On Mon, May 9, 2011 at 19:51, Juha (gmail) <[email protected]> wrote: > I almost always want my StringGrids to sort automatically when user clicks a > column title. > So, I implemeted such feature as property ColumnClickSorts (r30630 + some > others for images). > Jesus Reyes and others, please test. > > Some notes: > - I created sort glyph images using my artistic skills and Gimp... > ... ok, I just rotated an existing image 90 decrees. > I would be happy if someone creates / finds better images. > > - ImageList is created "on the fly" if not set by user. > The sort glyphs and loaded dynamically in any case. > The only potential error comes when user first clicks the columns, ImageList > gets created, and later user's code assigns another ImageList. It wouldn't > crash but wrong images would be shown. I think this is very rare and can > easily be avoided, so it is not a real problem.
When I implemented title images a few years ago, I did it exactly it to allow column sorting indicators. However, I stopped before hard-coding sorting images into the StringGrid because I did not see an elegant way to do it -- in other words, I specifically wanted to avoid your kind of implementation. Perhaps I was wrong -- a crude functionality is better than none, just wanted you to know. > - Sorting works for all columns but the glyphs are shown only for persistent, > user defined columns. It is so by definition. If you want to see images you > must > define columns. See http://bugs.freepascal.org/view.php?id=12823 > - Column.Title.ImageIndex is now -1 by default. Value 0 as default is wrong > because it is a valid list index. Agreed, it was a mistake. -- Alexander S. Klenin -- _______________________________________________ Lazarus mailing list [email protected] http://lists.lazarus.freepascal.org/mailman/listinfo/lazarus
