[QT 4.6.3] QtreeView: where to put a wait cursor during data search?

Alain38

Hi,
I have a QTreeView that uses my own QFileModel. In my QFileModel the function data(...) need to perform complex and (quite long) process to be able to determine what to display. So, I want to display a wait cursor so that the user be informed that the computer works.

I tried to display the wait cursor in data(...). But, when I try to expand a directory, this function is called a lot of time. Then the result is horrible. The numerous switchs between the wait cursor and the normal one are clearly visible.

I have searched for signals able to help me (emitted of the beginning and end of the display). But I found none of them. It is why I request your help for this problem.

Thanks a lot in advance.

sierdzio

You can create your own signals for that, and use them in your code.

Alain38

Hi,
Creating my own signals will change nothing. The problem is to be able to known when QT start displaying data in a QTreeView, and when it stops.

Alain38

Hi,
finally I found a better solution. I have overridden the paintEvent of myQtreeView. Qnd it is in this function that I am managing the cursor.

sierdzio

Nice to hear that, thanks for updating.