On May 14, 2007, at 11:48 UTC, Marc (aliacta.com) wrote: > PS: my take on features needed for the next ListBox, as discussed > several years ago on the NUG, is still: keep the current ListBox, > add a new control that is a minimalist frame on which anybody can > build what he wants. Something that simply provides flexible row > heights and column widths, horizontal and vertical scrolling, styled > cell contents, possibly with the ability to embed any control in a > cell.
I can certainly imagine something that relies entirely on the equivalent of CellBackgroundPaint and CellTextPaint for its content, but also supports variable row heights, merging of cells, and maybe even freezing of N top rows and M left columns. Would we also require the ability to freeze some bottom rows and rightmost columns? As for embedding of controls in a cell -- that one is really hard, especially cross-platform. I understand why you want it sometimes; it's just quite difficult to do. Still, if it's important, and effort were put in to enabling it from the very beginning, it could be doable for at least most controls. While we're at it, let's define more selection types: 0 - no selection allowed at all 1 - single row 2 - multiple rows 3 - single column 4 - multiple columns 5 - single cell 6 - any contiguous block of cells 7 - discontiguous (arbitrary) cells > How it behaves, e.g. how it scrolls or populates itself, would > be for each one of us to implement. Controlling scrolling can be complex, since it goes both ways (e.g. the user may scroll the content using the scrollbar, or by using the arrow keys once a selection is established, or even while drag-selecting with the mouse). So I think you'd want this relationship between the content and the scrollbars to be managed by the grid control. However, I can certainly imagine the scrollbars being separate controls, so that you can size and position them however you like. What do you think? I'm pushing on this because, to be frank, I'm so tired of the whining about it that if we can agree on a reasonable spec, I'll consider writing the dang thing and publishing it as open source. Best, - Joe -- Joe Strout -- [EMAIL PROTECTED] Strout Custom Solutions _______________________________________________ Unsubscribe or switch delivery mode: <http://www.realsoftware.com/support/listmanager/> Search the archives: <http://support.realsoftware.com/listarchives/lists.html>
