【转帖】cannot render mleader
 

cannot render mleader
cannot render mleader
hi,
when trying to view the attached file, odamfcapp (2.7.1) shows the message "rendering aborted - invalid index". the file is from a customer; it contains a special formatted mleader - i wasn't able to create an mleader which causes the same effect.
our main program crashes when opening the file while zooming to the extents of the active viewport (zoomextents).
are there any ways to avoid the crash?
torsten
attached files

hi torsten,
this is bug in dd. mleader with 'none' leader type (invisible leaders) not supported in mleader rendering code.
i entered a new bug on our bugzilla for this defect:
hi,
thanks for the info! are there any possibilities to avoid the crash with 2.7.1?
torsten

quote:
are there any possibilities to avoid the crash with 2.7.1?
because dd mleader entity initially not support oddbmleaderstyle::kinvisibleleader leader line type, complete fix need some modifications inside mleader entity draw functionality, geometry extents computation and grip points. minimal fix need only modifications in mleader draw. all changes can be made into dbmleader.cpp if you have sources.
elsewhere, following workaround may be helpful:
before rendering iterate all entities in block, open mleaders for write and if leaderlinetype is equal oddbmleaderstyle::kinvisibleleader, remove all leaders from mleader.

hi,
quote:
before rendering iterate all entities in block, open mleaders for write and if leaderlinetype is equal oddbmleaderstyle::kinvisibleleader, remove all leaders from mleader.
i'll test my seggession - it avoid rendering crash correctly.
hi,
thanks for the advice - it works for me, too!
torsten