关于滚动条的问题！(50分)

chinasf · 2002-08-08

我在定义滚动条的WMHScroll和WMVScroll事件时，不明白Message.ScrollCode中的 SB_BOTTOM,SB_ENDSCROLL,SB_LINELEFT,SB_LINERIGHT,SB_PAGELEFT,SB_PAGERIGHT, SB_THUMBPOSITION,SB_THUMBTRACK,SB_TOP,SB_LINEDOWN,SB_LINEUP,SB_PAGEDOWN, SB_PAGEUP是什么意思，请问谁能帮我？特别是SB_THUMBPOSITION,SB_THUMBTRACK！

xianjun · 2002-08-12

MSDN能帮你。你可以看帮助是怎么说的啊

代码:

<br>nScrollCode<br><br>Value of the low-order word of wParam. Specifies a scroll bar value that indicates the user's scrolling request. This parameter can be one of the following values: <br><br>Value	Meaning<br>SB_BOTTOM	Scrolls to the lower right.<br>SB_ENDSCROLL	Ends scroll.<br>SB_LINEDOWN	Scrolls one line down.<br>SB_LINEUP	Scrolls one line up.<br>SB_PAGEDOWN	Scrolls one page down.<br>SB_PAGEUP	Scrolls one page up.<br>SB_THUMBPOSITION	Scrolls to the absolute position. The current position is specified by the nPos parameter.<br>SB_THUMBTRACK	Drags scroll box to the specified position. The current position is specified by the nPos parameter.<br>SB_TOP	Scrolls to the upper left.<br>

chinasf · 2002-08-15

SB_THUMBPOSITION Scrolls to the absolute position. The current position is specified by the nPos parameter. SB_THUMBTRACK Drags scroll box to the specified position. The current position is specified by the nPos parameter. 这两句不很明白，可否说的清楚一些！

xianjun · 2002-08-15

SB_THUMBPOSITION 滚动到(Scrolls)指定的（nPos）位置 SB_THUMBTRACK 拖动到(Drags scroll)指定的（nPos）位置

chinasf · 2002-08-15

多谢！给分了！

chinasf · 2002-08-15

接受答案了.

关于滚动条的问题！(50分)

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