【转帖】query regarding hatching entities
 

query: regarding hatching entities

query: regarding hatching entities
hi all..
i have developed an mfc application using the libary dwg direct 1.11.01.00. in this application, i have implemented selection of polylines using hatches. and this is done successfully..
the problem is while saving the drawings, with hatches, to a new file, the new file is missing some polylines. ie. all the polylines are not being saved to the new drawing...
why is it so..
how can it be rectified...
tia
-------------------------------
regards,
rajesh parameswaran

rajuinnet
# 29th september 2004, 04:11 am

moderator join date: mar 2002
posts: 2,994
which polylines are not saved? oddbpolylines or lines which represent the hatch?
some sample files and/or pictures would be helpful...
sergey slezkin

sslezkin
# 29th september 2004, 09:11 pm

registered user join date: jul 2004
location: india
posts: 82

problem solved...
hi sergey,
thank you for your reply..
i solved the problem, its because, i was using the same object for hatching, and the hatched polylines (oddbpolyline) are added to a seperate layer. so on each selection, the old hatch polyline will be removed. (single selection). and i have used the same reference for creating the hatches..
for eg:
if(pchildobj->iskindof(oddbpolyline::desc()))
{
oddbpolylineptr pchildobjpoly2d = oddbpolyline::createobject();
pchildobjpoly2d = pchildobj;
.....
}
i used the same reference...
and i tried this
pchildobjpoly2d->copyfrom(pchildobj);
now the problem is solved..
but the entities are displaying not in an order by layers..
which ever polylines i have selected comes at the top of all the layers...
i found from the forum that, we should use od?db?sortents?table for sorting of entities..
so how to implement this,..
do i sort by layer.. or by blocktablerecord
tia
------------------
regards,
rajesh parameswaran

rajuinnet

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which polylines are not saved? oddbpolylines or lines which represent the hatch?
some sample files and/or pictures would be helpful...
sergey slezkin

problem solved...
hi sergey,
thank you for your reply..
i solved the problem, its because, i was using the same object for hatching, and the hatched polylines (oddbpolyline) are added to a seperate layer. so on each selection, the old hatch polyline will be removed. (single selection). and i have used the same reference for creating the hatches..
for eg:
if(pchildobj->iskindof(oddbpolyline::desc()))
{
oddbpolylineptr pchildobjpoly2d = oddbpolyline::createobject();
pchildobjpoly2d = pchildobj;
.....
}
i used the same reference...
and i tried this
pchildobjpoly2d->copyfrom(pchildobj);
now the problem is solved..
but the entities are displaying not in an order by layers..
which ever polylines i have selected comes at the top of all the layers...
i found from the forum that, we should use od?db?sortents?table for sorting of entities..
so how to implement this,..
do i sort by layer.. or by blocktablerecord
tia
------------------
regards,
rajesh parameswaran