Function to load a bitmap on a dialog

// SBitDialogDlg.cpp : implementation file
//

#include "stdafx.h"
#include "SBitDialog.h"
#include "SBitDialogDlg.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
int flag1=0,flag2=0;

/////////////////////////////////////////////////////////////////////////////
// CSBitDialogDlg dialog

CSBitDialogDlg::CSBitDialogDlg(CWnd* pParent /*=NULL*/)
	: CDialog(CSBitDialogDlg::IDD, pParent)
{
	//{{AFX_DATA_INIT(CSBitDialogDlg)
	m_id = _T("");
	m_password = _T("");
	//}}AFX_DATA_INIT
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
}

void CSBitDialogDlg::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CSBitDialogDlg)
	DDX_Control(pDX, IDC_BUTTON2, m_grass);
	DDX_Control(pDX, IDCANCEL, m_cancel);
	DDX_Control(pDX, IDOK, m_ply);
	DDX_Text(pDX, IDC_EDIT2, m_id);
	DDX_Text(pDX, IDC_EDIT3, m_password);
	//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CSBitDialogDlg, CDialog)
	//{{AFX_MSG_MAP(CSBitDialogDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	ON_BN_CLICKED(IDC_BUTTON1, Onlogin)
	ON_WM_ERASEBKGND()
	ON_BN_CLICKED(IDC_BUTTON2, OnButton2)
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CSBitDialogDlg message handlers

BOOL CSBitDialogDlg::OnInitDialog()
{
	CDialog::OnInitDialog();

	// Set the icon for this dialog.  The framework does this automatically
	//  when the application's main window is not a dialog
	SetIcon(m_hIcon, TRUE);			// Set big icon
	SetIcon(m_hIcon, FALSE);		// Set small icon
	
	// TODO: Add extra initialization here
	//m_grass.MakeButton("GRASS BACKGROUND",IDB_button1N,IDB_button1P,IDB_button1N,IDB_button1N);
    //m_ply.MakeButton("PLYWOOD BACKGROUND",IDB_button1N,IDB_button1P,IDB_button1N,IDB_button1N);
	//m_cancel.MakeButton("CANCEL",IDB_button1N,IDB_button1P,IDB_button1N,IDB_button1N);
	
	           
	return TRUE;  // return TRUE  unless you set the focus to a control
}

// If you add a minimize button to your dialog, you will need the code below
//  to draw the icon.  For MFC applications using the document/view model,
//  this is automatically done for you by the framework.

void CSBitDialogDlg::OnPaint() 
{
	if (IsIconic())
	{
		CPaintDC dc(this); // device context for painting

		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0);

		// Center icon in client rectangle
		int cxIcon = GetSystemMetrics(SM_CXICON);
		int cyIcon = GetSystemMetrics(SM_CYICON);
		CRect rect;
		GetClientRect(&rect);
		int x = (rect.Width() - cxIcon + 1) / 2;
		int y = (rect.Height() - cyIcon + 1) / 2;

		// Draw the icon
		dc.DrawIcon(x, y, m_hIcon);
	}
	else
	{
		CDialog::OnPaint();
	}
}

// The system calls this to obtain the cursor to display while the user drags
//  the minimized window.
HCURSOR CSBitDialogDlg::OnQueryDragIcon()
{
	return (HCURSOR) m_hIcon;
}

void CSBitDialogDlg::Onlogin() 
{
	// TODO: Add your control notification handler code here
	UpdateData(TRUE);
	CString id=m_id;
	CString password=m_password;
	UpdateData(FALSE);
	if((id=="trek")&&(password=="trek"))
	{
		flag1=1;
		AfxMessageBox("WElCOME!  now you can change ur background.");
		
	}
     	else
	{
	   	AfxMessageBox("Invalid Username Or Password. Please Re-Enter!");
		UpdateData(TRUE);
		m_id="";
		m_password="";
		UpdateData(FALSE);
    }
	
}

bool CSBitDialogDlg::SBitdraw(CDC *pDC, UINT nIDResource, int i)
{
	CBitmap* m_bitmap;
	m_bitmap=new CBitmap();
	m_bitmap->LoadBitmap(nIDResource);
	if(!m_bitmap->m_hObject)
		return true;
    CRect rect;
	GetClientRect(&rect);
	CDC dc;
	dc.CreateCompatibleDC(pDC);	
	dc.SelectObject(m_bitmap);
	int bmw, bmh ;
	BITMAP bmap;
	m_bitmap->GetBitmap(&bmap);
	bmw = bmap.bmWidth;
	bmh = bmap.bmHeight;
	int xo=0, yo=0;
	switch(i){
	case 1:
	pDC->StretchBlt(xo, yo, rect.Width(),
			rect.Height(), &dc,
			0, 0,bmw,bmh, SRCCOPY);
	     break;
	case 2:
			if(bmw < rect.Width())
			xo = (rect.Width() - bmw)/2;
		else 
			xo=0;
		if(bmh < rect.Height())
			yo = (rect.Height()-bmh)/2;
		else
			yo=0;
		pDC->BitBlt (xo, yo, rect.Width(),
			rect.Height(), &dc,
			0, 0, SRCCOPY);
		break;
    case 3:
		for (yo = 0; yo < rect.Height(); yo += bmh)
		{
			for (xo = 0; xo < rect.Width(); xo += bmw)
			{
				pDC->BitBlt (xo, yo, rect.Width(),
					rect.Height(), &dc,
					0, 0, SRCCOPY);
			}
		}
	}
	return true;

}

BOOL CSBitDialogDlg::OnEraseBkgnd(CDC* pDC) 
{
	// TODO: Add your message handler code here and/or call default
	CDialog::OnEraseBkgnd(pDC);
	if((flag2==1)&&(flag1==1))
	{
		SBitdraw(pDC,IDB_back1,3);
		
	}
    if((flag2==2)&&(flag1==1))
	{
		SBitdraw(pDC,IDB_back2,3);
		
	}
	return true;
}

void CSBitDialogDlg::OnOK() 
{
	// TODO: Add extra validation here
	flag2=1;
	CClientDC Client(this);
    OnEraseBkgnd(&Client) ;
	Invalidate();
	AddBit1();
	
}

void CSBitDialogDlg::OnButton2() 
{
	// TODO: Add your control notification handler code here
	flag2=2;
	CClientDC Client(this);
    OnEraseBkgnd(&Client) ;
	Invalidate();
	AddBit2();
	
	
}

bool CSBitDialogDlg::AddBit1()
{
    if(flag1==1)
	{
	m_grass.SetSkin(IDB_button1N,IDB_button1P,IDB_button1N,IDB_button1N,NULL,NULL,0,0,0);
	m_ply.SetSkin(IDB_button1N,IDB_button1P,IDB_button1N,IDB_button1N,NULL,NULL,0,0,0);
    m_cancel.SetSkin(IDB_button1N,IDB_button1P,IDB_button1N,IDB_button1N,NULL,NULL,0,0,0);
	}
	return true;
}

bool CSBitDialogDlg::AddBit2()
{
	if(flag1==1)
	{
	m_grass.SetSkin(IDB_button2N,IDB_button2P,IDB_button2N,IDB_button2N,NULL,NULL,0,0,0);
	m_ply.SetSkin(IDB_button2N,IDB_button2P,IDB_button2N,IDB_button2N,NULL,NULL,0,0,0);
    m_cancel.SetSkin(IDB_button2N,IDB_button2P,IDB_button2N,IDB_button2N,NULL,NULL,0,0,0);
	}
	return true;

}