Qt 6.x
The Qt SDK
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qwindowsgdinativeinterface.cpp
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1// Copyright (C) 2016 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
6
7#include <QtGui/qbackingstore.h>
8
10
12{
13 if (!bs || !bs->handle()) {
14 qWarning("%s: '%s' requested for null backingstore or backingstore without handle.", __FUNCTION__, resource.constData());
15 return nullptr;
16 }
17 auto *wbs = static_cast<QWindowsBackingStore *>(bs->handle());
18 if (resource == "getDC")
19 return wbs->getDC();
20 qWarning("%s: Invalid key '%s' requested.", __FUNCTION__, resource.constData());
21 return nullptr;
22}
23
The QBackingStore class provides a drawing area for QWindow.
QPlatformBackingStore * handle() const
Returns a pointer to the QPlatformBackingStore implementation.
\inmodule QtCore
Definition qbytearray.h:57
const char * constData() const noexcept
Returns a pointer to the const data stored in the byte array.
Definition qbytearray.h:122
Backing store for windows.
void * nativeResourceForBackingStore(const QByteArray &resource, QBackingStore *bs) override
Combined button and popup list for selecting options.
#define qWarning
Definition qlogging.h:162