#include <CtrlLib/CtrlLib.h>
#include <wincon.h>
#include <fcntl.h>

using namespace Upp;

bool CreateConsole()
{
	if (!AllocConsole())
		return false;

	int consoleHandle = _open_osfhandle((long)GetStdHandle(STD_OUTPUT_HANDLE), _O_TEXT);

	if (consoleHandle == -1)
		return false;

	*stdout = *(_fdopen(consoleHandle, "w"));
	setvbuf(stdout, NULL, _IONBF, 0);
	*stderr = *(_fdopen(consoleHandle, "w"));
	setvbuf(stderr, NULL, _IONBF, 0);

	std::ios::sync_with_stdio();

	return true;
}

class App : public TopWindow {
private:
	bool opened;
public:
	typedef App CLASSNAME;
	App();

	EditString text;
	FrameRight<Button> btnSend;
	Button btnManage;

	void ManageConsole();
	void ManageLabel();
	void Send();

	virtual bool Key(dword key, int count);
};

void App::ManageConsole()
{
	if (opened)
		opened = FreeConsole() == 0;
	else
		opened = CreateConsole();

	ManageLabel();
}

void App::ManageLabel()
{
	btnManage.SetLabel(opened ? "Close Console (F11)" : "Open Console (F11)");
}

void App::Send()
{
	if (stdout == NULL)
		return;

	String data = ~text;
	if (!data.IsEmpty())
		fprintf(stdout, "%s\n", ~data);
}

bool App::Key(dword key, int count)
{
	if (key == K_F11) {
		ManageConsole();
		return true;
	}
	if (key == K_ESCAPE)
		Break();

	return TopWindow::Key(key, count);
}

App::App() : opened(false)
{
	Title("From GUI to console");
	SetRect(Size(320, 120));
	MinimizeBox();

	btnSend.SetImage(CtrlImg::smallright());
	btnSend.Tip("Send output to console (Enter)");
	text.NullText(CtrlImg::write(), "Write here..");
	btnSend.WhenPush = text.WhenEnter = THISBACK(Send);
	text.AddFrame(btnSend);

	btnManage.WhenPush = THISBACK(ManageConsole);
	ManageLabel();

	Add(text.HSizePosZ(4, 4).TopPosZ(4, 19));
	Add(btnManage.HSizePosZ(4, 4).TopPosZ(27, 19));
}

GUI_APP_MAIN
{
	App app;
	app.Run();
}