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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Development’ Category

Excel XML Spreadsheet: Styles and formatting

Posted by jpluimers on 2011/08/25

I found some time to continue my series that started with Excel XML Spreadsheet: Date.Type is mandatory :)

This time, it is about Styles and using the styles to format. I’ll limit myself to formatting Columns, but you can equally apply this to individual Cells, Rows, and Tables.

Note that in the below XML listings, I have replaced the angle brackets with { and }, because the WordPress editor will otherwise delete the XML from the sourcecode portions.

First, let’s look at some ss:Styles:

 {Styles}
  {Style ss:ID="Default" ss:Name="Normal"}
   {Alignment ss:Vertical="Bottom"/}
  {/Style}
  {Style ss:ID="s21"}
   {NumberFormat ss:Format="yyyy/mm/dd"/}
  {/Style}
  {Style ss:ID="s22"}
   {NumberFormat ss:Format="yyyy/mm/dd\ h:mm:ss"/}
  {/Style}
  {Style ss:ID="s31"}
   {NumberFormat ss:Format="[ENG][$-409]ddd"/}
  {/Style}
  {Style ss:ID="s32"}
   {NumberFormat ss:Format="[$-F800]dddd\,\ mmmm\ dd\,\ yyyy"/}
  {/Style}
 {/Styles}

Then the usage of the styles in Columns:

   {Column ss:StyleID="s21" ss:Width="53.25"/}
   {Column ss:Index="4" ss:StyleID="s31" ss:Width="89.25"/}
   {Column ss:StyleID="s22" ss:Width="95.25"/}
   {Column ss:StyleID="s32" ss:Width="95.25"/}

First a few remarks about the ss:Styles:

  1. Styles have IDs, which don’t need to be in the form s##, you can use any unique ID for them. Excel uses s## because that’s how the formatting pick-list works.
  2. You specify the formatting as a ss:NumberFormat using the components from the Creating international number formats documentation.
  3. You can add an Excel specific LCID (locale identifier) to a format. Without it, it will use the user’s locale settings.
  4. You can ommit the language hint (like [ENG]) from the formatting.
  5. The Excel LCID is very similar to the LCID Structure using hexadecimal values from the (old now defunct Locale ID Chart and replaced by the new) Microsoft Locale ID Values,  Language Identifier Constants and Strings table or list of Locale IDs Assigned by Microsoft, but with a few twists.
  6. There is a lot of confusion about [$-F800] and [$-F400] which actually behaves as LANG_SYSTEM_DEFAULT (0x0800 in the latter table), where [$-F800] displays the long date and [$-F400] displays the time (as correctly identified in this Openoffice Bugzilla bug report – or the Google cache of it).
  7. Three digit language [$-409] should be extended to 4-digit LCID 0x0409. It will format the cell using that specific language (in this case: English 3-letter weekday abbreviation).

A few remarks about the ss:Columns:

  1. These columns define formatting for column A, D, E and F.
  2. You don’t need to have a definition for every column in your Worksheet.Table, just for the ones that need formatting.
  3. The Column definition is smart: it can be sparse! After each gap, define a column having an ss:Index attribute, then continue defining subsequent columns until you need another gap.
  4. You can ommit the ss:Width attribute: when empty, the column will auto-size

–jeroen

PS: Rob van Gelder posted a nice formula to show nice translations using Excel formatting.

Posted in Development, internatiolanization (i18n) and localization (l10), Software Development, XML, XML/XSD, XSD | Leave a Comment »

Batch file to get TCP/IP info from local LAN

Posted by jpluimers on 2011/08/24

I needed an automated way of inspecting the local LAN.

The batch files below will on IPv4 networks, with thanks to articles from Windows IT Pro and Rob van der Woude for some ideas:

  • find the TCP/IP gateways/netmasks
  • enumerate all the IP addresses on each subnet (assuming the netmask is 255.255.255.0)
  • ping each IP address and get ARP info, and dump that to the console

There are other tools that can do this too (like Angry IP Scanner), and more but the ones I tried could not copy the output to the clipboard.

find local subnets: Read the rest of this entry »

Posted in Batch-Files, CommandLine, Development, Power User, Scripting, Software Development | 4 Comments »

delphi has TTransparentCustomControl in the Controls unit

Posted by jpluimers on 2011/08/23

Wow, I never noticed that Delphi 2006 introduced the TTransparentCustomControl.

