ultimatepp/reference/ArrayCtrlDnD/main.cpp

#include <CtrlLib/CtrlLib.h>

using namespace Upp;

struct App : TopWindow {
	ArrayCtrl a, b;
	Splitter  s;

	void DnD(PasteClip& d)
	{
		if(AcceptText(d)) {
			a.Add(GetString(d), GetString(d));
			a.SetFocus();
		}
	}

	void DnDInsert(int line, PasteClip& d)
	{
		if(AcceptInternal<ArrayCtrl>(d, "array")) {
			a.InsertDrop(line, d);
			a.SetFocus();
		}
		if(AcceptText(d)) {
			a.Insert(line);
			a.Set(line, 0, GetString(d));
			a.SetCursor(line);
			a.SetFocus();
		}
	}

	void DnDInsertB(int line, PasteClip& d)
	{
		if(AcceptInternal<ArrayCtrl>(d, "array")) {
			const ArrayCtrl& src = GetInternal<ArrayCtrl>(d);
			bool self = &src == &b;
			Vector< Vector<Value> > data;
			for(int i = 0; i < src.GetCount(); i++)
				if(src.IsSel(i)) {
					Value v = src.Get(i, 0);
					data.Add().Add(IsNumber(v) ? FormatIntRoman((int)src.Get(i, 0)) : String(v));
				}
			b.InsertDrop(line, data, d, self);
			b.SetFocus();
		}
	}

	void Drag()
	{
		if(a.DoDragAndDrop(InternalClip(a, "array")) == DND_MOVE)
			a.RemoveSelection();
	}

	void DragB()
	{
		if(b.DoDragAndDrop(InternalClip(b, "array"), b.GetDragSample()) == DND_MOVE)
			b.RemoveSelection();
	}

	App() {
		a.AddColumn("You can paste the text here too");
		a.MultiSelect();
		a.WhenDropInsert = [=](int line, PasteClip& d) { DnDInsert(line, d); };
		a.WhenDrop = [=] (PasteClip& d) { DnD(d); };
		a.WhenDrag = [=] { Drag(); };

		b.AddColumn("Roman numbers");
		b.MultiSelect();
		b.WhenDropInsert = [=](int line, PasteClip& d) { DnDInsertB(line, d); };
		b.WhenDrag = [=] { DragB(); };

		Add(s.Horz(a, b));
		for(int i = 0; i < 15; i++) {
			a.Add(i);
			b.Add(FormatIntRoman(i, true));
		}
		Sizeable();
	}
};

GUI_APP_MAIN
{
	App().Run();
}