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Articles from Eko Wahyudiharto Blog

Delphi: Integrating MyODBC Driver with Application 2008-02-10 18:59:00 As many programmers know, there are several ways connection link can be set up between MySQL database server & client application. One simplest way can be done through MyODBC, the ODBC driver for MySQL. Except for those who using Delphi native component such as dbExpress or from 3rd party component like Zeus or application built with Lazarus compiler, the application deployment within MyODBC driver would required 2 setup wizards. One for the application & one for the MyODBC setup. Somehow, - for me – it will decrease prestige & users manner since they will face some annoyed parameters within doing the 2nd setup of MyODBC wizard.Integrating MyODBC driver with application is another way & become my favorite trick when I did a client server project from Delphi. There are some reason why I still use ODBC & integrating it to the main program. First, I don’t even suspended with 3rd party component for expanding or future application release. All I need is only BDE & ...

Building Home Multimedia Center PC Based 2008-01-19 08:25:00 In less than a week, I try to figured out how to turn on my old rusted passed away Pentium III based PC I found on my warehouse. Got to revives & bring it to life as a semi-complete home multimedia machine. My PC was dead after a kind of “disaster” happened couple years ago. Lots of it’s component devices are totally inactive such as the 800MHz Intel Pentium III processor, Realtek Ethernet, 450W PSU, A-Open CD-RW drive & also the monitor. Somehow, comes an idea to revive it back & make it as a useful things: An entertainment box in a my own living room! Just for hear MP3 songs, watch DVD movies, storing pictures album & playing favorite games. Yeah, why not?Finally, I brought home the devices I needed after passing by & looking around on a very cheap computer flea market someplace in Jakarta. Now, my PC are back with still old-fashioned technology. A Pentium III 750MHz, 2x128MB SDRAM, 40GB IDE storage, PCI SoundBlaster sound card, 3Com PCI Ethernet card, ASUS ...

Earning Dollars from Google Ad sense (Again) 2008-01-18 01:13:00 After waiting months from it previous shipping, here comes again a check from Google. Somehow, I trust this business well than others existing internet marketing. However, not so much but it’s pretty enough to fill-up my wallet once in 2 months. I’m not dreaming about become a millionaire or become a pro Ad sense advisor but it’s a well-to-do business in my free times. You don’t have to know about web programming, economy or management skills & others flustered things such as SEO (Search Engine Optimization), CPC (Cost per Click), CTR (Click Through Rate), MW (Magic Words) or others freaky words. All you need is free internet time & creativity. In my case, what I have to do is just filling my several website with some purposes articles & wait for the dollars fall from the sky. Well, it’s a investment based on time. Don’t expect dollars will comes in a short days. Just pray & patient.This time, the check arrives within 2 weeks from the delivery date. It’s s ... Google

Memory Upgrade for TravelMate 6291 2008-01-07 22:28:00 By a chance, I’ve been tried to upgrade my own Travelmate 6291 laptop series from it’s standard 512MB memory size into 1GB. However, there is no difference performance happened significantly after using both of memory (2x512MB DDRAM) except a faster loading when more than 5 applications are loaded in a same time.Anyway, a new piece of 512MB PC2700 CL2 DDR has come with VISIPRO brand name. At first I doubt that the memory will compatible to the system but it did work fine. I recorded some of benchmark tests before & after the memory plugged onto the laptop with SiSoftware Sandra Standard just want to know the numeral result difference. And finally below here is the result (Memory Bandwith Benchmark, Cache & Memory Benchmark & CPU Multimedia Benchmark):Note that I’ve done the above test twice to make sure that the statistical result is more real. From the benchmark record, I can concluded that the additional amount of memory will increase the performance of multimedia a ...

Optimized MySQL Configuration File(?) 2007-12-26 21:55:00 After try & error with several parameters in my.cnf configuration file, finally below is my version of optimized file.[mysqld]datadir=/var/lib/mysqlsocket=/var/lib/mysql/mysql.sockold_passwords=1max_allowed_packet = 10M# tambahan optimisasiskip-lockingskip-innodbquery_cache_type=1query_cache_limit=1Mquery_cache_size=32Minteractive_timeout=100wait_timeout=15connect_timeout=10table_cache=512thread_cache=32key_buffer = 128Mlog_slow_queries=/var/log/mysqld.slow.loglong_query_time=2skip-host-cacheskip-name-resolve[mysql.server]user=mysqlbasedir=/var/lib[mysqld_safe]err-log=/var/log/mysqld.logpid-file=/var/run/mysqld/mysqld.pid# tambahan optimisasiopen_files_limit=8192[mysqldump]quickmax_allowed_packet=16M[mysql]no-auto-rehash[isamchk]key_buffer = 64Msort_buffer = 64Mread_buffer = 16Mwrite_buffer = 16M[mysqlhotcopy]interactive-timeout[client]socket=/var/lib/mysql/mysql.sockNote that the configuration above has tried on MySQL 4.xx. Comment regarding to this from the reader is needed. ...

