New to IDE, encountering "Error moving component"
lazarus / 9-Editor

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craigTheBrit · 2007-12-07 15:28

Hi, I installed Lazarus for the first time yesterday and have been
busy converting my Delphi projects (the first thing to be converted
was me, and it didn't take long!).

I have a rather large home-made HTML control with all sorts of
properties that just won't work in the Lazarus IDE. It compiles fine
and installs fine, but once I drop it on to a form I get the error
"Error moving component". I've searched for this in these forums and
the web, but to no avail (if one searches for "error moving component"
on google you get one bizarre result...).

Any thoughts?

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gerardus · 2007-12-08 12:13

The error message is misleading.
This happens in  the form editor code,
(TCustomFormEditor.CreateComponent), after your component has been
created by the form designer, and during the component setup (coords,
parent, ...)
  It could be your component initialization relying on a default
property value wich hasn't been set, or some code that is executed in
a different order than in Delphi.

Regards,

Gerard.

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craigTheBrit · 2007-12-08 14:13

Thanks, you're right about the error - it was occurring in the first
Paint event due to that function not being able to determine the
component's width. Redrawing problems are the bane of my life at the
moment...