I spotted it a while ago from the delphi – Transparent TCustomControl? answer on StackOverflow.

It is not used in the Delphi VCL itself, but a google search reveals that a few people have actually used it, and Steve Trefethen (former member of the VCL team) mentioned it too.

Note that it contains a [WayBack] mouse interception bug that is still open.

–jeroen

Posted in Delphi, Development, QC, Software Development | Leave a Comment »

TypedReference Structure (System)

Posted by jpluimers on 2011/08/22

Somehow this landed on my research list: TypedReference Structure (System) (together with __arglist, __makeref, __reftype and __refvalue)

Probably because of two reasons:

A few interesting links:

–jeroen

Posted in .NET, C#, Development, Software Development | Leave a Comment »

ISO 8601 Date, Time and DateTime in Delphi (was: Simple example to show DateTime.Now in ISO 8601 format on ideone.com | Online C# Compiler & Debugging Tool)

Posted by jpluimers on 2011/08/18

In the past I wrote about a Simple example to show DateTime.Now in ISO 8601 format on ideone.com | Online C# Compiler & Debugging Tool , using ISO 8601 in batch-files, and how ISO 8601 is used in Google Calendar URLs.

Time to write something about ISO 8601 Date, Time and DateTime and Delphi.

First of all the DateUtils unit contains a bunch of routines (for instance DecodeDateWeek) that understand ISO 8601 week numbers, where:

  • Weeks start at Monday
  • The first week of a year contains (these are equivalent):
    • The first thursday in that year
    • Has at least 4 days in that year
    • Contains the 4th of January

Otherwise the week containing January 1st is week 52 or 53 of the previous year

ISO 8601 also specifies how to format Dates, Times,  DateTimes and durations according to some basic principles.

XML uses ISO 8601 to format Date, Time and DateTime and some other formats as text too.

So it is no wonder that since Delphi 6, it contains a XSBuiltIns unit covering (among other things) ISO 8601 formatting.

Given the many Delphi ISO 8601 relates questions on StackOverflow of which I answered two, and my need for ISO 8601 DateTime conversion for exporting Excel XML, here is are some samples to get started in the unit below (and in this codeplex changeset).

The unit covers Date, Time and DateTime.
You can write similar code for Duration.

Oops, I covered it already in ISO 8601: Delphi way to convert XML date and time to TDateTime and back (via: Stack Overflow)

Read the rest of this entry »

Posted in Conference Topics, Conferences, Delphi, Development, Event, ISO 8601, Power User, Software Development | 4 Comments »

some reflections on #Delphi #FireMonkey support for #iOS based on the #FPC compiler that caused quite a surprise

Posted by jpluimers on 2011/08/17

When looking over a few forums, it seems that the way Delphi XE2 will support FireMonkey on iOS (by using FPC aka the FreePascal Compiler) was very surprising, even for the FPC dev team.

Actually, Embarcadero’s Michael Swindell posted some very interesting reactions on the Lazarus forum and his series of comments on Jon Lennart Aasenden blog entry discussing Delphi XE2 and iOS.

Recommended reading!

A lot of pieces of the puzzle fall into place now: Embarcadero aquiring KSDev (that made DXScene/VXScene), and the support in FPC 2.5.1 for a more Delphi Language compatible syntax, and Objective Pascal binding to Objective C as indicated by Phil Hess. VGScene already supported iOS using FPC in Delphi Mode, as this thread on the embarcadero forums also indicates, so it is logical that FireMonkey does too.

Embarcadero, FreePascal and RemObjects are in parallel (and sometimes cooperation) working on cross platform compiler development.
For the Mobile world, ARM (for iOS) and Java (Android, BlackBerry) are very important.

