code_app/modules/twainui/dialog_progress_ui.h

#ifndef DIALOG_PROGRESS_UI_H
#define DIALOG_PROGRESS_UI_H

#include <QDialog>
#include <qtranslator.h>
#include <QCloseEvent>
#include "twainui.h"
#include "base/HGThread.h"

namespace Ui {
class Dialog_progress_ui;
}

class Dialog_progress_ui : public QDialog
{
    Q_OBJECT

        bool quit_ = false;
public:
    explicit Dialog_progress_ui(class Manager *mgr, std::function<void (ui_result)> callback, std::function<void (int, void *, int)> *notify, QWidget *parent = nullptr);
    ~Dialog_progress_ui();

protected:
        virtual void keyPressEvent(QKeyEvent *e) override;
        virtual void closeEvent(QCloseEvent *e) override;

signals:
    void scan_status(QString finishInfo, bool isScanning);
    void scan_finish(int flag, QString finishInfo);
    void image_recived();

private slots:
    void on_pbtn_cancelScan_clicked();
    void on_pbtn_close_clicked();

    void on_scan_status(QString finishInfo, bool isScanning);
    void on_scan_finish(int flag, QString finishInfo);
    void on_image_recived();

public:
    static void HGAPI ThreadFunc(HGThread thread, HGPointer param);
    static void FuncNotify(int event, void *msg, int flag);
    void clear_callback(void)
    {
        quit_ = true;
        m_callback = std::function<void(ui_result)>();
    }

private:
    Ui::Dialog_progress_ui *ui;

    int m_imageRecivedCount;

    class Manager *m_mgr;
    std::function<void (ui_result)> m_callback;
    QTimer *m_timer;
    bool m_isScanning;
    HGThread m_thread;
};

#endif // DIALOG_PROGRESS_UI_H