Basic operation of the edit box in MFC

The operations on the edit box mainly include obtaining the content in the edit box, assigning values ​​to the content in the edit box, and updating the content in the edit box.
There are two main methods:
as shown below, this is dialog

Method 1:
Take Button1 as an example

void CMFCApplication1Dlg::OnBnClickedButton1()
{
    
    
	// 获取编辑框中1的内容
	UpdateData(TRUE);// --刷新控件的值到对应的变量

	/*
	UpdateData(TRUE) -- 刷新控件的值到对应的变量
　  UpdateData(FALSE) -- 拷贝变量值到控件显示
	*/
	
    // 给编辑框2赋值
	m_lucky2 = m_lucky1;
//	UpdateData(FALSE); // 与下面一条语句作用一致
	GetDlgItem(IDC_EDIT2)->SetWindowText(m_lucky2);

	// 给编辑框3赋值   
	m_lucky3 = "12345";
	UpdateData(FALSE);
}

Method 2:
Take Button2 as an example

void CMFCApplication1Dlg::OnBnClickedButton2()
{
    
    
	// 获取编辑框中1的内容
	CString str;
	GetDlgItem(IDC_EDIT1)->GetWindowText(str);

	// 给编辑框2赋值
	m_lucky2 = str;
	GetDlgItem(IDC_EDIT2)->SetWindowText(m_lucky2);

	// 给编辑框3赋值   
	m_lucky3 = "12345";
	UpdateData(FALSE);
}

The above is the basic operation of the two edit boxes based on MFC.