Hi List,
I''m trying to get my ListCtrl to work. Currently I''ve managed
to fill
my ListCtrl with items, but I think it''s not the most beautiful way:
class MyList < Wx::ListCtrl
def initialize(parent, *args)
super(parent, :style => Wx::LC_REPORT|LC_HRULES )
create_layout
fill_list
end
def create_layout
self.insert_column(0, "Name")
self.insert_column(1, "Code")
self.insert_column(2, "Desc")
self.set_column_width(0,80)
self.set_column_width(1,100)
self.set_column_width(2,150)
end
def fill_list
i=0
DataObject.find(:all).each do |data|
self.insert_item(i, data.name)
self.set_item(i,1,data.code)
self.set_item(i,2,data.description)
i = i + 1
end
end
I think it would be better to subclass Wx::ListItem and add instances
of this class to the List. Something like this (not tested):
class MyListItem < Wx::ListItem
def initialize(data_object, *args)
super(*args)
# here I need to add the column data, but I don''t know how
end
end
my_list.add_item(MyListItem.new(data_object))
But I have no idea how I can fill the columns in my ListItem-Object.
Any ideas how I can do this? I think it should work with
ListItem#set_data and/or ListItem#set_column but I don''t understand
the docs.
Regards,
Timo
hi timo Timo Springmann wrote: ...> I think it would be better to subclass Wx::ListItem and add instances > of this class to the List. Something like this (not tested): > > class MyListItem < Wx::ListItem > def initialize(data_object, *args) > super(*args) > # here I need to add the column data, but I don''t know how > end > end > > my_list.add_item(MyListItem.new(data_object)) > > But I have no idea how I can fill the columns in my ListItem-Object. > Any ideas how I can do this? I think it should work with > ListItem#set_data and/or ListItem#set_column but I don''t understand > the docs.Yes, the wxWidgets API for working with multiple columns is not so obvious. You do need to have one ListItem for every single cell - you can''t combine several columns of a single row into one. Have a look at this thread: http://rubyforge.org/pipermail/wxruby-users/2009-September/004955.html If you have an underlying data model eg linked to a RDBMS, it can be a lot tidier to use Wx::LISTCTRL_VIRTUAL, and supply a set of methods to populate the listctrl automatically. Take a look at the samples dir (there''s an example in sapmles/bigdemo I think). cheers alex
Hi Alex, Am 24.10.2009 um 13:01 schrieb Alex Fenton:> > Yes, the wxWidgets API for working with multiple columns is not so > obvious. You do need to have one ListItem for every single cell - > you can''t combine several columns of a single row into one. Have a > look at this thread:Because of the un-sortable VIRTUAL list style I took a deeper look into the normal ListCtrl. You wrote, that I need one ListItem for every single cell. After reading the docs I thought I understand how it works, but I still can''t get it to do what I want. I _thought_ the following code would create a ListCrtl with two columns populated with one line filling both columns with some text. But both items (item0 and item1) will put it''s text into the first cell (column 0). It seems like "self.set_column(0)" doesn''t do anything... any ideas? class MyList < Wx::ListCtrl def initialize() super(:style => Wx::LC_REPORT|Wx::LC_HRULES) self.insert_column(0, "Col1") self.insert_column(1, "Col2") self.set_column_width(0,280) self.set_column_width(1,300) add_entries end def add_entries item0 = Wx::ListItem.new item0.set_text("Some text for column 0") item0.set_column(0) item0.set_id(0) self.insert_item(item0) item1 = Wx::ListItem.new item1.set_text("Some other text for column 1") item1.set_column(1) item1.set_id(0) self.insert_item(item1) end end Regards, Timo P.S.: I know I could use self.insert_item and self.set_item in this case (and it would work), but later I would like to move the creatin of the list items to an own class.
Hi, this morning I tested my code on a Linux box. The result is a little bit different. On my linux box it seems, that the set_column call is working, but every "self.insert_item" is creating a new row, although both items should be in the same row (set_id is both times called with 0). I Just checked the versions: Mac OS: wxruby 2.0.1 Linux: wxruby 2.0.0 Seems like I''m trying something that should not work or there''s a bug in at least one wxruby version Regards, Timo
Hi, I did some more testing and I''m quite sure that there''s a bug in wx::ListCtrl and/or in wx::ListItem when using ListCtrl#insert_item to insert a ListItem into a List element. I attached the some sample code and two screenshot showing. The code should in my opinion create a 3x3 ListCtrl with every cell filled with some sample text. Screenshot #1 shows the result running the script in a linux box using wxruby 2.0.0 Screenshot #2 shows the result running the script in Mac OS X with wxruby 2.0.1 (same as with 2.0.0) Both result are not what I expected... Timo -------------- n?chster Teil -------------- Ein Dateianhang mit Bin?rdaten wurde abgetrennt... Dateiname : list_text.rb Dateityp : text/x-ruby-script Dateigr??e : 1964 bytes Beschreibung: nicht verf?gbar URL : <http://rubyforge.org/pipermail/wxruby-users/attachments/20091027/842ffa1f/attachment-0001.bin> -------------- n?chster Teil -------------- -------------- n?chster Teil -------------- Ein Dateianhang mit Bin?rdaten wurde abgetrennt... Dateiname : wxListCtrl.png Dateityp : image/png Dateigr??e : 9823 bytes Beschreibung: nicht verf?gbar URL : <http://rubyforge.org/pipermail/wxruby-users/attachments/20091027/842ffa1f/attachment-0002.png> -------------- n?chster Teil -------------- Ein Dateianhang mit Bin?rdaten wurde abgetrennt... Dateiname : Bild 1.png Dateityp : image/png Dateigr??e : 16520 bytes Beschreibung: nicht verf?gbar URL : <http://rubyforge.org/pipermail/wxruby-users/attachments/20091027/842ffa1f/attachment-0003.png>
Timo Springmann wrote:> I did some more testing and I''m quite sure that there''s a bug in > wx::ListCtrl and/or in wx::ListItem when using ListCtrl#insert_item to > insert a ListItem into a List element.This has tripped me up before. The wxWidgets default docs are not very clear, I will try to remember to update this evening. insert_item inserts a new row; use set_item to add subsequent columns to the same row: row00 = Wx::ListItem.new row00.set_text("Cell 0,0") # set text row00.set_id(0) # set row row00.set_column(0) # set column self.insert_item row00 row01 = Wx::ListItem.new row01.set_text("Cell 0,1") # set text row01.set_id(0) # set row row01.set_column(1) # set column # SET_ITEM here self.set_item row01 See: http://wiki.wxwidgets.org/WxListCtrl a
Hi Alex, Am 27.10.2009 um 16:12 schrieb Alex Fenton:> Timo Springmann wrote: >> I did some more testing and I''m quite sure that there''s a bug in >> wx::ListCtrl and/or in wx::ListItem when using ListCtrl#insert_item >> to insert a ListItem into a List element. > > This has tripped me up before. The wxWidgets default docs are not > very clear, I will try to remember to update this evening. > > insert_item inserts a new row; use set_item to add subsequent > columns to the same row:That did the trick. Actually you can use ListCtrl#set_item instead of ListCtrl#insert_item all the time. Even for the first column you can use set_item. That''s exactly what I was looking for. Thanks. Regards, Timo