backgroundwnd.cpp

vc++6.0开发网络典型应用实例导航 1. 本光盘提供了本书中所有的实例源程序文件。 2. 附录文件夹下是Winsock 函数参考以及错误码列表

//this is part of my crackpot background-image-in-richedit scheme

#include "stdafx.h"
#include "Netmsg.h"
#include "BackgroundWnd.h"
#include "Conversation.h"
#include "ConvEdit.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CBackgroundWnd

CBackgroundWnd::CBackgroundWnd()
{
	m_Chat = NULL;
}

CBackgroundWnd::~CBackgroundWnd()
{
}


BEGIN_MESSAGE_MAP(CBackgroundWnd, CWnd)
	//{{AFX_MSG_MAP(CBackgroundWnd)
	ON_WM_PAINT()
	ON_WM_TIMER()
	ON_WM_SIZE()
	ON_NOTIFY(EN_LINK, IDC_CHAT, OnRichEditExLink)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CBackgroundWnd message handlers

void CBackgroundWnd::OnPaint() 
{
	CPaintDC dc(this);

	CConversation *pParent;
	pParent = (CConversation *)GetParent();
	
	RECT rect;

	GetClientRect(&rect);
	
	if (OSVER & WIN_WINNT)
	dc.FillSolidRect(&rect, RGB(255, 255, 255));

	if (GetApp()->View->bmConvBack && (OSVER & WIN_WINNT))
	{
		BITMAP bmInfo;
		POINT point;
		SIZE size;
		CBitmap::FromHandle(GetApp()->View->bmConvBack)->GetBitmap(&bmInfo);
		point.y = rect.bottom - bmInfo.bmHeight;
		point.x = rect.right - bmInfo.bmWidth - (pParent->m_Chat.m_bHasScrollBar
			? GetSystemMetrics(SM_CXVSCROLL) : 0);
		size.cy = bmInfo.bmHeight;
		size.cx = bmInfo.bmWidth;
		DrawBitmap(&dc, CRect(point.x, point.y, point.x + bmInfo.bmWidth, point.y + 
			bmInfo.bmHeight), NULL, CBitmap::FromHandle(GetApp()->View->bmConvBack));
	}
}

void CBackgroundWnd::OnTimer(UINT nIDEvent) 
{
	KillTimer(nIDEvent);
	RedrawWindow();
	CWnd::OnTimer(nIDEvent);
}

BOOL CBackgroundWnd::PreCreateWindow(CREATESTRUCT& cs) 
{
	WNDCLASS wnd;

	wnd.lpfnWndProc = ::DefWindowProc;
	wnd.style = NULL;
	wnd.hIcon = NULL;
	wnd.hCursor = NULL;
	wnd.hInstance = AfxGetInstanceHandle();
	wnd.lpszClassName = "ConvBkgndClass";
	wnd.hbrBackground = NULL;
	wnd.cbClsExtra = 0;
	wnd.cbWndExtra = 0;
	wnd.lpszMenuName = NULL;

	AfxRegisterClass(&wnd);

	cs.lpszClass = "ConvBkgndClass";
	
	return CWnd::PreCreateWindow(cs);
}

void CBackgroundWnd::OnSize(UINT nType, int cx, int cy) 
{
	CWnd::OnSize(nType, cx, cy);
	if (m_Chat)
	m_Chat->MoveWindow(0, 0, cx, cy);	
}

void CBackgroundWnd::OnRichEditExLink(NMHDR* pNotifyHeader, LRESULT* pResult)
{
	ENLINK* pENLink = (ENLINK *)pNotifyHeader;

	*pResult = 0;

	switch (pENLink->msg)
	{
		case WM_LBUTTONDOWN:
		{
			CString URL;
			CHARRANGE CharRange;

			m_Chat->GetSel(CharRange);
			m_Chat->SetSel(pENLink->chrg);
			URL = m_Chat->GetSelText();
			m_Chat->SetSel(CharRange);

			ShellExecute(GetSafeHwnd(), "open", URL, NULL, NULL, SW_SHOWNORMAL);

			*pResult = 1;
		}
		break;

		case WM_LBUTTONUP:
		{
			*pResult = 1;
		}
		break;
	}
}