[Lazarus] RE : Trunk IDE won't display project's main form

[Mark Morgan Lloyd]

Sven Barth wrote:
> On 11.02.2012 15:48, Hans-Peter Diettrich wrote:
>> Ludo Brands schrieb:
>>>> Sorry, I think I might have been ambiguous. It's the IDE which won't
>>>> display the form when it tries to load the project, so it sounds
>>>> suspiciously as though I might have to instrument IDE code- and quite
>>>> frankly I don't know where to start.
>>>>
>>> When starting lazarus from console, do you get any error messages in the
>>> console?
>>
>> That was misleading, see the response :-(
>>
>> Of interest are eventual error messages occuring when the application is
>> started in the IDE (F9).
> 
> You are aware that Mark's problem is loading the form in the IDE's 
> designer?

I have to take responsibility if he didn't, I'm not sure my first few 
attempts at explaining the problem were particularly rigorous.

Anyway, I've now reverted to 0.9.20.3+2.6.0, erased the project 
directory, reloaded from svn and found that Lazarus loads and compiles 
it happily. But a run throws lots of runtime errors similar to

TApplication.HandleException Error reading StringGrid1.Columns: Error 
reading TGridColumn.Title.PrefixOption: Unknown property: "PrefixOption"

Removing the affected lines from the .lfm gives me something that 
appears to compile and run OK. I'm going to work through any other 
projects I've touched over the last few months checking they're OK with 
0.9.30 on x86 before doing anything else, but will revisit trunk presently.

-- 
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]