哪位高手能说说这个函数的第一个参数是什么意思

谁能说说这个函数的第一个参数是什么意思?
CreateWindowEx(   0,STATUSCLASSNAME,TEXT( " "),
WS_CHILD   |   WS_BORDER   |   WS_VISIBLE   |   WS_CLIPSIBLINGS,
                                                                      -100,   -100,
                                                                      10,   10,
                                                                      hwnd,
                                                                      HMENU(IDB_STATUS),
                                                                      g_hinst,
                                                                      NULL);

------解决方案--------------------
第一个参数是扩充风格设置,为0的话应该就是没有任何扩充风格吧。

楼主为什么不查MSDN呢?上面说的很详细啊。
------解决方案--------------------
dwExStyle
[in] Specifies the extended window style of the window being created. This parameter can be one or more of the following values.
WS_EX_ACCEPTFILES
Specifies that a window created with this style accepts drag-drop files.
WS_EX_APPWINDOW
Forces a top-level window onto the taskbar when the window is visible.
WS_EX_CLIENTEDGE
Specifies that a window has a border with a sunken edge.
WS_EX_COMPOSITED
Windows XP: Paints all descendants of a window in bottom-to-top painting order using double-buffering. For more information, see Remarks. This cannot be used if the window has a class style of either CS_OWNDC or CS_CLASSDC.
WS_EX_CONTEXTHELP

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