About ActiveX Library on CrossOver 2007-12-10 00:52:00 When you use Windows emulator running on Linux such as Wine or CrossOver for the first time, perhaps you may seen a message box said that a Mozilla ActiveX browser object control has missing or not installed. This may occurs since the emulator engine could not find any library around the environment especially for the internet browser. Make sure that you have all the object required installed properly for the specified case or simply install Internet Explorer 6 to solve the problem as fast as possible. ...

How to Merging PDF Files? 2007-11-20 21:39:00 This article below purposed for those who still doesn’t know how to combining & merge multiple Postscript files into single PDF file from old-fashioned way ~ Distiller product from Adobe. If you in high-needed situation to create PDF from many source of document but there is no 3rd party software except an existing Adobe Distiller, you may need this trick.First of all, the very required thing is all the Postscript files you need to combine & Adobe Distiller installed properly in your machine. Locate all the .ps files into a specified folder (ex: file1.ps & file2.ps). Then, create a file contain the source below & named with any kind of name you want with .ps extension (ex: merge.ps). Store it in the same folder where the multiple source existed:/prun { /mysave save def dup = flush RunFile clear cleardictstack mysave restore} def% Change the path/to/filex depend on OS platform you used by(path/to/file1.ps) prun(path/to/file2.ps) prunUse the path ...

VirtualBox: Fedora Core 5 Guest with Windows XP Host on Macbook 2007-11-20 00:23:00 Recently, I got a loan from my friend a Macbook laptop with Windows XP installed already. Just a day chance to investigate what is beneath under a pure of Macintosh PowerPC architecture machine inside & no doubt… I was impressed. The shiny-white Macbook case has elegance looks, even with it’s 13” wide screen display. It has an Intel Core 2 Duo processor with 512MB of RAM & 60GB storage – it’s a standard tech spec of value notebook of the day. Anyway, I’d like to test the behaviors of the VirtualBox environment under Windows XP since it’s interesting me too much. The VirtualBox under Mac OSX article you can also find here.By the way, the dual boot Mac OS & Windows XP on her machine didn’t handled by other 3rd party software such as Parallel Desktop or Apple Bootcamp but natively an Option key pressed in a boot sequence which showing up the menu what OS will run - CMIIW. By then, It seems pretty difficult to understand why Apple machine doesn’t have an inte ...

File Transfer Between Mac OSX Host with Windows XP Guest in VirtualBox 2007-11-14 20:00:00 Until the latest version of VirtualBox (1.4.1) released for Mac, there are still no support for the Host Interface networking option enabled yet. Moreover, you even could not see the NIC card got working on Mac OSX running in some Intel Machine (Jas 10.4.8) since it didn’t recognized properly with the built-in driver. So, is there anyway to get a simple networking between both OS? Sure it does.FYI, file transfer in a Shared Folders option allow you to access files of your Mac OSX system from within the Windows XP guest system, much like ordinary shares on Windows networks would – except that shared folders do not need a networking setup. Sharing is accomplished using a special service on the host and a file system driver for the guest, both of which are – fortunately - provided by VirtualBox. In order to use this feature, the VirtualBox Guest Additions have to be installed in guest OS. Currently, Shared Folders are limited to Windows XP, Windows 2000 and Linux 2.4 and 2.6 guests. ...

Windows 98 Live CD 2007-11-13 18:49:00 Couple months ago, I’d write an article about how to create Windows XP live in a USB storage disk. Then someone asking me in existing blog comment whether is it possible to create a Windows 98 live CD? The answer is YES. I’m not sure for the legit of use, just pick Hiren boot CD to see that Windows 98 live CD or even Windows 3.11 live CD will boot for you.Search for Hiren application image from the website or from somewhere from the internet & burn it to a blank CD. Try the bootable CD & let it boot from the computer. Some built-in powertoys – a must have CD – are also available to give you a hand to fix some miscellaneous problem likes killing viruses, data life saver, returning administrator password for Windows XP & DOS based file manager similar to Norton Commander with NTFS support. All are available on a small CD!I got tested on my Travelmate laptop & it just working fine.Even the Windows 3.11 live CD are also booted greatly. What an awesome toolkit! ...

