OpenEuphoria

2. RE: [WIN] What's my issue?

• Posted by Mathew Lewis <matthewwalkerlewis at YAHOO.COM> Mar 02, 2001
• 482 views

> -----Original Message-----
> From: leviathan at uswest.net [mailto:leviathan at uswest.net]
> 
> I have a search box, but after clearing the search listview 
> and trying 
> the search again, it crashes. I got down exactly the line it crashes 
> at, however, I have absolutely no clue why it crashes since I 
> unfortunatly don't have the full version interpreter quite yet (I'm 
> working on it), so can someone tell me whats wrong?

I've found a few bugs in deleteItem.  They'll be fixed in the next release.
Until then, the full function should read:

global function deleteItem( atom id, integer pos )

    -- deletes an item at position

    integer msg
    
    -- Begin Matt Lewis 
    atom LV_FINDINFO, lParam, iItem
    
    lParam = 0
    -- End Matt Lewis
    
    -- get the message, based on control type
    if      window_class[ id ] = LISTBOX then msg = LB_DELETESTRING
    elsif   window_class[ id ] = COMBO   
    -- Begin Matt Lewis
    or window_type[id] = ComboBoxEx      then msg = CB_DELETESTRING
    
    elsif window_type[ id ] = ListView then
        if pos = -1 then
            msg = LVM_DELETEALLITEMS
            
            iItem = 1
            
            while iItem <= length( lvitem_owner ) do
                if lvitem_owner[iItem] = id then
                    removeLVItem( iItem )
                    if iItem < length(lvitem_owner) then
                        iItem += 1
                    end if
                else 
                    iItem += 1
                end if
                
            end while
            
        else
            
            LV_FINDINFO = struct_LVFINDINFO( LVFI_PARAM, "", pos, 0, 0, 0)
            
            iItem = sendMessage( id, LVM_FINDITEM, -1, LV_FINDINFO ) + 1
            
            release_mem(LV_FINDINFO)
            
            if not iItem then
                return 0
            end if
            
            msg = sendMessage( id, LVM_DELETEITEM, iItem-1, lParam )
            if msg then
                removeLVItem( pos )
            end if
            
            return msg
            
        end if
        
    elsif window_type[ id ] = TreeView then
        msg = TVM_DELETEITEM
        if pos = -1 then
            lParam = TVI_ROOT
            
            -- changed to only delete items in the treeview specified
            iItem = 1
            
            while iItem <= length( tvitem_owner ) do
                if tvitem_owner[iItem] = id then
                    removeTVItem( iItem )
                    if iItem < length(tvitem_owner) then
                        iItem += 1
                    end if
                else 
                    iItem += 1
                end if
                
            end while
            
        else
            
            -- take care of any children
            iItem = find(pos, tvitem_parent)
            while iItem do
                if deleteItem( id, iItem ) then end if
                iItem = find(pos, tvitem_parent)
            end while
            
            lParam = tvitem_handle[pos]
            removeTVItem( pos )
        end if
        pos = 1
        
    -- End Matt Lewis
    
    end if
    return sendMessage( id, msg, pos-1, lParam )
end function

Matt Lewis