TeeChart is a Charting Components Library that helps to improve developer productivity to create rich and highly qualified charts. Steema Software was founded in 1996 and has been the authoring, distributing and supporting software component libraries for developers, mainly the charting library named TeeChart. Steema’s TeeChart component libraries are used across a wide variety of […]
Tag: vcl
Big files: XML or JSON ? TeeBI !!
Introduction XML and JSON are very typical text formats used to store data, designed to be more comfortable than plain old “csv” text and allowing hierarchical (parent -> child) relationships. However, even if there are many wonderful standard libraries to process them, there is still a speed problem when loading big quantities of data (say, […]
TeeBI teaser
Small teaser of TeeBI. This is the custom web server calculating a query and returning a chart. The only dependencies are TeeChart and Indy http web server component. Data is in column-oriented, memory-based custom format for speed reasons, no database or FireDac, etc are necessary. Data is imported from many sources (excel, text files, firedac […]
Reaching the browser page with TeeChart
How different versions of TeeChart reach the browser page Recent news that Microsoft are ceasing support for ActiveX with the new navigator, Edge, included with Windows 10, seems to signal the end of mainstream browser support for ActiveX. ActiveX support was one of the flagship functionality elements for Internet Explorer some years ago but security […]
TeeChart and GDI+ inside a DLL
TeeChart VCL controls use GDI+ (Windows graphics library) by default in VCL applications. NOTE: The fix indicated below has been already included in the latest VCL version: 2014.11.140512 Download link There is a “problem” with GDI+ when using it inside a DLL. GDI+ needs to be initialized before using it, and the […]