[DUG] Delphi 2006 Listview problem

[John Bird]

This may be a red herring - but are you using the Win Xp themes component?,
because if using this it uses a different version of the standard Win
controls, and I read somewhere (cannot find the reference - might have been
Zarko on Delphi.About.com) that the only component where there was a known
Delphi VCL problem in compatibility was with ListView.

If so you could try turning of the Win Xp themes and see if it behaves?

Related - I noticed that some effects (Alphablend) had to be turned off for
Windows 2003 TS as they do not support the later versions of the controls
and some of the XP effects.... Even though the Windows version number is 5.2
(XP is 5.1)

John


-----Original Message-----
From: delphi-bounces at ns3.123.co.nz [mailto:delphi-bounces at ns3.123.co.nz] On
Behalf Of Colin Fraser
Sent: Monday, 13 March 2006 12:23 p.m.
To: 'NZ Borland Developers Group - Delphi List'
Subject: [DUG] Delphi 2006 Listview problem


Hi all,

Not sure if I would call it a bug or an 'added feature', but lots of our
list views in Delphi 2006 now have a problem as follows:

Many columns have been set to width '-2' at design time and runtime (or
ColumnHeaderWidth), which at run time, expands to the width of the
column/data in the column.

In Delphi 2006, when setting -2 it instantly sets the width of the column to
match the design time column width. When changing the column header or
adding list view items, the column header remains the same size as it did at
design time... which is usually way to small, and is different behaviour to
Delphi 2005.

Digging further, it appears that READING the Width property of a column
actually changes behaviour of the code... don't read the width, and the
column sizes correctly, read the width, and the column incorrectly sizes...
seems they added some code to the list view column get width function!!

Not sure if anyone has come across this, or has any quick solutions (other
than adding in 'Width := ColumnHeaderWidth' in all the hundreds of places
that would need it... :-))

Regards,
Colin


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