非模式窗口创建的sample

This is from MSDN
"Quote"
FIX: The CDialog::Create() function returns an incorrect value when a dialog box is created in Visual C++
View products that this article applies to.
This article was previously published under Q193099
"Unquote"

Sample:
// Create a modeless dialog box. In this example, m_pModeless is a
   // member variable of type CModeless where CModeless is a CDialog-
   // derived class. IDD_MODELESS is the ID number of a dialog-box template
   // resource.
   m_pModeless = new CModeless;
   if (m_pModeless->Create(IDD_MODELESS, this) && ::IsWindow(m_pModeless->m_hWnd))
   {
         // ... succeeded in dialog-box creation.
   }
   else
   {
         // ... failed in dialog-box creation.
   }