On 26/10/2010 6:59 PM, Mattias Gaertner wrote:
On Tue, 26 Oct 2010 17:17:00 +1100
John<[email protected]> wrote:
Can anyone enlighten me as to the likely cause(es) of a "TControl.InvalidatePreferredSize loop
detected" exception, and how one may debug it ? It is occurring in a frame, if that is
significant, and it is the frame that is specified in the exception. Looking at the code in
TControl.InvalidatePreferredSize, it would appear that the frame must not have a parent, but as it
is occurring in the form designer, it is difficult to debug. I think it may not be happening at
run time, but as it started happening at design time while I was in the middle of some
"structural changes", it is hard to get a lot of sense out of the program at run time.
Environment is WinXP SP3, fpc SVN 16114 Laz SVN 27864. (But it also occurred
on Laz SVN from a few weeks ago)
Do you use only standard LCL controls?
Mattias
The frame contains a TLabel, a TButtonPanel, a TBitBtn, a couple of
TRadioGroups, and some db Controls - TDBGrid, (with defined columns)
TDBNavigator, TDBMemo. I guess these are all considered standard ? I
don't think I have used any controls that didn't come with Lazarus in
the whole project.
thanks,
John Sunderland
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