DwtListBoxSetPos - Makes a specified position (item number in the list) the top visible position in a list box, or as close to the top as
void DwtListBoxSetPos(widget, position)
widget Specifies the ID of the list box widget whose specified item number in the list you want displayed in the top position.
position Specifies the item number in the list displayed in the top position in the list box.
The DwtListBoxSetPos function makes the specified position (the item number in the list) the top visible position in a list box. The func-
tion determines which item in the list box is displayed at the top of the list box, the choice of which is limited by the DwtNitemsCount
and DwtNvisibleItemsCount attributes to the list box widget. When DwtNvisibleItemsCount is greater than 1 and less than DwtNitemsCount,
the list box widget fills the list box with the maximum visible items regardless of the position value.
For example, if DwtNitemsCount is 10 and DwtNvisibleItemsCount is 5, you cannot make item 8 be displayed at the top of the list box.
Instead, items 6 through 10 would be displayed. Setting position to 4 would make items 4 through 8 be displayed. If DwtNvisibleItemsCount
is 1, you can make any item in the list be displayed at the top of the list box.
Guide to the XUI Toolkit: C Language Binding
Guide to the XUI Toolkit Intrinsics: C Language Binding
Check Out this Related Man Page
XmListPosToBounds(library call) XmListPosToBounds(library call)
XmListPosToBounds -- A List function that returns the bounding box of an item at a specified position in a list
XmListPosToBounds returns the coordinates of an item within a list and the dimensions of its bounding box. The function returns the associ-
ated x and y-coordinates of the upper left corner of the bounding box relative to the upper left corner of the List widget, as well as the
width and the height of the box. The caller can pass a NULL value for the x, y, width, or height parameters to indicate that the return
value for that parameter is not requested.
widget Specifies the ID of the List widget.
position Specifies the position of the specified item. A value of 1 indicates the first item in the list; a value of 2 indicates the sec-
ond item; and so on. A value of 0 (zero) specifies the last item in the list.
x Specifies a pointer to the returned x-coordinate of the item.
y Specifies the pointer to the returned y-coordinate of the item.
width Specifies the pointer to the returned width of the item.
height Specifies the pointer to the returned height of the item.
For a complete definition of List and its associated resources, see XmList(3).
If the item at the specified position is not visible, returns False, and the returned values (if any) are undefined. Otherwise, this func-
tion returns True.
RELATED XmList(3) and XmListYToPos(3).
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