，因为SetMaxTipWidth不是静态方法

您必须在已创建/附加到的CToolTipCtrl对象上调用该方法；如果因为使用WTL而没有得到，请发送 ^ ]消息，使用CWindow(<your control''s HWND here>).SendMessage(TTM_SETMAXTIPWIDTH,0,-1)或类似的

because SetMaxTipWidth is not a static method

You''ll have to call that method on the CToolTipCtrl object you have created/attached to; if you haven''t got one because you''re using WTL, just send the TTM_SETMAXTIPWIDTH[^] message to the control, using CWindow(<your control''s HWND here>).SendMessage(TTM_SETMAXTIPWIDTH,0,-1) or similar