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COM: Throw in constructors and operators

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Signed-off-by: Simon Rozman <simon@rozman.si>
This commit is contained in:
Simon Rozman 2023-03-06 16:04:24 +01:00
parent 12046216e9
commit fc0060d3bd
1 changed files with 19 additions and 10 deletions
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29
include/WinStd/COM.h
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@ -93,7 +93,9 @@ namespace winstd
com_obj(_In_ _Other *other)
{
assert(other);
other->QueryInterface(__uuidof(T), (void**)&m_h);
HRESULT hr = other->QueryInterface(__uuidof(T), (void**)&m_h);
if (FAILED(hr))
throw com_runtime_error(hr, "QueryInterface failed");
}
///
@ -104,7 +106,9 @@ namespace winstd
template <class _Other>
com_obj(_In_ com_obj<_Other> &other)
{
other->QueryInterface(__uuidof(T), (void**)&m_h);
HRESULT hr = other->QueryInterface(__uuidof(T), (void**)&m_h);
if (FAILED(hr))
throw com_runtime_error(hr, "QueryInterface failed");
}
///
@ -183,26 +187,32 @@ namespace winstd
///
/// Constructs BSTR from OLE string
///
bstr(_In_ LPCOLESTR src) noexcept
bstr(_In_ LPCOLESTR src)
{
m_h = SysAllocString(src);
if (!m_h)
throw std::bad_alloc();
}
///
/// Constructs BSTR from OLE string with length
///
bstr(_In_ LPCOLESTR src, _In_ UINT len) noexcept
bstr(_In_ LPCOLESTR src, _In_ UINT len)
{
m_h = SysAllocStringLen(src, len);
if (!m_h)
throw std::bad_alloc();
}
///
/// Constructs BSTR from std::basic_string
///
template<class _Traits, class _Ax>
bstr(_In_ const std::basic_string<wchar_t, _Traits, _Ax> &src) noexcept
bstr(_In_ const std::basic_string<wchar_t, _Traits, _Ax> &src)
{
m_h = SysAllocStringLen(src.c_str(), (UINT)src.length());
if (!m_h)
throw std::bad_alloc();
}
///
@ -880,7 +890,7 @@ namespace winstd
///
/// Copy from SAFEARRAY
///
variant& operator=(_In_ const SAFEARRAY *pSrc) noexcept
variant& operator=(_In_ const SAFEARRAY *pSrc)
{
assert(pSrc != NULL);
VariantClear(this);
@ -891,10 +901,9 @@ namespace winstd
SafeArrayGetVartype(const_cast<LPSAFEARRAY>(pSrc), &vt);
vt |= VT_ARRAY;
parray = pCopy;
} else
assert(0);
return *this;
return *this;
}
throw com_runtime_error(hr, "SafeArrayCopy failed");
}
public: