DoDataExchange(CDataExchange* pDX) 如何被调用的

CDialog::OnInitDialog() 中存在这么一部分代码

 

 // transfer data into the dialog from member variables
 if (!UpdateData(FALSE))
 {
  TRACE0("Warning: UpdateData failed during dialog init./n");
  EndDialog(-1);
  return FALSE;
 }

 

UpdateData 中存在这么一部分代码

 

 BOOL bOK = FALSE;       // assume failure
 TRY
 {
  DoDataExchange(&dx);
  bOK = TRUE;         // it worked
 }