本文整理汇总了C++中QByteArray::data_ptr方法的典型用法代码示例。如果您正苦于以下问题：C++ QByteArray::data_ptr方法的具体用法？C++ QByteArray::data_ptr怎么用？C++ QByteArray::data_ptr使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类QByteArray的用法示例。
在下文中一共展示了QByteArray::data_ptr方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: readFromStreamLX
void readFromStreamLX(QMimeData* aData,RReadStream& aStream)
{
// This function both leaves and throws exceptions. There must be no destructor
// dependencies between cleanup styles, and no cleanup stack dependencies on stacked objects.
TCardinality mimeTypeCount;
aStream >> mimeTypeCount;
for (int i = 0; i< mimeTypeCount;i++)
{
// mime type
TCardinality mimeTypeSize;
aStream >> mimeTypeSize;
HBufC* mimeTypeBuf = HBufC::NewLC(aStream,mimeTypeSize);
QString mimeType = QString::fromUtf16(mimeTypeBuf->Des().Ptr(),mimeTypeBuf->Length());
CleanupStack::PopAndDestroy(mimeTypeBuf);
// mime data
TCardinality dataSize;
aStream >> dataSize;
QByteArray ba;
ba.reserve(dataSize);
aStream.ReadL(reinterpret_cast<uchar*>(ba.data_ptr()->data),dataSize);
ba.data_ptr()->size = dataSize;
qDebug() << "paste from clipboard mime: " << mimeType << " data: " << ba;
aData->setData(mimeType,ba);
}
}示例2: test_setFromRawData
void test_setFromRawData()
{
char rawData[] = "hello world!";
QByteArray ba;
QByteArray::DataPtr oldDataPtr = ba.data_ptr();
ba.setRawData(rawData, 5);
QVERIFY(oldDataPtr != ba.data_ptr());
oldDataPtr = ba.data_ptr();
ba.setRawData(rawData + 6, 5);
// Start using QByteArray::setRawData directly if the following QVERIFY fails.
// This would mean that the QByteArray::setRawData behavior has been changed to the
// desired one where switching from one raw data to another does not cause a
// QByteArray data block reallocation. Qt5 maybe?
QVERIFY(oldDataPtr != ba.data_ptr());
// Go ahead and do tests on our replacement setFromRawData.
ba = QByteArray();
oldDataPtr = ba.data_ptr();
QVERIFY(ba.data_ptr()->ref > 1); // Should be the multi-referenced shared null.
Pillow::ByteArrayHelpers::setFromRawData(ba, rawData, 0, 5);
QVERIFY(ba.data_ptr() != oldDataPtr);
QVERIFY(ba.data_ptr()->ref == 1);
QVERIFY(rawData[5] != '\0');
QCOMPARE(ba, QByteArray("hello"));
// Calling out setFromRawData on a string that is already detached should not reallocate the
// QByteArray data block, as opposed to QByteArray::setRawData.
oldDataPtr = ba.data_ptr();
Pillow::ByteArrayHelpers::setFromRawData(ba, rawData, 6, 5);
QVERIFY(ba.data_ptr() == oldDataPtr);
QVERIFY(ba.data_ptr()->ref == 1);
QVERIFY(rawData[11] != '\0');
QCOMPARE(ba, QByteArray("world"));
}