［提问］QT自定义槽问题 [复制链接]

先用designer做了一个ui，然后生成了ui.h，然后分别手动添加了.cpp 和.h，make，测试自定义槽显示msgbox，可以实现，现在想要实现一些算法，也就是添加一般的函数，该怎么添加呢，可以把c写的算法直接添加进来么，我是新手，请前辈指导～谢谢～

#include <QMessageBox>
#include "MyDlg.h"
  
MyDlg::MyDlg()
{
  ui.setupUi(this);
  QObject::connect(ui.pushButton, SIGNAL(clicked()), this, SLOT(close()));
  QObject::connect(ui.pushButton_2, SIGNAL(clicked()), this, SLOT(show()));
  QObject::connect(ui.pushButton_3, SIGNAL(clicked()), this, SLOT(openio()));
  QObject::connect(ui.pushButton_4, SIGNAL(clicked()), this, SLOT(start(int)));
  QObject::connect(ui.pushButton_5, SIGNAL(clicked()), this, SLOT(stop()));
}
//自定义槽
void MyDlg::show()
{
   QMessageBox::information(this, tr("Hello"), tr("Hello World"), tr("OK"));
}

void MyDlg::openio()
{
   QMessageBox::information(this, tr("Hello"), tr("Open IO"), tr("OK"));
}

void MyDlg::start(int value) //解算，此处为算法槽
{
  Functionforstart(value) //  test:return "0" in Text Browser
}

void MyDlg::stop()
{
   QMessageBox::information(this, tr("Hello"), tr("Stop"), tr("OK"));
}