Why does Visual C++ not hit a breakpoint in, or step through a specific function?

I have the following:

我有以下内容：

classA::FuncA()
{
 ... code
   FuncB();
 ... code
}

classA::FuncB(const char *pText)
{
    SelectObject(m_hDC, GetStockObject (  SYSTEM_FONT)); 
    wglUseFontBitmaps(m_hDC, 0, 255, 1000); 
    glListBase(1000); 
    glCallLists(static_cast<GLsizei>(strlen(pText)), GL_UNSIGNED_BYTE, pText); 
}
classA::FuncA