Clearly, Borland was far ahead of its time when they demonstrated their dcc32j Delphi to Java bytecode compiler proof of concept at BorCon conferences back when their opening evenents had great videos (I think it was both at BorCon 1998 and BorCon 1997), and not so great shifts (the Inprise identity crisis).

The same holds for the Sun’s slogan “the network is the computer” (actually by John Gage): basically that was about predecessors of Cloud computing.

Things from the past come back, sometimes presented as “new”, a few (partially from this Evolution of Pascal programmers.stackexchange.com thread):

All of those are (partial repetitions) of technologies that help you build systems. The trick is how to be able to quickly learn and apply those technologies (as opposed to add a bunch of TLAs or FLABs wich are about the only thing that most modern “recruiters” use to match résumés/CVs to positions).

Some of the things above have died, or are not in wide use any more.
That is OK: Life can’t have ups without having downs, and without some form of long wavelength repetitions: that’s what makes the journey so interesting (just think about the financial markets, there will be good times…).

Using FPC for iOS opens the road to develop applications using a very productive environment consisting of the Delphi IDE and the FPC compiler in a short while from now.

–jeroen

PS: two more events that I will be attending and/or speaking:

PS2: Now it probably is more clear why I bought and installed my Mac Mini Server last year :)

Posted in .NET, C#, Delphi, Development, Java, Software Development | 6 Comments »

Revisited: .NET/C# – TEE filter that also runs on Windows (XP) Embedded « The Wiert Corner – irregular stream of Wiert stuff

Posted by jpluimers on 2011/08/16

More than a year ago, I wrote about .NET/C# – TEE filter that also runs on Windows (XP) Embedded.

Since then, I have made two changes to the code (which is below and in this CodePlex changeset):

  1. using file modes FileAccess.Write and FileShare.Read, which allows you to load the output files with tools opening them in a read-only, deny none mode
  2. optional flush of the files every CRLF pair, or every 4096 bytes

Read the rest of this entry »

Posted in .NET, C#, Development, Software Development | 2 Comments »

Back to the 80s: Apple Pascal on the Lisa Machine

Posted by jpluimers on 2011/08/15

Talking about Pascal history: Index of /pdf/apple/lisa/pascal_monitor.

That was then, soon it will become easy to write Pascal apps for Apple iOS using Delphi XE2 :)

–jeroen

Posted in BitSavers.org, Delphi, Development, History, Software Development | 2 Comments »

Tomazy’s Software Development Blog: Testing modal windows in Delphi

Posted by jpluimers on 2011/08/14

Tomazy’s Software Development Blog: Testing modal windows in Delphi.

Recommended reading!

–jeroen

Posted in Delphi, Development, Software Development | Leave a Comment »

Excel XML Spreadsheet: watch your Worksheet.Table.ExpandedColumnCount (or just leave it out)

Posted by jpluimers on 2011/08/11

Recently, I blogged about the Excel XML Spreadsheet: Date.Type is mandatory.

Here is another error you can get:

XML ERROR in Worksheet Setting
REASON:	Bad Value
FILE:	V:\CAS400\docs\statistics.cascall-logs\cascall.JU03HV.Bobbe, P.J.L. (Paul).20110620.xml
GROUP:	Worksheet
TAG:	Table
ATTRIB:	ExpandedColumnCount
VALUE:	9

This basically means your Worksheet.Table.ExpandedColumnCount is too small to hold your spreadsheet.

In other words: you either have more Worksheet.Table.Column definitions than ExpandedColumnCount, or you have a WorkSheet.Table.Row that has more WorkSheet.Table.Row.Cell entries than the ExpandedColumnCount.

In my case, I made an error generating too many Column definitions (by accidentaly duplicating some of them), and invalidated the ExpandedColumnCount.

Lesson learned: Since Excel will automatically calculate an absent ExpandedColumnCount, you can safely leave it out.

–jeroen

Posted in Development, Software Development, XML, XML/XSD, XSD | Leave a Comment »