Which control for huge changing list ? Topic is solved

[Maeglix]

Hi !

I am looking ofr the right widget to use. I explain my case:

- I have a huge amount of items (currently, it is between 10k and 30k max but in theory it could be unlimited).
- I display information of those items in a list (currently a wxGrid).
- This items displayed in a list can change very often in function of some filters etc.. For example, i can chose to display in the list only the items which are visible on a map (that's the only link between the map and the list, i have a function that, for a given item, return if it is visible on the map or not).
- The users can can change the list columns.

My question is: As i saw there is many list control, which one should i use to optimize the performance ?

I don't know if my explanation was clear so don't hesitate if you have any question.

Thanks for your help.

[doublemax]

If you only need to display data ( no inline editing ), use a virtual(!) wxListCtrl.

[Maeglix]

No the users can't modify the displayed info. The only thing they can do (i forgot to say it, i edit the first message) is changing the column.

[doublemax]

That's ok. In a virtual wxListCtrl, you only tell the control how may columns and entries it has and you override one method (OnGetItemText) to provide the content for each "cell". All data management lies on your side.

[Maeglix]

Ok thank you ! Is there any sample of a virtual listBox ?

[doublemax]

In the "listctrl" sample.

[Anil8753]

wxDataViewCtrl, I found it is a nice control for this kind of requirement. Additional it provides the inline editing as well, of course, you do not need it.
Provide the flexibility to customise the look and feel by custom renderers.

[evstevemd]

wxDataViewCtrl, I found it is a nice control for this kind of requirement. Additional it provides the inline editing as well, of course, you do not need it.
Provide the flexibility to customise the look and feel by custom renderers.

It's nice indeed but only if he is going to limit data and page them. Putting "unlimited" rows will make it awful slow..!

[Anil8753]

wxDataViewCtrl, I found it is a nice control for this kind of requirement. Additional it provides the inline editing as well, of course, you do not need it.
Provide the flexibility to customise the look and feel by custom renderers.

It's nice indeed but only if he is going to limit data and page them. Putting "unlimited" rows will make it awful slow..!

wxDataViewCtrl is efficient in handling thousands of items. It has a GetData function, there you need to feed the requested data. Your data may reside in in-memory structure/database or regular database.

It requests and renders the visible items only.

[ONEEYEMAN]

Hi,

It's nice indeed but only if he is going to limit data and page them. Putting "unlimited" rows will make it awful slow..!

...especially on GTK+!

Thank you.

[Maeglix]

Thanks you guys ! I hadn't the time to try all those solutions and the one given by doublemax works.