'TRACEO' : undeclared identifier怎么改正？？

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) { if(!m_drawToolBar.Create(this) || !m_drawToolBar.LoadToolBar(IDR_DRAW)) { TRACEO("Failed to create status bar\n "); return -1; }

#include "afx.h" // 添加头文件

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct) { 
  if(!m_drawToolBar.Create(this) || !m_drawToolBar.LoadToolBar(IDR_DRAW)) { 
    TRACE("Failed to create status bar\n "); // 使用TRACE宏输出日志
    return -1; 
  }
  // ...
}