63 lines
1.2 KiB
C++
63 lines
1.2 KiB
C++
//
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// The definitions of functions and data declared in comutil.h
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//
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#include <comdef.h>
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#pragma hdrstop
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#include <malloc.h>
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#pragma warning(disable:4290)
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_variant_t vtMissing(DISP_E_PARAMNOTFOUND, VT_ERROR);
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namespace _com_util {
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//
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// Convert char * to BSTR
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//
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BSTR __stdcall ConvertStringToBSTR(const char* pSrc) throw(_com_error)
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{
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if (pSrc == NULL) {
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return NULL;
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}
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else {
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int size = lstrlenA(pSrc) + 1;
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BSTR pDest = static_cast<BSTR>(::_alloca(size * sizeof(wchar_t)));
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pDest[0] = '\0';
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if (::MultiByteToWideChar(CP_ACP, 0, pSrc, -1, pDest, size) == 0) {
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_com_issue_error(HRESULT_FROM_WIN32(GetLastError()));
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}
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return ::SysAllocString(pDest);
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}
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}
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// Convert BSTR to char *
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//
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char* __stdcall ConvertBSTRToString(BSTR pSrc) throw(_com_error)
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{
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if (pSrc == NULL) {
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return NULL;
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}
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else {
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int size = (wcslen(pSrc) + 1) * sizeof(wchar_t);
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char* pDest = ::new char[size];
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if (pDest == NULL) {
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_com_issue_error(E_OUTOFMEMORY);
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}
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pDest[0] = '\0';
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if (::WideCharToMultiByte(CP_ACP, 0, pSrc, -1, pDest, size, NULL, NULL) == 0) {
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_com_issue_error(HRESULT_FROM_WIN32(GetLastError()));
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}
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return pDest;
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}
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}
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}
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