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Windows QPA: Improve warning about SetProcessDpiAwareness() failure

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Silence warning in case DPI awareness was set externally unless
debug is enabled.

Task-number: QTBUG-54416
Change-Id: Id48769e3d4be3047f582e331633905c640930f21
Reviewed-by: Kai Koehne <kai.koehne@qt.io>
This commit is contained in:
Friedemann Kleint 2016-06-29 08:35:58 +02:00
parent be6921e860
commit 596ce989b5
1 changed files with 6 additions and 1 deletions
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7
src/plugins/platforms/windows/qwindowscontext.cpp
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@ -409,7 +409,9 @@ void QWindowsContext::setProcessDpiAwareness(QtWindows::ProcessDpiAwareness dpiA
qCDebug(lcQpaWindows) << __FUNCTION__ << dpiAwareness;
if (QWindowsContext::shcoredll.isValid()) {
const HRESULT hr = QWindowsContext::shcoredll.setProcessDpiAwareness(dpiAwareness);
if (FAILED(hr)) {
// E_ACCESSDENIED means set externally (MSVC manifest or external app loading Qt plugin).
// Silence warning in that case unless debug is enabled.
if (FAILED(hr) && (hr != E_ACCESSDENIED || lcQpaWindows().isDebugEnabled())) {
qWarning().noquote().nospace() << "SetProcessDpiAwareness("
<< dpiAwareness << ") failed: " << QWindowsContext::comErrorString(hr)
<< ", using " << QWindowsContext::processDpiAwareness();
@ -843,6 +845,9 @@ QByteArray QWindowsContext::comErrorString(HRESULT hr)
case E_UNEXPECTED:
result += QByteArrayLiteral("E_UNEXPECTED");
break;
case E_ACCESSDENIED:
result += QByteArrayLiteral("E_ACCESSDENIED");
break;
case CO_E_ALREADYINITIALIZED:
result += QByteArrayLiteral("CO_E_ALREADYINITIALIZED");
break;