On Mon, 8 Dec 2008 16:03:37 -0200 "Felipe Monteiro de Carvalho" <[EMAIL PROTECTED]> wrote:
> Hello, > > I am trying to implement TShellTreeView. It is a treeview which shows > the directory structure in the prefered way of the operating system. > In Windows that would start with My Computer, etc... > > One problem now is with the design. Should it read all existing > directories (which will cause a delay) or only those visible, or one > or two levels at once... what do you think? Reading everything may be > problematic with removable media. Very problematic. Especially with the linux automounting. The best would be using a separate thread and only check the visible files. > Another problem is using TTreeView. I searched by I can't find how I > would implement this behavior, for example, having the root and 1 > level visible and then when the user clicks the + symbol the subitems > for this item are loaded. Should I use the OnExpanding event? In the > event handler I would create the subitems? A tutorial would be > great... You already figured it out. OnExpanding and OnCollapsing are the events. Feel free to start a tutorial. See as example: ide/unitdependencies.pas TUnitDependenciesView.UnitTreeViewExpanding Mattias _______________________________________________ Lazarus mailing list [email protected] http://www.lazarus.freepascal.org/mailman/listinfo/lazarus
