Yes, that's right, I added two columns. But, I cannot put the data inside.

For example, i want to move the "title" data inside the "qwe" column, and the "author" data inside the "asd" column. This project is from the official demo.

Ok, i am using TBufSet and Indexes to sort data. But i can't find the way to simple concatenate columns. For example i need just a header in two columns. But when i try to do this, the data is always empty. (demo -> Lazarus -> Database -> ClientDataSet) screeen1.png In the default stringgrid, I can ...

Is it possible to sort and group data in TeeGrid in Lazarus? I have data with several thousand rows and a couple of dozen columns and I need to sort and group it by clicking the header. I tried to use different data providers, for example: - RTTI. Can't compile. Seems not supported in Lazarus. - DB....