Question

我有一个名为RunProcess的函数。我想在并发进程中使用它来使GUI响应，所以我试图在并发进程中运行我的函数，但它不识别该函数。这是我的班级

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "gdal_priv.h"
#include "cpl_conv.h" // for CPLMalloc()
#include "ogr_srs_api.h"
#include <QDir>
#include <QFile>
#include <QDebug>
#include <iostream>
#include <cstring>
#include <string>
#include <QFileDialog>
#include <QThread>
#include <QtConcurrent/QtConcurrent>


using namespace QtConcurrent;
MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{


    ui->setupUi(this);
    connect(ui->startProcess, SIGNAL (released()), this, SLOT (StartProcess()));

}




void MainWindow::StartProcess(){


    sendinfo("Starting Process... Note that the input images <b>must<\b> be in ESPG:3857.");

    QString dir = QFileDialog::getExistingDirectory(this, tr("Open Directory"),
                                                    "/home",
                                                    QFileDialog::ShowDirsOnly
                                                    | QFileDialog::DontResolveSymlinks);


    if(dir==""){
        sendwarning("nothing is selected.");
            return;
    }
    sendinfo("The selected folder is: "+dir);


    QFuture<void> f1 = run(RunProcess,dir);
    f1.waitForFinished();

}


void MainWindow::RunProcess( QString dir){

    if(dir==""){
        sendwarning("nothing is selected.");
            return;
    }
    sendinfo("The selected folder is: "+dir);
    QString path(dir);
    QDir directory(path);

    if(directory.exists()){
        ....
    }else{

        //directory does not exist
        senderror("directory does not exist");

    }

}

这是我的标题

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include "gdal_priv.h"
#include "ogr_spatialref.h"
#include "gdal_utils_priv.h"
#include "cpl_error.h"
namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    explicit MainWindow(QWidget *parent = 0);
    void RunProcess();

    ~MainWindow();
public slots:
    void StartProcess();
private:
    Ui::MainWindow *ui;
    void senderror(QString msg);
    void sendinfo(QString msg);
    void sendwarning(QString msg);
    void gettext(QString msg,QString color);
};

#endif // MAINWINDOW_H

上面的代码返回

 mainwindow.cpp:180: error: invalid use of non-static member function ‘void MainWindow::RunProcess()’
     QFuture<void> f1 = run(RunProcess,dir);
                                         ^

你可以帮我找到我的错误吗？感谢

无效使用非静态成员函数QtConcurrent

0 个答案: