在其他C文件界面使用Ui指针

#pragma once
#include "ui_QtWidgetsApplication.h"            //头文件
class import
{
public:
    Ui::QtWidgetsApplicationClass* cui = NULL;    //ui指针
    import();
    void getDeviceNum();                           //函数
};

#include "import.h"
#include <qdebug.h>
import::import()
{
}
void import::getDeviceNum()    //
{
    QString str = cui->pushButton_getDeviceNum->text();
    qDebug() << str;
}

#pragma once
#include <QtWidgets/QWidget>
#include "ui_QtWidgetsApplication.h"
#include "import.h"                                //头文件
#if _MSC_VER >= 1600
#pragma execution_character_set("utf-8")
#endif
class QtWidgetsApplication : public QWidget
{
    Q_OBJECT
public:
    QtWidgetsApplication(QWidget *parent = nullptr);
    ~QtWidgetsApplication();
public:
    void initDevice();
private:
    Ui::QtWidgetsApplicationClass *ui;        //！！！使用指针
    import cest;                                
};

#include "QtWidgetsApplication.h"
#include "import.h"
QtWidgetsApplication::QtWidgetsApplication(QWidget *parent)
    : QWidget(parent)
{
    ui->setupUi(this);            //指针
    cest.cui = ui;                //！！！指针赋值
    connect(ui->pushButton_init, &QPushButton::clicked, this, &QtWidgetsApplication::initDevice);
}
QtWidgetsApplication::~QtWidgetsApplication()
{
}
void QtWidgetsApplication::initDevice()
{
    cest.getDeviceNum();
}

/*
...
*/