (cb == 0)
106 {
107 cwch = ::GetLastError();
108 ::_com_issue_error(!IS_ERROR(cwch) ? HRESULT_FROM_WIN32(cwch) : cwch);
109 return NULL;
110 }
111
112 /* Allocate the string */
113 szOut = (char*)::operator new(cb * sizeof(char));
114 if (!szOut)
115 {
117 return NULL;
118 }
119
120 /* Convert the string and NULL-terminate */
121 szOut[cb - 1] = '\0';
122 if (::WideCharToMultiByte(CP_ACP, 0, pSrc, cwch, szOut, cb, NULL, NULL) == 0)
123 {
124 /* We failed, clean everything up */
125 cwch = ::GetLastError();
126
127 ::operator delete(szOut);
128 szOut = NULL;
129
130 ::_com_issue_error(!IS_ERROR(cwch) ? HRESULT_FROM_WIN32(cwch) : cwch);
131 }
132
133 return szOut;
134}
void WINAPI _com_issue_error(HRESULT hr)
Definition: comsupp.cpp:32
#define ERROR_OUTOFMEMORY
Definition: deptool.c:13
#define NULL
Definition: types.h:112
#define CP_ACP
Definition: compat.h:109
#define WideCharToMultiByte
Definition: compat.h:111
unsigned long DWORD
Definition: ntddk_ex.h:95
static HMODULE MODULEINFO DWORD cb
Definition: module.c:33
UINT WINAPI SysStringLen(BSTR str)
Definition: oleaut.c:196
operator
DWORD WINAPI GetLastError(void)
Definition: except.c:1042
#define IS_ERROR(stat)
Definition: winerror.h:74
#define HRESULT_FROM_WIN32(x)
Definition: winerror.h:92

◆ ConvertStringToBSTR()

BSTR WINAPI _com_util::ConvertStringToBSTR ( const char pSrc)

Definition at line 59 of file comsupp.cpp.

60{
61 DWORD cwch;
62 BSTR wsOut(NULL);
63
64 if (!pSrc) return NULL;
65
66 /* Compute the needed size with the NULL terminator */
67 cwch = ::MultiByteToWideChar(CP_ACP, 0, pSrc, -1, NULL, 0);
68 if (cwch == 0) return NULL;
69
70 /* Allocate the BSTR (without the NULL terminator) */
71 wsOut = ::SysAllocStringLen(NULL, cwch - 1);
72 if (!wsOut)
73 {
75 return NULL;
76 }
77
78 /* Convert the string */
79 if (::MultiByteToWideChar(CP_ACP, 0, pSrc, -1, wsOut, cwch) == 0)
80 {
81 /* We failed, clean everything up */
82 cwch = ::GetLastError();
83
84 ::SysFreeString(wsOut);
85 wsOut = NULL;
86
87 ::_com_issue_error(!IS_ERROR(cwch) ? HRESULT_FROM_WIN32(cwch) : cwch);
88 }
89
90 return wsOut;
91}
OLECHAR * BSTR
Definition: compat.h:2293
#define MultiByteToWideChar
Definition: compat.h:110
void WINAPI DECLSPEC_HOTPATCH SysFreeString(BSTR str)
Definition: oleaut.c:271
BSTR WINAPI SysAllocStringLen(const OLECHAR *str, unsigned int len)
Definition: oleaut.c:339