messagingtest.cpp

一个小巧的嵌入式图形系统wGUI, 可以用VC编译

// MessagingTest.cpp
//
// test application for the wGui messaging system
//
//
// Copyright (c) 2002 Rob Wiskow
// [e-mail]
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//


#include "wgui.h"
#include <vector>


using namespace std;
using namespace wGui;


class CTestLabel : public CLabel
{
public:
	CTestLabel(const CRect& WindowRect, CWindow* pParent) : CLabel(WindowRect, pParent)
		{ CMessageServer::Instance().RegisterMessageClient(this, CMessage::USER); }

	virtual bool HandleMessage(CMessage* pMessage);
};


class CTestView : public CView
{
public:
	CTestView(void);

	virtual bool HandleMessage(CMessage* pMessage);

protected:
	CButton* m_pExitButton;
};


class CTestApp : public CApplication
{
public:
	CTestApp(int argc, char **argv) : CApplication(argc, argv) { m_pTestView = 0; }
	~CTestApp(void) { delete m_pTestView; }

	virtual void Init(void)
	{
		CApplication::Init();
		m_pTestView = new CTestView();
	}


protected:
	CTestView* m_pTestView;
};


bool CTestLabel::HandleMessage(CMessage* pMessage)
{
	bool bHandled = false;

	if (pMessage)
	{
		switch (pMessage->MessageType())
		{
		case CMessage::USER:
		{
			TIntMessage* pIntMessage = dynamic_cast<TIntMessage*>(pMessage);
			if (pIntMessage)
			{
				SetWindowText(stdex::itoa(pIntMessage->Value()));
				pIntMessage->SetValue(pIntMessage->Value() + 1);
			}
		}
		default:
			bHandled = CLabel::HandleMessage(pMessage);
			break;
		}
	}

	return bHandled;
}


CTestView::CTestView(void) :
	CView(CRect(0, 0, 400, 100), "Messaging Test", true)
{
	SetWindowText(std::string("Messaging Test - wGui version ") + CwgStringResourceHandle(WGRES_VERSION_STRING).String());

	m_pExitButton = new CButton(ClientToScreen(CRect(320, 20, 380, 40)), this, "Exit");
	new CLabel(ClientToScreen(CRect(20, 20, 300, 40)), this, "Numbers should increment from left to right.");

	for (int iLeft = 20; iLeft < 340; iLeft += 60)
	{
		new CTestLabel(ClientToScreen(CRect(iLeft, 50, iLeft + 40, 70)), this);
	}

	CMessageServer::Instance().RegisterMessageClient(this, CMessage::CTRL_LCLICK);

	// queue the test message
	CMessageServer::Instance().QueueMessage(new TIntMessage(CMessage::USER, 0, 0, 1));
}


bool CTestView::HandleMessage(CMessage* pMessage)
{
	bool bHandled = false;

	if (pMessage)
	{
		switch (pMessage->MessageType())
		{
		case CMessage::CTRL_LCLICK:
		{
			if (pMessage->Destination() == this)
			{
				if (pMessage->Source() == m_pExitButton)
				{
					CMessageServer::Instance().QueueMessage(new CMessage(CMessage::APP_EXIT, 0, this));
					bHandled = true;
				}
			}
		}
		default:
			bHandled = CView::HandleMessage(pMessage);
			break;
		}
	}

	return bHandled;
}


int main(int argc, char **argv)
{
	int iExitCode = EXIT_FAILURE;
	try
	{
		CTestApp TestApp(argc, argv);
		TestApp.Init();
		TestApp.Exec();

		iExitCode = TestApp.ExitCode();
	}
	catch (Wg_Ex_Base& e)
	{
		cerr << "Unhandled wGui exception : " << e.std_what() << endl;
		exit(EXIT_FAILURE);
	}
	catch (exception& e)
	{
		cerr << "Unhandled std exception : " << e.what() << endl;
		exit(EXIT_FAILURE);
	}
	catch (...)
	{
		cerr << "Unhandled exception." << endl;
		exit(EXIT_FAILURE);
	}
	exit(iExitCode);
}