cstrato writes: > > I would like to display a table and scroll through a > table in a TGFrame in a spreadsheet-like form. The size > of the table should be e.g. 100,000 rows and 500 columns. > > Is it possible to implement this? > Is it possible to use TGTableLayout for this purpose? As far as I know, there are no explicit limits on the table size a TGTableLayout can handle. Looking back over the code seems to confirm this. Although, it does need to know its table size at construction time which may not be desirable. I would worry more about the layout speed with that many cells. This code was largely stolen from Gtk+'s table widget which is intended more to layout GUIs of relatively few cells. Also of note, GtkTable was not chosen to layout the spreadsheat in Gnumeric, instead a custom widget was used. This may or may not be telling of some deficiency. I'd suggest just writting a little test code that adds a frame with a TGTableLayout into a TGCanvas. The TGCanvas provides the scrolling. Then fill the table with a bunch of other frames, maybe just buttons or labels and see how it works. If TGTableLayout is indeed too slow, you might try writing a simpler version which doesn't support cells spanning more than one row/column. Also, TGTableLayout optimizes the spacing, whereas spreadsheat table row/column sizes are usually forced by the user. Maybe TGMatrixLayout would be worth looking at? -Brett.
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