手动转换: 您可以自己编写转换函数或使用std::to_string()将std::string转换为另一种可被QVariant接受的数据类型,例如QString。然后将转换后的数据类型传递给QVariant。 使用QString: Qt框架提供了QString类来处理字符串,它与std::string有着相似的功能。您可以直接使用QString来替代std::string,这样就可以...
; 2、QString转std::string QString qstr = "hello wrold!"; std::string str = qstr.toStd...
I'm having a hard time of converting std::string to QVariant and QVariant back to std::string. In both cases I end up with empty value (default QVariant, just like it was initialized with no parameters) and empty std::string (""). These are relevant parts of my code: boolTe...
6 Qt error: 'const class QString' has no member named 'toStdString' 0 QString to char not working 6 Converting QString to std::string 1 How to use QVariant::fromValue with QString? 1 std::string not accessible after converting from QString Hot Network Questions Does the Ghost ...
(QString, QString)", params); VARIANT var; QString strCode = jScript; QString stringLang("JScript"); BSTR bstrCode = SysAllocString(strCode.toStdWString().c_str()); BSTR bstrLang = SysAllocString(stringLang.toStdWString().c_str()); window->execScript(bstrCode, bstrLang, &var...
QByteArray received = serial.readAll();if(received.toStdString().compare(COMMANDE_RECEIVED) !=0) {emiterror("Not wanted response"); } }else{ emit timeout(tr("Wait read response timeout %1").arg(QTime::currentTime().toString())); ...
"); if ( allow ) { vector<unsigned char> dbEncryptedPassword (encryptedPassword.begin(), encryptedPassword.end()); ApplicationPassword appPass(&connectedApp, username.toStdString(), dbEncryptedPassword); int passwordId = db->persist(appPass); sock->write(QVariant(passwordId).toByte...
boolColumnEditorModel::setData(QModelIndexconst&oIndex, QVariantconst&oValue,intnRole) {if(!oIndex.isValid())returnQStandardItemModel::setData(oIndex, oValue, nRole); StdString s = oValue.value<StdString>();boolrc;boolupdate =true;intn = rowCount()-1;intir = oIndex.row();intic = o...
在Qt中,可以使用特殊字符将std::string转换为QString。Qt提供了一个非常方便的方法来实现这个转换,即使用fromStdString函数。 下面是完善且全面的答案: 将std::string转换为QString的步骤如下: 首先,确保在代码中包含以下头文件: 代码语言:txt 复制 #include <QString> #include <string> 然后,使用from...
使用特殊字符将Qt std::string转换为QString 如何将QMap <QString,QMap <QString,int >>转换为QVariant? 如何将QString转换为std :: string? 如何将std :: string转换为const char*? 如何将std :: string转换为int? 如何将std::string转换为不同的string类? 如何将System :: String ^转换为std :: st...