Delphi 7
Release Notes
=======================================================
This file contains important supplementary and late-
breaking information that may not appear in the main
product documentation. We recommend that you read this
file in its entirety.
For information on new features in this release, choose
"What's New" in the online Help contents.
CONTENTS
* OTHER RELEASE NOTES INCLUDED WITH THIS PRODUCT
* NOTES AND ISSUES:
* ABOUT EDITING THE REGISTRY
* PRODUCT INFORMATION ON THE WEB
OTHER RELEASE NOTES INCLUDED WITH THIS PRODUCT
* INSTALL contains system requirements and product
installation information.
* DEPLOY contains information about redistributing your
applications.
* LICENSE contains information on licensing allowances
and limitations for this product and other Borland
software that is bundled with it.
The three files listed above, along with this file,
are installed in your main product directory
(default: C:\Program Files\Borland\Delphi7).
NOTES AND ISSUES
Deprecated Components
Borland is deprecating the use of TSQLClientDataSet
and TBDEClientDataSet. Borland recommends that you
use TSimpleDataSet for simple, two-tier
applications. TSQLClientDataSet and
TBDEClientDataSet are no longer displayed on the
Component palette. If you require backward
compatibility, you can still access
TSQLClientDataSet and TBDEClientDataSet in the
Demos directory (by default, C:\Program
Files\Borland\Delphi7\Demos).
Borland is deprecating the use of the TServerSocket
and TClientSocket from the unit ScktComp. It is
recommended that you use the Indy components for
socket operations. The TServerSocket and
TClientSocket will no longer be installed on the
component palette by default. If you require the
use of these components then you can install
the design time package named dclsockets70.bpl,
found in your bin directory. For deployment with
runtime packages, you will need to deploy rtl70.bpl
and any other required packages.
Changes in StrUtils
-------------------
The StrUtils unit contains three sets of changes, all
relating to
multi-byte character set (MBCS) support.
* Previously, LeftStr, RightStr, and MidStr each
took and returned AnsiString values, and did not
support MBCS strings. Each of these functions has
been replaced by a pair of overloaded functions,
one that takes and returns AnsiString, and one
that takes and returns WideString. The new
functions correctly handle MBCS strings. This
change breaks code that uses these functions to
store and retrieve byte values in AnsiStrings.
Such code should use the new byte-level functions
described below.
* New functions LeftBStr, RightBStr, and MidBStr
provide the byte-level manipulation previously
provided by LeftStr, RightStr, and MidStr.
* New functions AnsiLeftStr, AnsiRightStr, and
AnsiMidStr are the same as the new AnsiStr
LeftStr, RightStr, and MidStr functions, except
that they are not overloaded with equivalent
WideString functions.
XP Themes
---------
This build does not include a manifest for your
projects. To tell your applications to use version 6.0
of comctl32.dll you need to create and edit the
manifest yourself.
There are two ways to do this:
1. With a stand-alone manifest file added to the same
directory of the executable.
2. With a manifest included in the executable as a
resource.
For the stand-alone manifest follow these steps:
I) Using Notepad create a file called
"Project1.exe.manifest" and add the following lines:
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1"
manifestVersion="1.0">
<assemblyIdentity
processorArchitecture="*"
version="1.0.0.0"
type="win32"
name="Project1"/>
<description>Project1 Description</description>
<dependency>
<dependentAssembly>
name="Microsoft.Windows.Common-Controls"
version="6.0.0.0"
publicKeyToken="6595b64144ccf1df"
language="*"
processorArchitecture="*" />
</dependentAssembly>
</dependency>
</assembly>
II) Save the file and place it in the same directory as
the application executable.
If you don't like the idea of having the manifest as a
separated file you can include it into your executable
as a resource.
I) Create a resource file (again using Notepad)
containing the following line:
1 24 "Project1.exe.Manifest"
II) Compile the resource file with brcc32.exe with the
following command:
C:\Project1> brcc32 WindowsXP.RC
III) Now add the following line to your project's main
form:
{$R WindowsXP.RES}
NOTE: To automatically configure XP Themes in your
project you can use the XP Application Wizard
demo. For more information see the readme file in
Demos\ToolsAPI\XPAppWiz
.NET compiler warnings
----------------------
The Delphi 7 dcc32 compiler now supports three
additional compiler warnings: Unsafe_Type,
Unsafe_Code, and Unsafe_Cast. These warnings are
disabled by default, but can be enabled with source
code compiler directives {$WARN UNSAFE_CODE ON},
compiler command line switches (dcc32 -W+UNSAFE_CODE),
and in Project|Options.
NOTE: There is no space before or after the "+" in the
command line switch)
"Unsafe" in all three messages refers to types or
operations which static code analysis cannot prove to
not overwrite memory. For example, data types that
carry bounds information at runtime such as Delphi
Strings or dynamic arrays can be bounds-checked at
runtime, and tracked in static analysis, to ensure that
memory accesses are within the limits of the allocated
data. Data types that do not carry bounds information
at compile time or runtime (such as PChar) cannot be
proven safe. Unsafe doesn't necessarily mean the code
is broken or flawed, it simply means that it uses
programming techniques that cannot be verified as safe
by static code analysis. In a secured execution
environment such as .NET, such code is assumed to be
unsafe and a potential security risk.
