sendview.cpp

《Visual C++.NET MFC类库应用详解》程序实例

// SendView.cpp : 实现文件
//

#include "stdafx.h"
#include "Chatter.h"
#include "SendView.h"
#include "ChatterDoc.h"

static CString RandomString();

// CSendView

IMPLEMENT_DYNCREATE(CSendView, CEditView)

BEGIN_MESSAGE_MAP(CSendView, CEditView)
ON_WM_CHAR()
ON_WM_TIMER()
ON_COMMAND(ID_AUTOCHATTER, OnAutochatter)
ON_UPDATE_COMMAND_UI(ID_AUTOCHATTER, OnUpdateAutochatter)
END_MESSAGE_MAP()

CSendView::CSendView()
{
	m_TimerID = 0;
}

CSendView::~CSendView()
{
}


// CSendView 诊断

#ifdef _DEBUG
void CSendView::AssertValid() const
{
	CEditView::AssertValid();
}

void CSendView::Dump(CDumpContext& dc) const
{
	CEditView::Dump(dc);
}
#endif //_DEBUG

// CSendView 消息处理程序
BOOL CSendView::PreCreateWindow(CREATESTRUCT& cs)
{
	BOOL ret = CEditView::PreCreateWindow(cs);
	cs.style = AFX_WS_DEFAULT_VIEW | WS_VSCROLL | ES_AUTOHSCROLL |
		ES_AUTOVSCROLL | ES_MULTILINE | ES_NOHIDESEL;
	return ret;
}

void CSendView::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags)
{
	if ((nChar != VK_RETURN) || (nRepCnt!=1))
	{
		CEditView::OnChar(nChar, nRepCnt, nFlags);
		return;
	}
	else
	{
		CChatterDoc* pDoc = GetDocument();
		ASSERT_VALID(pDoc);

		CString strText;
		GetEditCtrl().GetWindowText(strText);

		pDoc->SendMsg(strText);

		strText=_T("");
		GetEditCtrl().SetWindowText(strText);
	}
}

BOOL CSendView::DestroyWindow()
{
	if (m_TimerID != 0)
		KillTimer(m_TimerID);

	return CEditView::DestroyWindow();
}

void CSendView::OnTimer(UINT nIDEvent)
{
	CChatterDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	if (pDoc->m_bAutoChat)
	{
		CString temp = RandomString();

		if (!temp.IsEmpty())
			pDoc->SendMsg(temp);
	}
	else
	{
		KillTimer(m_TimerID);
		m_TimerID = 0;
	}

	CEditView::OnTimer(nIDEvent);
}

void CSendView::OnAutochatter()
{
	CChatterDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	if (!pDoc->m_bAutoChat)
	{
		pDoc->m_bAutoChat = TRUE;
		m_TimerID = SetTimer(1, 1000, NULL);
	}
	else
	{
		pDoc->m_bAutoChat = FALSE;
		KillTimer(m_TimerID);
	}
}

void CSendView::OnUpdateAutochatter(CCmdUI* pCmdUI)
{
	CChatterDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);

	pCmdUI->SetCheck(pDoc->m_bAutoChat);
}

static CString RandomString()
{
	CString strResult;

	UINT val1 = (rand()%36) + IDS_STATEMENT01;
	UINT val2 = (rand()%6) + IDS_ADJECTIVE01;

	CString strStatement, strAdjective;

	if(!strStatement.LoadString(val1))
		return strResult;

	if(!strAdjective.LoadString(val2))
		return strResult;

	wsprintf(strResult.GetBuffer(strStatement.GetLength()+strAdjective.GetLength()),
		(LPCTSTR)strStatement,(LPCTSTR)strAdjective);
	strResult.ReleaseBuffer();

	return strResult;
}