Articles by Till Warweg
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Background
The XbpHtmlViewer2 class has a data folder that serves as an integral mechanism for session isolation. This feature is critical for applications using the class, which internally relies on the Microsoft WebView2 runtime. By ensuring that every process employing XbpHTMLViewer2...
The Asset Manager integrated into the Xbase++ Workbench provides an easy interface for viewing, (de-) installing and updating the assets being used in your projects. Behind the scene, the Asset Manager in conjunction with the Workbench, performs the following tasks for you:
Manage asset...
Using native SQL for manipulating data as well as structure (schema) of ISAM-emulated tables is a supported scenario, for example, for being able to share data with non-Xbase++ applications. In the following, the potential pitfalls and general requirements are discussed which must be put into...
Background
The PGDBE automatically tracks record locks in ISAM-emulated tables, which are set by clients connected to the PostgreSQL server. This is done with the help of the __lock_owner field in the table's meta data. However, when a client dies unexpectantly, has it's network go down or does...
Reg-free COM allows using a copy-deployment for applications depending on COM/ActiveX component. As the name implies, Reg-free COM means there's no need to register COM/ActiveX components prior to using them. To achieve this, the application requires one or more manifest files which describe the...
Background
Sometimes, an application may exhibit symptoms which are hard to understand without having information about the internal state, the workflow and timing of operations. This was not an issue with desktop applications as these basically follow the action->reaction principle. Anybody who...
Background
The Update Manager in the Xbase++ Workbench usually provides a seamless update experience; after clicking "Download and Install", the update process usually runs through without further user interaction. However like all processes, it can fail. This article provides some background...
In a std I/O application, output occurs to the current console. The font used for outputting text into the associated window is controlled by the system and can be changed via the console properties.
The following function can be used to determine the size of the font set for the window...
Background
Starting with version 13 of PostgreSQL, the default authentication method was changed from MD5 to SCRAM. This authentication method is incompatible with the pqlib client dll used by the PostgreSQL Database Engine shipping with Xbase++ (status: build 1360). As a consequence, attempting...