Delphi Application Software 3,0/5 6446 reviews
Welcome to the Delphi Community. I'm John Kaster, in Borland Developer Relations.With Delphi, the choices are always yours: you're in control of a complete e-business development studio with the freedom to easily take your solutions to Windows, the.NET Framework, and cross-platform to Linux. Find out more about the Delphi Software Support Engineer role in Chicago at Atos. Senior Delphi Developer to support applications/programs responsible for. Delphi Application Support Transition Dunstan Thomas have completed the transition of support and development for applications written in Delphi and other technologies (including ASP.NET, Visual Basic, Java and VB.NET) for many clients and have an established and repeatable transition process.
Years ago I wrote a simple tool which is started instead of the real program, checks for updates, loads and installs them (if any are available), and finally starts the real application. There are however problems with that approach if your program works in a properly administered environment, where users normally don't have write access to the program directories. You can no longer simply update your own program in such environments.
That's why a lot of programs these days come with their own updater tool, which can be installed to run with elevated permissions, so that program updates can be applied even though only standard users do ever log on to the system. You have to decide whether your target audience can be assumed to run on power user or administrator accounts, or whether you will have to deal with above-mentioned problems. With Vista things got considerably harder already. With all these problems (net access over proxies, missing write permissions for installation directories, the need to update files that the updater itself is using - just to name a few) I wouldn't try again to code this on my own. Much better to check if any one of the available solutions does all you need it to. I use the routines GetHTTP to return a specific resource, and if found then check against the local system to see if an update is required.
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Delphi Programming Software
If so then the resource tells me what page to go to launch and I throw the URL into shell execute so the users preferred browser is displayed. Most of the time the download is a setup program created by InnoSetup which updates the users system and database to the latest version. When a new 'paid' upgrade is needed, I then send the user to a 'purchase upgrade' form. My web resources are ASP pages, so I can redirect to a different resource based on the customers version number. For the main application (our application has a server piece, and a client piece) I have a loader which will check the server to see if the version of the client file on the server is different than the version on the client.if so, it prompts the user if the user wants to update/revert. We chose to prompt the user as sometimes an accidental bug might make it into the system and the user has to downgrade/upgrade only specific machines to help troubleshoot. I maintain a database record with the minimum version required which is updated via the database patch, so if a version must be retired then the record is updated accordingly.
Delphi Application
We rolled our own as well. Its really not too difficult. Our process goes something like: • When the main app is launched, it checks (using funcs from the synapse library) if there's an update available (assuming its configured to check, of course). • If so, it notifies the user and askes if they want to update. • If they do, it launches an updater.exe, and closes the main app. • The updater exe downloads the new files based on the contents of a text file it retrieves, keepiing the files in memory.
Delphi Application Software
• When the updater is done downloading everything correctly, it then saves the downloaded files to disk, backing up any files it replaces. This way if the download gets interupted, you dont end up with half the files installed. • Finally, it launches the main app again, and closes itself. The trick w/ Vista is that you need to have an entry in the updater program's manifest to force it to run with administrator rights.
Delphi Computer Software
Same as 'stg' and 'GuyWithDogs', I'm using TWebUpdate from TMS. Although the documentation isn't so great, Its not so difficult to learnt. With TWebUpdate, you have some options what the protocol you use, it could be done via HTTP, FTP or network access. For communication layer, TWebUpdate uses WinInet.
In some machines, the windows / IE URL cache can be frustating, so I've added a routine to clear the auto-update server address from cache first to ensure the information gathered from the server is up-to-date. Pedro el escamoso novela dvd.