PowerBuilder & MySQL Problem: Tips & Tricks 2007-11-12 19:35:00 For a months, I’ve been included to join a latest research on a team about an application written from PowerBuilder & MySQL. After struggling hard with it, so many incompatibility found through out PowerBuilder 7 within MySQL 5 backend connection. I don’t have any idea why it’s happened since I though they both is a robust already application. I’d choose MySQL 5 since it has sub query features enabled whether than previous version which it so helping us a big hand to make a high-level query. I’ll describe some of the problems we had face:1. Error Resulted with Select Sum, Count, Max or Min QueryAt first, we’re confused with this since the query resulted an error. However, this could be solved by adding an option=135168 in dbparm string connection.ConnectString(e.g.,sqlca.dbparm="ConnectString='DSN=mysql;UID=root;PWD=123456;OPTION=135168',PBUseProcOwner="NO"")2. Error Resulted in Query Select Where on DataWindowFiltering record with select where query resulting trunca ... Amp

Phone with TV Function or TV with Phone Function? 2007-11-11 19:27:00 For some reasons, I was too attracted with this such of gadget: a hand phone with analog TV technology equipped. At first, I don’t even had a dream to buy a new cell phone again since I already has. But, I though it’s too worthless for me to have an iPod or something else similar multimedia gadgets with it’s near same price because they offering just the same old features: MP3 or MP4 with FM radio functionality. So, I decided to try pick this one TV with phone kit replacing my old multimedia box.A month ago, I just found 2 alternative brand name of it around me such as Hi-Tech H38 & MyG 678. Both supplied with analog TV feature in addition with its standard multimedia entertainment like 2 MPx camera, MP3, MP4, radio FM functionality, Bluetooth, touch screen feature & 256MB external miniSD storage. The Hi-Tech H38 has an odd keypad layout with its black dominant color surrounding to the case. Anyway, I prefer to buy MyG 678 product since it has a standard phone keypad layo ...

Configure Linux Wifi Manually (Part I) 2007-10-31 20:29:00 Setting up wireless networking on Linux is not so easy than Windows. In this first part article, I’d like to share about how to setting up wifi manually in LAN environment ~ eg: at office ~, at least it’s worked for me on my Acer Travelmate 6291 running Fedora 7. As we know, most of wireless LAN is configured more protected by the network administrator as they will not share the connection to everybody like public hot spot access area. The LAN wireless access line oftenly locked by some string parameters such as private key.First, let assumed that the wireless device has been setup correctly on your system (On my system, the wireless device using its native built-in driver from Fedora 7). Then, collect the wireless information completely from your local network administrator. These information including the wireless ESSID, the access point hexa-decimal address, the private key (password), the network topology wether the connection established in static or automatic (DHCP) & som ...

Go Outbound: Back To Nature 2007-10-01 01:02:00 What about if you get back to nature? When there is no technology exist, no internet, no laptop, no LINUX, even no cell phone around you for several days. Well, I was experienced this for my first time in 3 days (August 23 – 25). Located at Citarik (near Sukabumi), me & my IT department team (25 peoples) had been developed by Selaras Kaki Langit Adventures & had learned lots something new from there. Together, we learned how to co-operate, fast thinking, communicate & doing something positively on a team work. The main goal is to understanding what the leadership means. Finally, I realized that togetherness & self confident is important on a work group. Without well co-operation on it, no optimal output resulted.On the first day, we had playing around with water. Crossing a river full of holes & stones with rubber boat. Yes! Wade across the river with rafting. It’s so fun edging for about 5km long even the waters not too swiftly.On day 2 in the morning, we had ...

Testing Java on Mac OSX86 2007-09-22 02:28:00 One interesting thing I found after installing Mac (Intel) OSX86 was the availability of complete Java development package. The built-in Java resource has become an added value so that you don’t have to worry anymore to seek & find the Java package natively for your Mac.I tried to create a simple java source from text editor & would like to see the compile process & runtime result. The source below normally will displayed a “Hello Java…” string:class hello {public static void main(String[] args) {System.out.println(“Hello Java”); } }I then switch to terminal & make it compiled with javac compiler command::~/javac hello.javaLet the compiled source run & see the result below:It works fine. The apple system has proven that it also stands for Java development based application instead of others OS. A great work from Mac OS team developers. ...