Unable to change existing Custom Hatch Patterns within DWG file

[RobertAitken]

I wrote some hatch patterns for a client for hazardous classifications. They worked perfectly initially. Now I can see the hatch patterns when I call bhatch. If I go back into the test drawing I used initially I can add the new hatch patterns but I can't change existing hatching. I can change any new hatching to any of the available patterns.

I've done a FindFile for acad.pat and it finds it in the same location for each drawing so it's using the same pattern.

Anyone got any ideas/suggestions?

Many thanks

Robert Aitken

[Mike.Perry]

Hi

How are you attempting to update the existing Custom Hatch Pattern Objects in your drawing file, with the new Custom Hatch Pattern(s) definitions ?

Is it possible to post a sample drawing file that exhibits the behaviour you have described above, plus the new Custom Hatch Pattern(s) definitions...

Have a good one, Mike

[RobertAitken]

Thanks Mike,

I've attached the acad.pat file I amended (now acadpat.txt) and the initial drawing I used the patterns on.

I can't use the pattern on any other drawing.

Thanks again.

Robert

PS Usual copyright stuff applies. Company confidential etc etc

[Mike.Perry]

I've attached the acad.pat file I amended (now acadpat.txt) and the initial drawing I used the patterns on.

<SNIP>

Hi

Without looking at the drawing file, could the following be the problem ( or have I misunderstood - most likely )...

In your above post, you attached "acadpat.txt". I therefore renamed it to AcadPat.pat OR have I renamed the file incorrectly ? Should I simply rename "acadpat.txt" to Acad.pat ?

If you are using AcadPat.pat as you Hatch Patter file, that is the cause of the problem.

As far as I know, AutoCAD can use...

* Acad.pat
* AcadIso.pat
* Custom.pat ( One Hatch Pattern definition per file - File name must match the "Pattern-Name" as defined in the file header ).

Have a good one, Mike

[RobertAitken]

Hi

Without looking at the drawing file, could the following be the problem ( or have I misunderstood - most likely )...

In your above post, you attached "acadpat.txt". I therefore renamed it to AcadPat.pat OR have I renamed the file incorrectly ? Should I simply rename "acadpat.txt" to Acad.pat ?

Mike

It blocks you from uploading a pat file so I renamed the acad.pat file to acadpat.txt. Just rename it to acad.pat and it'll be OK ish.

Thanks again

Robert

[Mike.Perry]

It blocks you from uploading a pat file so I renamed the acad.pat file to acadpat.txt. Just rename it to acad.pat and it'll be OK ish.

Hi

Ok! I renamed to Acad.pat ( was just checking, as most people here on the forums only change the file type extension for uploading purposes ie Acad.txt = Acad.pat / Acadpat.txt = Acadpat.pat ).

i then carried out the following...

* Opened drawing "TEMP-22392_09.dwg" ( Hmmm, I might have to borrow parts of this drawing file for my own use ).

* Opened Acad.pat ( your version ) in a Plain Text editor.

* Amended Hatch Pattern definition "ZONE1DGV" ( for the sake of science ).

* Saved Acad.pat

* Double-Clicked ( or run the _.HatchEdit command ) on a Hatch Pattern Object that uses Hatch Pattern definition "ZONE1DGV", Hatch Edit dialog box opens.

* Click "OK" button to exit dialog box.

* Selected Hatch Pattern Object updated correctly ie Reflected the changes I made in Acad.pat earlier ( for the sake of science ).

Have a good one, Mike

[RobertAitken]

Thanks Mike,

Found out what was causing the problem. I'd amended acad.pat and now the system is using acadiso.pat.

Thanks for all your help Mike.

You're a god but you know that anyway.

Hope you and Mel have a good time when she's over. As if you both won't

Robert

[Mike.Perry]

<SNIP>

Found out what was causing the problem. I'd amended acad.pat and now the system is using acadiso.pat.

<SNIP>

Hi Robert

Excellent! so it was the old system variable Measurement trick pulling at your leg... thanks for posting back the solution, I am sure others will benefit from such information in the future.

No worries...

Nope! just a regular CAD user here...

Thank you, we definitely intend to

Mike

[craig.65586]

I'd just like to add the following from ACAD Help, after much confusion myself:

"....MEASUREINIT controls which hatch pattern and linetype files are used. The Drawing1.dwg that opens when you start the program is a drawing that is started from scratch.

0
Imperial; uses the hatch pattern file and linetype file designated by the ANSIHatch and ANSILinetype registry settings

1
Metric; uses the hatch pattern file and linetype file designated by the ISOHatch and ISOLinetype registry settings"

I had a problem with autocad hanging after attempting to select a different hatch pattern in the bhatch dialog. I finally found the error in the acadiso.pat file. My user defined custom patterns were altered during migration from a previous release. An unidentifed symbol was inserted in place of an "enter" stroke, so the file could not be read. I did not realise that acadiso.pat was being used however and was unaware how to switch between the two. Caused days of confusion and frustration.

I hope this helps someone else.