QString s = "www.amin-ahmadi.com"; First convert it tostd::stringand then use itsc_strmethod, like this: s.toStdString().c_str()
This is a sample function how Qt : Convert QString to char datatype :const char *QString2char(QString str) { QByteArray byteArray; const char *cstr; byteArray = str.toUtf8(); cstr = byteArray.constData(); return(cstr); }This is the sample method, how we can use Qt : Convert ...
qt has qstring while std has std::string, to change between them, use following code: // #include <QMessageBox>usingnamespacestd;// #include <fstream>#include<cassert>QStrings2q(std::string&str){autoqs=QString::fromLocal8Bit(QByteArray::fromRawData(str.c_str(),str.size()));return...
ui->exitBtn->setStyleSheet(//正常状态样式"QPushButton{""background-color:#ffffff;"//设置按钮背景色"border-radius:35px;"//设置圆角半径"}""QPushButton:hover{""background-color:#999999;"//设置按钮点击时的背景颜色"}");//下一步ui->pushButton->setStyleSheet(//正常状态样式"QPushButton{""ba...
Qt function calls are anywhere from 2x up to 10x slower than the examples above, depending on what function you use. If you don’t believe me, do the tests yourself. Also undocumented is the speed of some Qt functions. For examples from the QString class, the functions to convert to ...
#include"assistant_1.h"#include"ui_assistant_1.h"Assistant_1::Assistant_1(QWidget*parent):QWidget(parent),ui(new Ui::Assistant_1){ui->setupUi(this);BeaWindow();//窗口优化BeaBtn();//按钮优化}Assistant_1::~Assistant_1(){delete ui;}//点击下一步voidAssistant_1::on_pushButton_clicked...
Crash Report This crash report was reported through the automatic crash reporting system 🤖 Traceback TypeError: unable to convert a Python 'int' object to a C++ 'QString' instance TypeError: unable to convert a Python 'int' object to a C...
hi, when i try to compile the qgroundcontrol3.0.0 source code with qt5.5.1 ctreator, an error appear. Error: C2440: "Initialization": Can not convert from "initializer-list" to "QMap <int, QString>" The constructor for "QMap <int, QStrin...
修改config.h,开启XTOSTRUCT_QT这个宏 当前支持 QString/QMap/QList/QVector xml bson libconfig 如果需要这些功能,需要修改config.h来开启 不支持直接转换vector/map之类的,需要放结构体里面 由于xml/libconfig不支持用纯数字作为key,所以如果需要用map<int, xxx>,那么key需要用x+数字的方式,比如x100 ...
https://stackoverflow.com/questions/42743141/no-member-named-setresizemode-in-qheaderview-convert-qt-4-7-to-qt-5-8 7down voteaccepted I guess you need to replace two obsolete lines: table->verticalHeader()->setResizeMode(QHeaderView::ResizeToContents);table->horizontalHeader()->setResizeMode(QHea...