Contains scroll bar parameters to be set by the $SBM_SETSCROLLINFO message, or retrieved by the $SBM_GETSCROLLINFO message
Global Const $tagSCROLLINFO = "uint cbSize;uint fMask;int nMin;int nMax;uint nPage;int nPos;int nTrackPos"
参数
| cbSize | Specifies the size, in bytes, of this structure. The caller must set this to DllStructGetSize($tagSCROLLINFO). |
| fMask | Specifies the scroll bar parameters to set or retrieve. This member can be a combination of the following values: $SIF_ALL - Combination of $SIF_PAGE, $SIF_POS, $SIF_RANGE, and $SIF_TRACKPOS. $SIF_DISABLENOSCROLL - This value is used only when setting a scroll bar's parameters. If the scroll bar's new parameters make the scroll bar unnecessary, disable the scroll bar instead of removing it. $SIF_PAGE - The nPage member contains the page size for a proportional scroll bar. $SIF_POS - The nPos member contains the scroll box position, which is not updated while the user drags the scroll box. $SIF_RANGE - The nMin and nMax members contain the minimum and maximum values for the scrolling range. $SIF_TRACKPOS - The nTrackPos member contains the current position of the scroll box while the user is dragging it. |
| nMin | Specifies the minimum scrolling position. |
| nMax | Specifies the maximum scrolling position. |
| nPage | Specifies the page size. A scroll bar uses this value to determine the appropriate size of the proportional scroll box. |
| nPos | Specifies the position of the scroll box. |
| nTrackPos | Specifies the immediate position of a scroll box that the user is dragging. An application can retrieve this value while processing the $SB_THUMBTRACK request code. An application cannot set the immediate scroll position, the SetScrollInfo function ignores this member. |
注意/说明
$SIF_xxxxx and $SB_xxxxx for scrollbar require WindowsConstants.au3
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