ArrayCtrlSorting
Sorting columns in ArrayCtrl
main.cpp
#include <CtrlLib/CtrlLib.h>
using namespace Upp;
GUI_APP_MAIN
{
ArrayCtrl list;
list.AddColumn("Trivial").Sorting(); // with standard comparison
list.AddColumn("With sorting lambda").SortingBy( // sort with sorting function
[](int a, int b) -> int {
int q = SgnCompare(a % 100, b % 100);
if(q) return q;
return SgnCompare(a, b);
}
).SortDefault(); // set his column to be the initial sorting column;
list.AddColumn("Line comparison").SortingLined( // row indices passed to predicate
[&list](int i, int j) -> bool { // sort by sum of first two columns (as an example)
int a = int(list.Get(i, 0)) + int(list.Get(i, 1));
int b = int(list.Get(j, 0)) + int(list.Get(j, 1));
return list.IsSortDescending() ? b < a : a < b;
}
);
for(int i = 0; i < 300; i++)
list.Add((int)Random(1000), (int)Random(10000), i);
TopWindow app;
app.Add(list.SizePos());
app.Sizeable();
list.DoColumnSort(); // sort by current sorting column (which is "With function" column because of SortDefault
app.Run();
}
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