Delphi Windows Service

1. Delphi Windows Service Use Com Object

Creating a Windows service in Delphi Walk through the details of developing a Windows service using Delphi. This tutorial not only includes the code for a sample service, it also explains how to register the service with Windows. In this tutorial I'm going to discuss steps needed to implement DataSnap server using Delphi as “Windows Service”. This is not a very frequently used feature in.

How to: Debug Windows Service Applications. 4 minutes to read. Contributors. In this article A service must be run from within the context of the Services Control Manager rather than from within Visual Studio. For this reason, debugging a service is not as straightforward as debugging other Visual Studio application types. To debug a service, you must start the service and then attach a debugger to the process in which it is running.

You can then debug your application by using all of the standard debugging functionality of Visual Studio. Caution You should not attach to a process unless you know what the process is and understand the consequences of attaching to and possibly killing that process. For example, if you attach to the WinLogon process and then stop debugging, the system will halt because it can’t operate without WinLogon. You can attach the debugger only to a running service. The attachment process interrupts the current functioning of your service; it doesn’t actually stop or pause the service's processing.

That is, if your service is running when you begin debugging, it is still technically in the Started state as you debug it, but its processing has been suspended. After attaching to the process, you can set breakpoints and use these to debug your code.

Once you exit the dialog box you use to attach to the process, you are effectively in debug mode. You can use the Services Control Manager to start, stop, pause and continue your service, thus hitting the breakpoints you've set. You can later remove this dummy service after debugging is successful. This article covers debugging a service that's running on the local computer, but you can also debug Windows Services that are running on a remote computer. Warning To get meaningful information for debugging, the Visual Studio debugger needs to find symbol files for the binaries that are being debugged. If you are debugging a service that you built in Visual Studio, the symbol files (.pdb files) are in the same folder as the executable or library, and the debugger loads them automatically. If you are debugging a service that you didn't build, you should first find symbols for the service and make sure they can be found by the debugger.

Delphi Windows Service Use Com Object

If you're debugging a system process or want to have symbols for system calls in your services, you should add the Microsoft Symbol Servers. To debug a service. Build your service in the Debug configuration. Install your service. For more information, see. Start your service, either from Services Control Manager, Server Explorer, or from code.

For more information, see. Start Visual Studio with administrative credentials so you can attach to system processes. (Optional) On the Visual Studio menu bar, choose Tools, Options. New karate kid cast now.

In the Options dialog box, choose Debugging, Symbols, select the Microsoft Symbol Servers check box, and then choose the OK button. On the menu bar, choose Attach to Process from the Debug or Tools menu. (Keyboard: Ctrl+Alt+P) The Processes dialog box appears. Select the Show processes from all users check box. In the Available Processes section, choose the process for your service, and then choose Attach.