Delphi 7 developers can use these new warnings to
identify data types, code or programming techniques
that may be difficult to port to a managed code
environment such as .NET. These messages are not
specific to the .NET platform. The warnings are
conservative - some things we warn about in D7 we might
actually be able to support in Delphi for .NET, but
we're not sure yet. The warnings are not complete -
there may be problematic types or code situations for
which the Delphi 7 compiler does not issue an unsafe
warning.
Unsafe_Type: Types such as PChar, untyped pointer,
untyped var and out parameters, file of <type>, 6 byte
reals (Real48), variant records (records containing
overlapping fields) and old-style objects
("TMyObject = object").
* "old" object type
c = object
i: Integer;
procedure p;
end;
Unsafe_Code: absolute variables, Addr(), Ptr(), Hi(),
Lo(), Swap() standard procedures, BlockRead and
BlockWrite, the Fail() standard procedure, GetMem(),
FreeMem(), and ReallocMem()
* inline assembler blocks (asm end)
* @ operator
* modifying string index elements, e.g
s := 'Hoho';
s[2] := 'a'; // <-- "Unsafe code 'String index to
var param'"
Unsafe_Cast: Casting an object instance to a type that
is not an ancestor or descendent of the instance type,
casting a record type to anything else
Change to VCL SubComponents streaming
-------------------------------------
In Delphi 7, we corrected a problem where the csLoading
flag was never set for subcomponents, nor was the
subcomponent's Loaded method called. When a component that
has subcomponents is streamed, the subcomponents will have
their csLoading flag set and their Loaded method called.
This change creates a complication for any subcomponent
properties that are writable. If you allow your
subcomponent property to be assigned to an external
component reference then you cannot free your subcomponent
until it's owner's Loaded method is called otherwise the
streaming system will attempt to call the subcomponent's
Loaded method after the subcomponent has been freed.
Apache
------
Support for Apache 2 is for the 2.0.39 version. It will
work with later versions as long as they are binary
compatible.
NOTE: Due to a known bug with Apache 1.3.22, do not
develop CGI programs or shared objects for this
version.
See http://bugs.apache.org/index.cgi/full/8538
UDDI Registry entries
---------------------
Some UDDI Registry entries contain an Accesspoint URL with
a bookmark tag at the end. When accessed these services
often generate the error message 'Method not allowed
(405)'.
Workaround:
Remove the tag from url in the global function
that returns the Interface:
const
// defURL = 'http://someservice/somewhere#tag';
// is changed to
defURL = 'http://someservice/somewhere';
Japanese Input system on Windows XP
-----------------------------------
The MS IME2002 Japanese input system included with
Windows XP can cause the Debugger in the IDE to
stall.
Remove Microsoft IME Character Code Dictionary from
your system dictionaries list. Simply un-checking this
option from the dictionary list will not solve the
problem. To remove this dictionary:
1) Open the IME Toolbar.
2) Select Tools|Properties and click on the Dictionary
tab.
3) Select "Microsoft IME Character Code Dictionary"
from the System dictionaries listbox
4) Click Remove.
Database
--------
* The provided DB2 driver is certified for DB2 version
7 only. The client version and server version must
match. BDE also supports DB2 version 7 only.
* The Oracle driver provided for dbExpress components
is certified for Oracle 9i. BDE and ADO have been
certified with Oracle 8.1.7 and 8.1.6. In all cases,
the client version and server version must be the
same.
* Oracle 9i types - ORACLE 9i types TIMESTAMP
(introduced for JDK 1.3.1 compliance) and other types
like XMLType, Temp tables, etc. are not yet
supported. Use "DATE" instead.
* The Borland Database Engine CAB file (BDEINST.CAB) is
no longer digitally signed. This CAB file is provided
for backward compatibility. For new applications, we
recommend deploying BDE with the BDE merge modules.
InterBase version support, Dialect 3 features
---------------------------------------------
Delphi 7 supports InterBase 6.5. The client version and
server version must be the same.
Currently, the driver does not support the ARRAY type.
To use the new InterBase 6.5 Dialect 3 features in BDE,
add an entry to your Windows registry under
HKEY_LOCAL_MACHINE\SOFTWARE\Borland\Database Engine
\Settings\Drivers\Intrbase\Db Open\SQLDIALECT
and set the String Value to "3".
When an InterBase alias is created, the new entry will
be available in the .CFG file.
To use InterBase 5.6, SQLDIALECT can be set to "1"
(existing IB aliases which do not have the SQLDIALECT
entry default to SQLDIALECT=1 or to the registry
setting when the SQLDIALECT entry is added to the
registry).
InterBase 6.5 implementation note
---------------------------------
If you are using a WebSnap application with InterBase
6.5, a local database connection is not recommended.
Instead, use a client/server connection specified by a
protocol-specific prefix to the path to the database.
Examples:
Local connection (not recommended):
C:\PathTo\Database\DBName.gdb
TCP/IP connection on Windows:
saturn:C:\PathTo\Database\DBName.gdb
TCP/IP connection on UNIX:
jupiter:/usr/PathTo/Database/DBName.gdb
NetBEUI connection:
\\venus\C:\PathTo\Database\DBName.gdb
IPX/SPX connection:
mars@vol2:\PathTo\Database\DBName.gdb
If the WebSnap application is on the same machine as
...
umts