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Dark Byte Site Admin
Reputation: 468
Joined: 09 May 2003 Posts: 25719 Location: The netherlands
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Posted: Thu Jul 07, 2011 3:47 pm Post subject: Using a listview (object with columns) and setProperty |
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a listview is an object that will usually be used for display data ordered in columns (depending on the viewstyle)
Also, sometimes a component has properties you want to access but they are only available to the designer. If for some reason you do not wish to use the designer, but do want access to those properties, you can use the setProperty function.
In this example I use it to access 3 properties not exported specifically to the lua script engine
This example creates a listview with 3 columns and 3 rows
This is just a blunt example, the variable usage can be done a lot smarter, but just showing the easy way for starters
warning: this code is obsolete
Code: |
f=createForm()
lv=createListView(f)
setProperty(lv, 'ViewStyle', 'vsReport') --non lua exported property but you can access it with this
setProperty(lv, 'RowSelect', 'True')
setProperty(lv, 'ReadOnly', 'True')
lvc=listview_getColumns(lv)
column1=listcolumns_add(lvc)
column2=listcolumns_add(lvc)
column3=listcolumns_add(lvc)
listcolumn_setCaption(column1, 'a')
listcolumn_setCaption(column2, 'b')
listcolumn_setCaption(column3, 'c')
lvi=listview_getItems(lv);
row1=listitems_add(lvi)
listitem_setCaption(row1, 'Row 1'); --rw 1 column a
row1_subitems=listitem_getSubItems(row1) --returns a Strings object
strings_add(row1_subitems, 'r1_cb') --row 1 column b
strings_add(row1_subitems, 'r1_cc') --row 1 column c
row2=listitems_add(lvi)
listitem_setCaption(row2, 'Row 2');
row2_subitems=listitem_getSubItems(row2)
strings_add(row2_subitems, 'r2_cb')
strings_add(row2_subitems, 'r2_cc')
row3=listitems_add(lvi)
listitem_setCaption(row3, 'Row 3');
row3_subitems=listitem_getSubItems(row3)
strings_add(row3_subitems, 'r3_cb')
strings_add(row3_subitems, 'r3_cc')
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Last edited by Dark Byte on Tue Jun 11, 2024 11:14 pm; edited 1 time in total |
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happyreadygo Advanced Cheater
Reputation: 1
Joined: 14 Sep 2011 Posts: 87
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Posted: Fri Sep 28, 2012 4:41 am Post subject: |
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I am new to listview .
this code from your example.
Code: | lvi=listview_getItems(lv);
row1=listitems_add(lvi)
listitem_setCaption(row1, 'Row 1'); --rw 1 column a
row1_subitems=listitem_getSubItems(row1) --returns a Strings object
strings_add(row1_subitems, 'r1_cb') --row 1 column b
strings_add(row1_subitems, 'r1_cc') --row 1 column c |
why this code is not like this?
Code: | lvi=listview_getItems(lv);
row1=listitems_add(lvi)
row1_subitems=listitem_getSubItems(row1) --returns a Strings object
strings_add(row1_subitems, 'Row 1') --row 1 column a
strings_add(row1_subitems, 'r1_cb') --row 1 column b
strings_add(row1_subitems, 'r1_cc') --row 1 column c
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The ladder seems more understandable for me , or I misunderstand anything ?
ps. how to set listview to display fit to the form , as it now , Only show 5.5 lines of row.
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atom0s Moderator
Reputation: 204
Joined: 25 Jan 2006 Posts: 8581 Location: 127.0.0.1
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Posted: Sat Sep 29, 2012 8:28 am Post subject: |
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When adding items like this, think of the first column in the row as the parent. The caption of the first parent is different from the sub-items within the same row. You set the parents caption, then add sub-items to it as a string list.
You can adjust the width and height to the forms using:
Code: |
local w,h = control_getSize( f );
control_setSize( lv, w, h );
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happyreadygo Advanced Cheater
Reputation: 1
Joined: 14 Sep 2011 Posts: 87
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Posted: Sat Sep 29, 2012 9:12 am Post subject: |
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Thank you
Wiccaan wrote: | When adding items like this, think of the first column in the row as the parent.
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I try to think like that.
