Place a widget according to a string defining relative coordinates to screen borders.

The position definition has to be of the form: "<x_pos><x_delta>:<y_pos><y_delta>"

<x_pos> may be one of:

• left
• right
• center
• explicit

<y_pos> may be one of:

• top
• bottom
• center
• explicit

explicit means that the widgets x or y position will not be touched. The rest should be self explanatory.

<x_delta> and <y_delta> must be of the form: +pixel_number or -pixel_number. Or comletely omitted. Note that the sign has to be there for for positive deltas, too.

For brevity two shortcuts exist:

• "explict" -> "explict:explict"
• "automatic" -> "center:center"

A few examples:

 "right-20:top"
 "center:top+10"
 "center:center"

Parameters:

• widget - The PyChan widget.
• position - A position definition.

  If the position cannot be parsed a PyChanException is thrown.