MFC对话框中的编辑控件的7种操作方式

　　　//第一种方式

         int num1,num2,num3;

         char ch1[10],ch2[10],ch3[10];

         GetDlgItem(IDC_EDIT1)->GetWindowText(ch1,10);

         GetDlgItem(IDC_EDIT2)->GetWindowText(ch2,10);

         num1 = atoi(ch1);

         num2 = atoi(ch2);

         num3 = num1 + num2;

         itoa(num3,ch3,10);

         GetDlgItem(IDC_EDIT3)->SetWindowText(ch3);

        

         //第二种方式

         int num1,num2,num3;

         char ch1[10],ch2[10],ch3[10];

         GetDlgItemText(IDC_EDIT1,ch1,10);

         GetDlgItemText(IDC_EDIT2,ch2,10);

         num1 = atoi(ch1);

         num2 = atoi(ch2);

         num3 = num1 + num2;

         itoa(num3,ch3,10);

         SetDlgItemText(IDC_EDIT3,ch3);

         //第三种方式

         int num1,num2,num3;

         num1 = GetDlgItemInt(IDC_EDIT1);

         num2 = GetDlgItemInt(IDC_EDIT2);

         num3 = num1 + num2;

         SetDlgItemInt(IDC_EDIT3,num3);

         //第四种方式（给每个编辑框添加成员变量m_num1(int),m_num2(int),m_num3(int)）

         //在此，可以设置设置输入数字的大小范围（在ClassWizard），可以对你输入的字符进行校验（比如，要求int类型，你输入了字母）

         UpdateData();

         m_num3 = m_num1 + m_num2;

         UpdateData(FALSE); 

        

         //第五种方式（给每个编辑框添加控件变量m_edit1(Category:Control,Variable type:CEdit),m_edit2(Category:Control,Variable type:CEdit),m_edit3(Category:Control,Variable type:CEdit)）

         int num1,num2,num3;

         char ch1[10],ch2[10],ch3[10];

        

         m_edit1.GetWindowText(ch1,10);

         m_edit2.GetWindowText(ch2,10);

         num1 = atoi(ch1);

         num2 = atoi(ch2);

         num3 = num1 + num2;

         itoa(num3,ch3,10);

         m_edit3.SetWindowText(ch3);

         //第六种方式

         int num1,num2,num3;

         char ch1[10],ch2[10],ch3[10];

         //::SendMessage(GetDlgItem(IDC_EDIT1)->m_hWnd,WM_GETTEXT,10,(LPARAM)ch1);

         //::SendMessage(m_edit1.m_hWnd,WM_GETTEXT,10,(LPARAM)ch1);

         GetDlgItem(IDC_EDIT1) ->SendMessage(WM_GETTEXT,10,(LPARAM)ch1);

         GetDlgItem(IDC_EDIT2) ->SendMessage(WM_GETTEXT,10,(LPARAM)ch2);

         num1 = atoi(ch1);

         num2 = atoi(ch2);

         num3 = num1 + num2;

         itoa(num3,ch3,10);

         GetDlgItem(IDC_EDIT3) ->SendMessage(WM_SETTEXT,0,(LPARAM)ch3);

         //第七种方式

         int num1,num2,num3;

         char ch1[10],ch2[10],ch3[10];

         SendDlgItemMessage(IDC_EDIT1,WM_GETTEXT,10,(LPARAM)ch1);

         SendDlgItemMessage(IDC_EDIT2,WM_GETTEXT,10,(LPARAM)ch2);

         num1 = atoi(ch1);

         num2 = atoi(ch2);

         num3 = num1 + num2;

         itoa(num3,ch3,10);

         SendDlgItemMessage(IDC_EDIT3,WM_SETTEXT,0,(LPARAM)ch3);

         //编辑框复选函数 EM_SETSEL

         SendDlgItemMessage(IDC_EDIT3,EM_SETSEL,1/*开始位置*/,3/*结束位置*/);//If the start is 0 and the end is –1, all the text in the edit control is selected. If the start is –1, any current selection is deselected.

         //设置编辑框3为当前焦点所在

         m_edit3.SetFocus();