QT 总结（四） 1.中文编码乱码 2.QFileDialog 打开文件框 3.调用其它UI文件 4.QMessageBox弹窗

分手后的思念是犯贱 2022-08-04 09:21 64阅读 0赞

1.中文编码 乱码

头文件\#include <QTextCodec>

#include "mainwindow.h"
    #include <QApplication>
    #include <QTextCodec> //添加头文件
    
    int main(int argc, char *argv[])
    {
        QApplication a(argc, argv);
       // QTextCodec::setCodecForTr(QTextCodec::codecForLocale()); //使程序中可以使用中文
    
        QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF8"));
        QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF8"));
        QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF8"));
       // QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF8"));
    
        MainWindow w;
        w.show();
    
        return a.exec();
    }

2.QFileDialog 打开文件框

\#include <QFileDialog>

void MainWindow::on_pushButton1_clicked()//窗口1
    {
    
        QStringList fileNames = QFileDialog::getOpenFileNames(this,tr("文件对话框"),
                                                    "F:",tr("图片文件(*png *jpg)"));
        qDebug()<< "fileNames:" << fileNames;
    
    }

![20150821141347863][]

3.调用其它UI文件

![20150821150152208][]

首先 要头文件包含

\#include “dialog\_biaozhun.h"  
Dialog\_biaozhun \*dialog = new Dialog\_biaozhun();  
dialog->exec()；  
写到相应的槽函数里就ok了

dialog->setWindowTitle("标号"); 设置dialog的窗口名

![20150821150452026][]

4.QMessageBox弹窗

\#include <QMessageBox>

QMessageBox::information(NULL,"ok","Link to Function is OK!");

![20150822140127112][]

[20150821141347863]: /images/20220731/9ac12dea498345dca110271a767957bc.png
[20150821150152208]: /images/20220731/00343f1a4e844dad88e54e4cf0893a65.png
[20150821150452026]: /images/20220731/eea1a31d13b940858e487cd2197f3399.png
[20150822140127112]: /images/20220731/ce2539b64ee04663ab839bd3043a40e6.png