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AylinCE Grandmaster Cheater Supreme
Reputation: 36
Joined: 16 Feb 2017 Posts: 1499
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Posted: Tue Jun 11, 2024 9:14 pm Post subject: |
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Usage example created from archives;
Code: |
if f2 then f2.Destroy() end
f2=createForm()
f2.Height=270
lv=createListView(f2)
setProperty(lv, 'ViewStyle', 'vsReport') --non lua exported property but you can access it with this
setProperty(lv, 'RowSelect', 'True')
setProperty(lv, 'ReadOnly', 'True')
lvc=listview_getColumns(lv)
column1=listcolumns_add(lvc)
column2=listcolumns_add(lvc)
column3=listcolumns_add(lvc)
listcolumn_setCaption(column1, 'Desc')
listcolumn_setCaption(column2, 'Address')
listcolumn_setCaption(column3, 'Value')
column1.Width=45
column2.Width=90
column3.Width=85
l1=createLabel(f2)
l1.Left=30 l1.Top=160
l2=createLabel(f2)
l2.Left=30 l2.Top=180
e1=createEdit(f2)
e1.Left=30 e1.Top=200
b1=createButton(f2)
b1.Left=120 b1.Top=199
b1.Caption="Enable"
b2=createButton(f2)
b2.Left=30 b2.Top=235
b2.Caption="Save"
b3=createButton(f2)
b3.Left=120 b3.Top=235
b3.Caption="Load"
-----------------------------------------------------------
------- add items:
function addLevelItem(idx, addr, val) -- 3 per ..
lvi=listview_getItems(lv);
rd = "row"..idx
--idx2 = tonumber(idx) + 1 -- 1..2..3..
rd=listitems_add(lvi)
-- desc:
listitem_setCaption(rd, "["..idx.."]") -- 0..1..2..
row1_subitems=listitem_getSubItems(rd)
-- address:
strings_add(row1_subitems, addr)
-- value:
strings_add(row1_subitems, val)
end
for i=0, 10 do
idx = i
addr = "Addr_"..i
val = "val_"..i
addLevelItem(idx, addr, val)
end
-----------------------------------------------------------
------- select line:
local changeIndex=0
lv.OnClick=function()
changeIndex = listview_getItemIndex(lv)
r1 = listview_getItems(lv)
item = listitems_getItem(r1, changeIndex)
subitems = listitem_getSubItems(item)
l2.caption="Index: "..changeIndex
l1.Caption="Desc: "..item.Caption.." - Address: "..subitems[0].." - Value: "..subitems[1]
end
-----------------------------------------------------------
------- change Value:
b1.OnClick=function()
if e1.Text~="" then
r1 = listview_getItems(lv)
item = listitems_getItem(r1, changeIndex)
subitems = listitem_getSubItems(item)
subitems[1] = e1.Text -- Value ..
l1.Caption="Desc: "..item.Caption.." - Address: "..subitems[0].." - Value: "..subitems[1]
else
showMessage("Please write a value in the box!")
end
end
-----------------------------------------------------------
------- save option list:
local savedialog = createSaveDialog()
savedialog.Title = 'Save List'
savedialog.DefaultExt = '.txt'
savedialog.Filter = 'textfiles (*.txt)|*.txt'
savedialog.Options = '[ofOverwritePrompt, ofHideReadOnly, ofEnableSizing]'
b2.OnClick=function()
local sd_result = savedialog.Execute()
if not sd_result then return end
local filename = savedialog.FileName
if filename==nil or filename=='' then return end
local text = ""
--print(filename)
local saveResult = fileExists(filename) or "true" or false
if saveResult=="true" then
for i=0, lv.Items.Count -1 do
r1 = listview_getItems(lv)
item = listitems_getItem(r1, i)
subitems = listitem_getSubItems(item)
text = text..item.Caption.."@@@"..subitems[0].."@@@"..subitems[1].."\n"
end
if filename then
sl = createStringlist()
sl.Text = text
sl.saveToFile(filename)
sl.destroy()
end
else
showMessage('Could not save to file '..filename)
end
end
-----------------------------------------------------------
------- load option list:
local opendialog = createOpenDialog()
opendialog.Title = 'Open List'
opendialog.DefaultExt = '.txt'
opendialog.Filter = 'textfiles (*.txt)|*.txt'
opendialog.Options = '[ofOverwritePrompt, ofHideReadOnly, ofEnableSizing]'
b3.OnClick=function()
local od_result = opendialog.Execute()
if not od_result then return end
local filename = opendialog.FileName
if filename==nil or filename=='' then return end
local openResult = fileExists(filename) or "true" or false
if openResult==true then
sl = createStringlist()
sl.loadFromFile(filename)
for i=0, sl.Count -1 do
r1 = listview_getItems(lv)
item = listitems_getItem(r1, i)
subitems = listitem_getSubItems(item)
desc,s0,s1 = string.match(sl[i],"(.-)@@@(.-)@@@(.*)")
item.Caption=desc
subitems[0]=s0
subitems[1]=s1
end
else
showMessage('Could not open to file '..filename)
end
end
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