[MSDN Library April 2000] HDN_BEGINTRACK (75.4528985507246%)
MSDN Library - April 2000 > Platform SDK > User Interface Services > Windows Common Controls > Header Controls > Header Control Notification Messages
[MSDN Library April 2000] HDN_BEGINTRACK (41.5972222222222%)
MSDN Library - April 2000 > Windows CE Documentation > Application Development > API Reference > User Interface > Messages