关闭MessageBox后,焦点自身不会返回到窗口。我试过了:
QMessageBox msgBox;
msgBox.setText("Ok");
msgBox.exec();
this->setFocus();
如何将焦点返回主窗口(this
)?
//dialog.h
#ifndef DIALOG_H
#define DIALOG_H
#include <QDialog>
namespace Ui {
class Dialog;
}
class Dialog : public QDialog
{
Q_OBJECT
public:
explicit Dialog(QWidget *parent = 0);
void loadFile();
~Dialog();
private slots:
void on_buttonLoad2_clicked();
private:
Ui::Dialog *ui;
};
#endif // DIALOG_H
//dialog.cpp
//
#include "dialog.h"
#include "ui_dialog.h"
#include <QDebug>
#include <QXmlStreamReader>
#include <QNetworkAccessManager>
#include <QNetworkReply>
#include <QEvent>
#include <QDomDocument>
#include <QDomElement>
#include <QFile>
#include <QMessageBox>
#include <QMediaPlayer>
#include <QListWidgetItem>
Dialog::Dialog(QWidget *parent) :
QDialog(parent),
ui(new Ui::Dialog)
{
this->setFocusPolicy(Qt::StrongFocus);
ui->setupUi(this);
}
void Dialog::loadFile()
{
QString urlForXML = "http://apifree.forvo.com/key//format/xml/action/word-pronunciations/word/";
urlForXML += ui->textHttp->toPlainText() + "/language/de";
QNetworkAccessManager m_NetworkMngr;
QNetworkReply *reply = m_NetworkMngr.get(QNetworkRequest(urlForXML));
QEventLoop loop;
connect(reply, SIGNAL(finished()),&loop, SLOT(quit()));
loop.exec();
QXmlStreamReader xmlReader;
xmlReader.addData(reply->readAll());
QString pathmp3Url;
while(!xmlReader.atEnd()) // пока не конец потока...
{
xmlReader.readNextStartElement(); // читаем следующий открывающий элемент (тег)
if (xmlReader.name() == "pathmp3") // если имя элемента "pathmp3"
{
pathmp3Url = xmlReader.readElementText();
break;
}
}
delete reply;
if(pathmp3Url.count())
{
QNetworkAccessManager m_NetworkMngr2;
QNetworkReply *reply2 = m_NetworkMngr2.get(QNetworkRequest(pathmp3Url));
QEventLoop loop2;
connect(reply2, SIGNAL(finished()), &loop2, SLOT(quit()));
loop2.exec();
QString qstring_mp3file = "/users/derkode/documents/forvoclient-mp3/" + ui->textHttp->toPlainText() + ".mp3";
QFile mp3_file(qstring_mp3file);
mp3_file.open(QIODevice::WriteOnly);
mp3_file.write(reply2->readAll());
QMediaPlayer *player = new QMediaPlayer;
player->setMedia(QUrl::fromLocalFile(qstring_mp3file));
player->setVolume(50);
player->play();
mp3_file.close();
delete reply2;
}
else
{
QMessageBox *msgBox = new QMessageBox(this);
msgBox->setText("Ok");
msgBox->exec();
this->setFocus();
}
}
Dialog::~Dialog()
{
delete ui;
}
void Dialog::on_buttonLoad2_clicked()
{
loadFile();
}
答案 0 :(得分:1)
<强>这 - &GT;父()强> - &GT;的setFocus();在msgBox-&gt; exec()之后(接近你的代码结尾)