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winrt: Add convenience macros for returning from HRESULT calls

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Almost every native call in WinRT uses COM HRESULTS. Provide some
convenience macros for returning after failure.

Task-number: QTBUG-39407
Change-Id: Ia99b0acd771d53c52732f270e46dd6937538e131
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
This commit is contained in:
Andrew Knight 2014-06-06 13:53:58 +03:00
parent 1ae61e95e4
commit 6d95ce1649
1 changed files with 16 additions and 1 deletions
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17
src/corelib/kernel/qfunctions_winrt.h
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@ -1,6 +1,6 @@
/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCore module of the Qt Toolkit.
@ -118,5 +118,20 @@ generate_inline_return_func2(_putenv_s, errno_t, const char *, const char *)
generate_inline_return_func0(tzset, void)
generate_inline_return_func0(_tzset, void)
// Convenience macros for handling HRESULT values
#define RETURN_IF_FAILED(msg, ret) \
if (FAILED(hr)) { \
qErrnoWarning(hr, msg); \
ret; \
}
#define RETURN_HR_IF_FAILED(msg) RETURN_IF_FAILED(msg, return hr)
#define RETURN_OK_IF_FAILED(msg) RETURN_IF_FAILED(msg, return S_OK)
#define RETURN_FALSE_IF_FAILED(msg) RETURN_IF_FAILED(msg, return false)
#define RETURN_VOID_IF_FAILED(msg) RETURN_IF_FAILED(msg, return)
#define Q_ASSERT_SUCCEEDED(hr) \
Q_ASSERT_X(SUCCEEDED(hr), Q_FUNC_INFO, qPrintable(qt_error_string(hr)));
#endif // Q_OS_WINRT
#endif // QFUNCTIONS_WINRT_H