#include <CtrlLib/CtrlLib.h>
#include <RichEdit/RichEdit.h>
#include <shellapi.h>
using namespace Upp;

#define LAYOUTFILE "MainLay.lay"
#include <CtrlCore/lay.h>
/*
DragAcceptFiles
DragFinish
DragQueryFile
DragQueryPoint
*/

class TestDragDrop : public WithMainGUI<TopWindow>
{
	public:
		TestDragDrop();
		~TestDragDrop();	
		virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam);
	
	private:
		void showDroppedFiles(HDROP dropInfo);
	private:
		RichEdit editor;
		typedef TestDragDrop CLASSNAME;
};

TestDragDrop::TestDragDrop()
{
	Add(editor.SizePos());
	editor.SetFocus();
	Open();
	HWND hwnd = GetHWND();
	DragAcceptFiles(hwnd,true);
}

TestDragDrop::~TestDragDrop()
{
}

void TestDragDrop::showDroppedFiles(HDROP hdrop)
{
	//get how many are dropped
	int count = DragQueryFile((HDROP)hdrop, (DWORD)-1, 0, 0);
	Vector<String> list;
	for(int i = 0; i < count; i++) {
		//get length of files name
		int length = DragQueryFile((HDROP)hdrop, i, 0, 0);
		String s;
		DragQueryFile((HDROP)hdrop, i, s.GetBuffer(length), length + 1);
		s.ReleaseBuffer(length);
		//Taken from UWord codes
		editor.SetQTF(LoadFile(s));
		editor.ClearModify();
	}
	DragFinish((HDROP)hdrop);
}

LRESULT TestDragDrop::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
{
	HWND hwnd = GetHWND();
	switch(message) 
	{
		case WM_DROPFILES:
		{
			showDroppedFiles((HDROP)wParam);
			return 0;
		}
		default:
			return TopWindow::WindowProc(message, wParam, lParam);
	}
	return true;
}

GUI_APP_MAIN
{
	TestDragDrop test;
	
	test.Run();
}

	virtual void    NcCreate(HWND hwnd);
	virtual void    NcDestroy();
	virtual void    PreDestroy();

void TestDragDrop::NcCreate(HWND hwnd)
{
	Ctrl::NcCreate(hwnd);
	DragAcceptFiles(hwnd,true);
}