ListIconGadget & checkbox states

[Phant0m``]

Hi

I’ve been fiddling a bit with ListIconGadget, and realized there doesn’t appear to be a proper implementation for PB commands to detect fully the state of a checkbox for when an item becomes checked or unchecked. And this is a problem when clicking directly on a ListIconGadget checkboxes, if I were to select a line and not try to change a line checkbox state, correct line information returns that allows me to retrieve the actual state of that line checkbox, but if there is no selection in ListIconGadget and you check or uncheck directly on a checkbox there is a problem and if there is a selection in a ListIconGadget and you check or uncheck directly a checkbox which is other-than the selected line then that is a problem in addition.

Now I could simply read every line in a ListIconGadget, and check its checkbox state but I were trying to avoid this for large list of items by making a cache of all which gets changed from the original state (for increase speed).

[Sparkie]

See if this helps...

Code: Select all

#LVN_ITEMCHANGED = #LVN_FIRST-1 
#MyWindow = 0 
#MyGadget = 1 
Procedure myWindowCallback(hWnd, msg, wParam, lParam) 
  result = #PB_ProcessPureBasicEvents 
  Select msg 
    Case #WM_NOTIFY 
      *pnmhdr.NMHDR = lParam 
      Select *pnmhdr\code 
        Case #LVN_ITEMCHANGED 
          *lvChange.NMLISTVIEW = lParam 
          Debug *lvChange\uNewState >>12 &$FFFF
          ;--> Read the State image mask value ( 1 = un-checked   2 = checked
          Select *lvChange\uNewState >>12 &$FFFF
            Case 1 
              StatusBarText(0, 0, "Item " + Str(*lvChange\iItem) + " has been un-checked") 
            Case 2
              StatusBarText(0, 0, "Item " + Str(*lvChange\iItem) + " has been checked") 
          EndSelect 
      EndSelect 
  EndSelect 
  ProcedureReturn result 
EndProcedure 
If OpenWindow(#MyWindow, 100, 100, 350, 140, #PB_Window_SystemMenu | #PB_Window_ScreenCentered, "ListIcon Test") And CreateGadgetList(WindowID()) 
  CreateStatusBar(0, WindowID()) 
  ListIconGadget(#MyGadget, 5, 5, 340, 110, "Name", 100, #PB_ListIcon_CheckBoxes | #PB_ListIcon_FullRowSelect|#PB_ListIcon_AlwaysShowSelection) 
  AddGadgetColumn(#MyGadget, 1, "Address", 250) 
  AddGadgetItem(#MyGadget, -1, "Harry Rannit" + Chr(10) + "12 Parliament Way, Battle Street, By the Bay") 
  AddGadgetItem(#MyGadget, -1, "Ginger Brokeit" + Chr(10) + "130 PureBasic Road, BigTown, CodeCity") 
  SetWindowCallback(@myWindowCallback()) 
  Repeat 
    event = WaitWindowEvent() 
  Until event = #PB_Event_CloseWindow 
EndIf 

*Edited to fix code*

[PB]

> See if this helps

Your code has a bug somewhere, Sparkie... run it and do this:

(1) Click Ginger's name (not her checkbox).
(2) Click Harry's checkbox.
(3) Click Ginger's checkbox.
(4) Repeat (3) and Ginger's state doesn't change anymore...



(A native command to get the checkbox state of a ListIconGadget item would be nice).

[Phant0m``]

Thanks Sparkie

This is something I was looking for as an alternative code, would be nice however to see fully working PB command to retrieve checkbox state. Anyways, thanks

[Sparkie]

Must have left something behind in the copy/paste. I'll go back and redo for you.

[Phant0m``]

[Sparkie]

Ok, it wasn't a copy/paste issue. it was a Sparkie issue.

I've edited the code above so it should work now.

[Phant0m``]

Sparkie! You da man!

[Sparkie]

I have my moments.

[UserOfPure]

Dear team, do you think it's possible for the GetGadgetState() command to return the ListIconGadget item when a checkbox is checked, like in Sparkie's example? At the moment the command only returns which item is selected, and takes no consideration if a checkbox is actioned. I think a checkbox action should override any item selection so that GetGadgetState() shows which item had its checkbox checked.

[Joris]

Dear team, do you think it's possible for the GetGadgetState() command to return the ListIconGadget item when a checkbox is checked, like in Sparkie's example? At the moment the command only returns which item is selected, and takes no consideration if a checkbox is actioned. I think a checkbox action should override any item selection so that GetGadgetState() shows which item had its checkbox checked.

+1

Thanks.

[em_uk]

Isn't this already implemented?

Code: Select all

If GetGadgetItemState(#List,1) & #PB_ListIcon_Checked
 do stuff
Endif

If the above line is selected and ticked then do stuff.

[Joris]

Isn't this already implemented?

Code: Select all

If GetGadgetItemState(#List,1) & #PB_ListIcon_Checked
 do stuff
Endif

If the above line is selected and ticked then do stuff.

No.
For GetGadgetItemState you need the item index to know from which item you wont the state, and that isn't 'send' when the check is placed.
(with api's this is possible...)