QTreeWidget, i cant see the items

Beginner

Sunday, May 20th 2012, 9:05pm

I add items to a treewidget but i cannot see them

i am usings qtjambi, here is the code, the libraryTree is the QTreeWidget I add the items.
i release that it never get past the second line until i close the window

Source code

System.out.println("Add item");QTreeWidgetItem allItem = new QTreeWidgetItem(libraryTree);System.out.println("1");allItem.setText(1, "All");System.out.println("2");libraryTree.addTopLevelItem(allItem);System.out.println("The item has been added");

output:

Source code

1
2

Add item//here i close the window after 1 minute
QObject::startTimer: QTimer can only be used with threads started with QThreadQObject::startTimer: QTimer can only be used with threads started with QThread12The item has been added

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Amleto

Professional

Posts: 1,430

2

Monday, May 21st 2012, 8:47am

Something is stopping your program from running. Since you dont show anything else about your code it is hard to say...

If you have a problem, CUT and PASTE your code. Do not retype or simplify it. Give a COMPLETE and COMPILABLE example of your problem. Otherwise we are all guessing the problem from a fabrication where relevant details are often missing.

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clepto

Beginner

Posts: 11

3

Monday, May 21st 2012, 9:01am

the problem is that its a lot of code interact with other code and etc etc etc....
i think it will be difficult for you to understand all the code to find the problem but here is the project --> deleted

i am trying to make a music player, i created the GUI with Qt Jambi (file /src/yamp/ui/YampMainWindow.java) and i am trying to list the artists in a QTreeWidget, the last line of main() in the previous file is

	Source code
1	window.setLibrary(artists_songs);

with this i call the the setLibrary() which will add the artists in the QTreeWidget

to get the artists a use mostly the code at /src/yamp/musiclibrary/LibraryManagement.java calling from /src/yamp/YampLibrary.java

if you have any question or anything tell me, sorry if i am not very understandable

edit: i commented line

	Source code
1	MultiMap artists_songs = m.YampLibrary();

in main and

	Source code
1 2	Set artists = map.keySet(); TreeSet artistsSorted = new TreeSet(artists);

in setLibrary() and i change the

	Source code
1	window.setLibrary(artists_songs);

with

	Source code
1	window.setLibrary(null);

so it doesn't execute other code but still i can't see the "All" and i still get the

Source code

Add item
QObject::startTimer: QTimer can only be used with threads started with QThread
QObject::startTimer: QTimer can only be used with threads started with QThread
1
2
The item has been added

This post has been edited 2 times, last edit by "clepto" (May 26th 2012, 7:42pm)

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Amleto

Professional

Posts: 1,430

4

Tuesday, May 22nd 2012, 8:22am

i'd look for code that uses startTimer/Qtimer

If you have a problem, CUT and PASTE your code. Do not retype or simplify it. Give a COMPLETE and COMPILABLE example of your problem. Otherwise we are all guessing the problem from a fabrication where relevant details are often missing.

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clepto

Beginner

Posts: 11

5

Tuesday, May 22nd 2012, 11:32am

i haven't written any code which use those...
maybe is under the hood of some function...

if you have any question tell me.

I appreciate it

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clepto

Beginner

Posts: 11

6

Tuesday, May 22nd 2012, 1:25pm

i solved it!
look here http://stackoverflow.com/questions/74500…ed-with-qthread
i change the two last lines in main so

	Source code
1	window.setLibrary(null);

will execute before

	Source code
1	QApplication.exec();

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Amleto

Professional

Posts: 1,430

7

Tuesday, May 22nd 2012, 6:51pm

Funny how a line that you didnt show us was the problem...

this is why I always try and insist on complete examples, not snippets. It's a waste of time...

If you have a problem, CUT and PASTE your code. Do not retype or simplify it. Give a COMPLETE and COMPILABLE example of your problem. Otherwise we are all guessing the problem from a fabrication where relevant details are often missing.