const QObject *receiver, void **slot, QtPrivate::QSlotObjectBase *slotObj, Qt::ConnectionType type, const int *types, const QMetaObject *senderMetaObject){if (!signal) {qWarning("QObject::connect: invalid nullptr parameter");if (slotObj)slotObj->destroyIfLastRef();return QMetaObject::Conn...
: "Unknown"; qWarning("QObject::connect(%s, %s): invalid nullptr parameter", senderString, receiverString); if (slotObj) slotObj->destroyIfLastRef(); return QMetaObject::Connection(); }//同QT4 QObject *s = const_cast<QObject *>(sender); QObject *r = const_cast<QObject *>(receive...
signal) { qWarning("QObject::connect: invalid nullptr parameter"); if (slotObj) slotObj->destroyIfLastRef(); return QMetaObject::Connection(); } int signal_index = -1; void *args[] = { &signal_index, signal }; // 根据调用来判断是否存在信号,如果当前类没有就去父类中寻找 // 直到...
{if(!signal) { qCWarning(lcConnect,"QObject::connect: invalid nullptr parameter");if(slotObj) slotObj->destroyIfLastRef();returnQMetaObject::Connection(); }intsignal_index = -1;void*args[] = { &signal_index, signal };for(; senderMetaObject && signal_index <0; senderMetaObject = sende...
ghost changed the title Cannot Compile: invalid conversion from ‘char**’ to ‘const char**’ Cannot Compile: ‘Q_NULLPTR’ was not declared in this scope*’ Jan 20, 2017 Collaborator tarmoj commented Jan 20, 2017 via email Thanks for the report, probably needs some condition for Qt ...
"; } else { qDebug()<<"连接失败:错误信息为:"<<dwResult; if(dwResult==ERROR_INVALID_PARAMETER) { qDebug()<<"连接失败:错误信息为:ERROR_INVALID_PARAMETER"; } else if(dwResult==ERROR_INVALID_HANDLE) { qDebug()<<"连接失败:错误信息为:ERROR_INVALID_HANDLE"; } else if(dwResult==ERROR...
Enums.ErrorTypeCommonNullPtr (1) null pointer. Enums.ErrorTypeCommonInvalidArgument (2) Invalid argument. Enums.ErrorTypeCommonNotImplemented (3) Not implemented. Enums.ErrorTypeCommonOutOfRange (4) Out of range. Enums.ErrorTypeCommonInvalidAccess (5) Invalid access. Enums.ErrorTypeCommonIllegal...
ReturnsAcceptableifinputis matched by the regular expression for this validator,Intermediateif it has matched partially (i.e. could be a valid match if additional valid characters are added), andInvalidifinputis not matched. In case theinputis not matched, theposparameter is set to the length ...
{ Q_OBJECTpublic:MainWindow(QWidget *parent =nullptr); ~MainWindow();voidgeneratePdf();privateslots:voidonLoadFinished(bool);private: Ui::MainWindow *ui; QWebEngineView *view;voidcreateHtmlFile(); };#endif// MAINWINDOW_H MainWindow.cpp ...
TheresultCallbackmust take aQWebEngineFindTextResultparameter. Warning:We guarantee that the callback (resultCallback) is always called, but it might be done during page destruction. WhenQWebEnginePageis deleted, the callback is triggered with an invalid value and it is not safe to use the ...