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Chip 1997 January
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1996-04-02
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About LINESTRG
===============
This application contains a command PLACE MYLINESTR, which places a line string element.
When the number of vertices in the line string element reach the MAX_VERTICES limit, a
complex chain of line string elements is created.
The mdlTransient_xxx function group is used to maintain the line string element until
MAX_VERTICES is reached or the user finishes the current line string. Only the last
segment of the line string is displayed in dynamics; the remainder of the line string
is either a transient element or a complex chain of line strings which was added to the file.
The user can undo a previous vertex using the STATE_OOPSFUNCTION event
in the mdlState_setFunction asynchronous function group. The user can undo vertices until
the last vertex in the line string is undone or the last vertex previous to the complex chain
is undone. The user cannot undo a vertex in a line string which was added to the complex chain.