OK, as promised here is a very basic example of a three column treeview:
import gintro/[glib, gobject, gtk]
import gintro/gio except ListStore
const GroceryList = [(true, 1, "Paper Towels"), (true, 2, "Bread"),
(false, 1, "Butter"), (true, 1, "Milk"), (false,
3, "Chips"),
(true, 4, "Soda")]
## Add three columns to the GtkTreeView. All three of the columns will be
## displayed as text, although one is a gboolean value and another is an
integer.
proc setupTreeView(treeview: TreeView) =
var renderer: CellRendererText
var column: TreeViewColumn
## Create a new GtkCellRendererText, add it to the tree view column and
## append the column to the tree view.
for i, t in ["Buy", "Count", "Product"]:
renderer = newCellRendererText()
column = newTreeViewColumn()
column.title = t
column.packStart(renderer, true)
column.addAttribute(renderer, "text", i)
discard treeview.appendColumn(column)
proc appActivate(app: Application) =
let window = newApplicationWindow(app)
window.title = "Grocery List"
window.borderWidth = 10
window.position = WindowPosition.center
window.setSizeRequest(250, 175)
let treeview = newTreeView()
setupTreeView(treeview)
## Create a new tree model with three columns, as string, gint and guint.
## store = gtk_list_store_new(, G_TYPE_BOOLEAN, G_TYPE_INT, G_TYPE_STRING)
var h = [typeFromName("gboolean"), typeFromName("gint"),
typeFromName("gchararray")]
let store = newListStore(3, cast[pointer]( unsafeaddr h)) # cast due to
bug in gtk.nim
## Add all of the products to the GtkListStore.
for el in GroceryList:
var val: Value
var iter: TreeIter
var gtype: GType
let buy = el[0]
let quantity = el[1]
let product = el[2]
store.append(iter)
gtype = typeFromName("gboolean")
discard gValueInit(val, gtype)
setBoolean(val, buy)
store.setValue(iter, 0, val)
gtype = typeFromName("gint")
val.unset
discard gValueInit(val, gtype)
setint(val, quantity)
store.setValue(iter, 1, val)
gtype = typeFromName("gchararray")
val.unset
discard gValueInit(val, gtype)
setString(val, product)
store.setValue(iter, 2, val)
let scrolled_win = newScrolledWindow()
scrolled_win.setPolicy(PolicyType.automatic, PolicyType.automatic)
scrolled_win.add(treeview)
window.add(scrolled_win)
treeview.setModel(store)
showAll(window)
proc main =
let app = newApplication("org.gtk.example")
connect(app, "activate", appActivate)
discard run(app)
main()
Run
I took an old C example from the old GTK2 book of Andrew Krause, applied c2nim,
mixed it with the other listview example, and fixed the rest. The ugly cast is
still present, I have not touched gintro package yet, sorry.
Of course this example does only display the three columns, there is no code
for modifying it yet. But adding that should be not that hard, as seen from the
first example.
I noticed that you asked AT THE SAME Time at stackoverflow. Some consider that
a bad habit, maybe you can at least link that one to this forum thread.
