edit box现实问题

Question

m_x0为一个edit box空间的变量映射
m_x0.Format("%lf",_x0);
GetDlgItem(IDC_x0)->SetWindowText(m_x0);之前的程序就用的这个语句就可以正确显示，但是在另一个程序里用这个语句就会在这句报错，错误显示如下：变量映射都是CString类型的，大家知道可能是哪里的问题么
void forwardDlg::OnRead() 
{
// TODO: Add your control notification handler code here
CFileDialog fileDlg(TRUE);
if (fileDlg.DoModal()==IDOK)
{
CString str=fileDlg.GetPathName();
FILE *pfile=fopen(str,"rt");
//内方位元素
fscanf(pfile,"%lf",&m_x0);
fscanf(pfile,"%lf",&m_y0);
fscanf(pfile,"%lf",&m_f);
//左片
fscanf(pfile,"%5.3lf",&m_XS1);
fscanf(pfile,"%5.3lf",&m_YS1);
fscanf(pfile,"%5.3lf",&m_ZS1);
fscanf(pfile,"%5.6lf",&m_phi1);
fscanf(pfile,"%5.6lf",&m_omega1);
fscanf(pfile,"%5.6lf",&m_kappa1);
fscanf(pfile,"%5.3lf",&m_x1);
fscanf(pfile,"%5.3lf",&m_y1);
//右片
fscanf(pfile,"%5.3lf",&m_XS2);
fscanf(pfile,"%5.3lf",&m_YS2);
fscanf(pfile,"%5.3lf",&m_ZS2);
fscanf(pfile,"%5.6lf",&m_phi2);
fscanf(pfile,"%5.6lf",&m_omega2);
fscanf(pfile,"%5.6lf",&m_kappa2);
fscanf(pfile,"%5.3lf",&m_x2);
fscanf(pfile,"%5.3lf",&m_y2);
//
m_x0.Format("%lf",_x0);
GetDlgItem(IDC_x0)->SetWindowText(m_x0);
m_y0.Format("%lf",_y0);
GetDlgItem(IDC_y0)->SetWindowText(m_y0);
m_f.Format("%lf",_f);
GetDlgItem(IDC_f)->SetWindowText(m_f);
UpdateData(false);
fclose(pfile);
}

}
MFX显示

Answer 1

在为变量赋值后，用UpdateData
或者用ReplaceSel来替换

Answer 2

m_x0.Format("%lf",_x0);
GetDlgItem(IDC_x0)->SetWindowText(m_x0);没看到_x0这个变量，如果是m_x0的话，MSDN已经说明了，禁止这样使用。

Answer 3

_x0这个变量是在头文件里定义的，m_x0是对应的变量映射的

Answer 4

1)定义控件变量 m_x0 对应EDIT控件的ID为IDC_x0
m_x0.Format("%lf",_x0); 
UpdateData(FALSE);
//GetDlgItem(IDC_x0)->SetWindowText(m_x0); 
2) 不定义任何和EDIT控件相关的变量，直接使用 IDC_x0操作控件。   CString str;
   str.Format("%lf",_x0); 
   GetDlgItem(IDC_x0)->SetWindowText(m_x0);