| Forum List • Thread List • Reply • Refresh • New Topic • Search • Previous • Next  1  |  1. wxListCtrl::SortItems()#3332 Posted by: 2004-02-08 08:32:12 | I'm new to wxWindows, but I'm progressing along. However, I've come to an impass with respect to sorting items in a wxListCtrl. The documentaion says that I need to call the method SortItems(wxListCtrlCompare fn, long data) to sort the items.
I need to define the function wxListCtrlCompare with the following prototype
int wxCALLBACK wxListCompareFunction(long item1, long item2, long sortData)
My problem is that I can't seem to figure out how to use the item1, item2 and sortData arguments inside my compare function to do what I want for sorting. The function provided in the samples does no give me inough info. All it includes is:
int wxCALLBACK MyCompareFunction(long item1, long item2, long sortData)
{
// inverse the order
if (item1 < item2) return -1;
if (item1 > item2) return 1;
return 0;
}
I have a wxListCtrl object that I've configured to have several columns in the report view. I want to be able to sort the items in the wxListCtrl alphabetically based on the values in the 1st column only, the 2nd column only, 3rd column only, etc. I don't know how to use "item1" and "item2" and "sortData" to obtain the comparison I want in order to return the proper value (-1, 0, or 1) for my function. All I know is that "itemX" is the "client data" and "NOT the index". Does any body have any insight into how to do this, or have any sample code I could be directed to to figure this out.
Thanks for any help you can provide.
John | | Forum List • Thread List • Reply • Refresh • New Topic • Search • Previous • Next 1 |
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