Creates a new child window.
CMDIChildWnd* CreateNewChild(
   CRuntimeClass* pClass,
   UINT nResource,
   HMENU hMenu = NULL,
   HACCEL hAccel = NULL
);
Parameters
- pClass 
 The run-time class of the child window to be created.
- nResource 
 The ID of shared resources associated with the child window.
- hMenu 
 The child window's menu.
- hAccel 
 The child window's accelerator.
Remarks
Use this function to create child windows of an MDI frame window.
Example
// CMainFrame is a CMDIFrameWnd-derived class,
// OnNewDraw is a menu command handler,
// CDrawFrame is a CMDIChildWnd-derived class.
void CMainFrame::OnNewDraw()
{
   CreateNewChild(RUNTIME_CLASS(CDrawFrame), IDR_DRAW, m_hDrawMenu, 
      m_hDrawAccel);
}
This example is an excerpt from Knowledge Base article Q201045, "HOWTO: Add Multiple Window Types to a Non-Document/View MDI App." Knowledge Base articles are available in the MSDN Library Visual Studio documentation or at https://support.microsoft.com.
Requirements
Header: afxwin.h