[Qt-interest] removing items QTreeWidget

[Mystical Groovy]

Thank you very much for your answer Alex, ill try just deleting the item.


2009/11/4 Malyushytsky, Alex <alex at wai.com>

> 1) Do you really want just remove item from widget without deleting it?
> If you want to delete item, and don't need it in the future, just delete it
> :P
>
> QTreeWidgetItem *  item;
> ....
> ....
> delete item; // that is it, item will be removed from the widget and
> deleted
>
> 2)  here is a function I am using if I want delete selection.
> It requires you to specify the parent item ( which can be invisibleRootItem
> () if you want to start with root items) and depth to check (if you put the
> maximum number of children your root item can have, it will check
> everything. This value was required since I wanted to delete all items
> except specific depth if all the children are deleted)
>
> I commented code which deletes Parents without children.
>
>
> void deleteSelectedTreeViewItemChildren( QTreeWidgetItem* parentItem, int
> depth )
> {
>        QTreeWidgetItem* item= NULL;
>        for (int i= parentItem->childCount()-1; i >-1; i--)
>        {
>                item = parentItem->child( i );
>
>                if( item->isSelected () )
>                {
>                        delete item;
>                }
>                else
>                {
>                        if ( depth > 0 )
>                        {
>                                deleteSelectedTreeViewItemChildren( item,
> depth-1 );
> //                              if( item->childCount()==0 )
> //                              {
> //                                      delete item;
> //                              }
>                        }
>                }
>        }
>
> }
>
> Hope this helps,
>    Alex
>
>
>
> From: qt-interest-bounces at trolltech.com [mailto:
> qt-interest-bounces at trolltech.com] On Behalf Of BRM
> Sent: Tuesday, November 03, 2009 9:59 AM
> To: Mystical Groovy
> Cc: qt-interest at trolltech.com
> Subject: Re: [Qt-interest] removing items QTreeWidget
>
> Hint: When the user clicks the remove button, get the current selection and
> store it in another variable; then process that variable to do the actual
> remove.
> Also, if removing multiple items, sort the list by reverse index - highest
> index to lowest index - so you don't have to keep retrieving the list of
> selected items.
>
> Ben
>
> P.S.  By doing the above you'll also make your code far more debuggable
> since you'll now have variables you control that you can monitor to see what
> is being done - for example, you'll be able to spot the index values and
> whether or not it's even returning a valid index (it might not be) or if
> you're
> using a function wrong. I know it's a stylistic thing - but believe me, it
> really helps to have code that supports debugging instead of code that looks
> smart and short; you'll save yourself a lot of time in the long run. Just 2
> cents.
> ________________________________________
> From: Mystical Groovy <mysticalgr at gmail.com>
> To: qt-interest at trolltech.com
> Sent: Tue, November 3, 2009 12:29:48 PM
> Subject: Re: [Qt-interest] removing items QTreeWidget
>
> Anyone?
> Ill have to manage this one way or another, so please help :)
> 2009/11/2 Mystical Groovy <mysticalgr at gmail.com>
> Hey all,
>
> Im using QTreeWidget and a QList to display some create items from
> user-input text.
>
> code below:
> Qt Code:
>
>
>
> QList<QTreeWidgetItem *> items;
>
> items.append(new
> QTreeWidgetItem((QTreeWidget*)0,QStringList(QString(repoText))));//repoText
> = user-input text
>
>
> repoList->insertTopLevelItems(0, items); //repoList= my QTreeWidget
> now i have a remove button that when the user clicks it i want it to remove
> the currently selected item.
>
> using the following code, items from the QTreeWidget are removed but not
> the one ive clicked! ("!?!WTF...)
> Qt Code:
>
> int x = items.indexOf(repoList->currentItem());
>
>    repoList->takeTopLevelItem(x);
> Ive also tried the following with no luck:
> Qt Code:
>
>
>
>
>
> //with the following 2, the program compiles fine but nothing happens when
> i choose an item and click the remove button.
>
>    repoList->selectedItems().removeAt(x);
>    repoList->currentItem()->takeChild(x);
>
>
>
> //i get a bunch of errors using the following one...
>    repoList->selectedItems().removeAll(repoList->currentItem()->text(0));
> anyways, thank you for your time, and please help :_)
>
>
>
>
>
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