05-25-2013
Hmmmm - the requestor didn't ask for alternative solutions, he asked to explain why that "strange" behaviour occurred (which, btw, is not strange but correct). Let's go and try: According to the gawk man page, the array f will be filled with "the matches". The first match ( f[1] ) is being used as a separator in the following split, and then the chars before the first match (array[1]) will be substituted with "".
If there's no match, like in the second line, f will be empty, and split will use an empty separator, resulting in a per char split. array[1] will then hold the "S" which will be removed.
Logical, understandable?
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LEARN ABOUT ULTRIX
dwtscrollwindowsetareas
DwtScrollWindowSetAreas(3Dwt) DwtScrollWindowSetAreas(3Dwt)
Name
DwtScrollWindowSetAreas - Sets up or adds the window region, and the horizontal or vertical scroll bar widgets to the scroll window widget.
Syntax
void DwtScrollWindowSetAreas(widget, horizontal_scroll_bar, vertical_scroll_bar, work_region)
Widget widget;
Widget horizontal_scroll_bar;
Widget vertical_scroll_bar;
Widget work_region;
Arguments
widget Specifies the scroll window widget ID.
horizontal_scroll_bar
Specifies the scroll bar widget ID for the horizontal scroll bar to be associated with the scroll window widget. You can set or
specify this ID only after creating an instance of the main window widget. The attribute name associated with this argument is
DwtNhorizontalScrollBar.
vertical_scroll_bar
Specifies the scroll bar widget ID for the vertical scroll bar to be associated with the scroll window widget. You can set or
specify this ID only after creating an instance of the main window widget. The attribute name associated with this argument is
DwtNverticalScrollBar.
work_region
Specifies the widget ID for the window to be associated with the scroll window work area. You can set or specify this ID only
after you create an instance of the main window widget.
Description
The DwtScrollWindowSetAreas function adds or changes a window work region and a horizontal or vertical scroll bar widget to the scroll win-
dow widget for the application. You must call this function before the scroll window widget is realized, that is, before calling the X
intrinsics function XtRealizeWidget. Each widget is optional and may be passed as NULL.
See Also
DwtScrollWindow(3Dwt), DwtWindow(3Dwt),
Guide to the XUI Toolkit: C Language Binding
Guide to the XUI Toolkit Intrinsics: C Language Binding
DwtScrollWindowSetAreas(3Dwt)