pictureviewer.cpp

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// PictureViewer.cpp : Defines the entry point for the application.
//

#include "stdafx.h"
#include "PictureViewer.h"
#include <commctrl.h>
#include "Picture.h"
#include "ddraw.h"

#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE			hInst;			// The current instance
HWND				hwndCB;			// The command bar handle

// Forward declarations of functions included in this code module:
ATOM				MyRegisterClass	(HINSTANCE, LPTSTR);
BOOL				InitInstance	(HINSTANCE, int);
LRESULT CALLBACK	WndProc			(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK	About			(HWND, UINT, WPARAM, LPARAM);
HWND				main_window_handle; //used for recorde the main window handle(hwnd)

LPDIRECTDRAW4		lpDD4;
LPDIRECTDRAW		lpDD;
LPDIRECTDRAWSURFACE	lpDDSPrimary;
LPDIRECTDRAWSURFACE	lpDDSBack;
LPDIRECTDRAWSURFACE	lpDDSBuffer;
DDCAPS				caps;
DDSURFACEDESC		ddsd;
 
TCHAR szBitmap[50] = _T("\\storage card\\All.bmp");
TCHAR szTitle[MAX_LOADSTRING];								// The title bar text
TCHAR szWindowClass[MAX_LOADSTRING];								// The title bar text
DWORD SX;
DWORD SY;

BOOL InitDirectDraw(void);
void DestroyDirectDrawObjects();

BOOL LoadPicture( HDC hdc )
{
	HDC memdc = ::CreateCompatibleDC( NULL);

	HBITMAP bitmap = SHLoadDIBitmap(  szBitmap );
	
	if( bitmap == NULL )
	{
		MessageBox( main_window_handle, _T("bitmap handle is NULL !"), szTitle, MB_OK );
		return NULL;
	}
	::SelectObject( memdc, bitmap );
	
	
	if( FAILED( lpDDSBuffer->GetDC( &hdc ) ) )
		return FALSE;

	BITMAP bmp;
	GetObject(bitmap,sizeof(BITMAP),&bmp);   

	StretchBlt( hdc, 0, 0, SX, SY, memdc, 0, 0, bmp.bmWidth, bmp.bmHeight, SRCCOPY);
	lpDDSBuffer->ReleaseDC( hdc);
	
	return TRUE;
}

BOOL DirectDraw_Flip()
{
	RECT rect;
	rect.left = rect.top = 0 ;
	rect.bottom = 600 ;
	rect.right =  800;
	if( FAILED( lpDDSBack->BltFast( 0, 0, lpDDSBuffer, NULL, DDBLTFAST_WAIT | DDBLTFAST_SRCCOLORKEY ) ) )
	{
		MessageBox( main_window_handle, _T("BltFast from lpDDSBuffer to lpDDSBack FAILED !"), szTitle, MB_OK );
		return FALSE;
	}
	//将离屏页面(lpDDSBuffer)拷贝到后台页面(lpDDSBack)
	//lpDDSBack->BltFast( 0, 0, lpDDSBuffer, NULL, DDBLTFAST_WAIT | DDBLTFAST_SRCCOLORKEY );

	while(1)
	{
		lpDDSPrimary->Flip( NULL, DDFLIP_WAIT );

	}
}

int WINAPI WinMain(	HINSTANCE hInstance,
					HINSTANCE hPrevInstance,
					LPTSTR    lpCmdLine,
					int       nCmdShow)
{
	MSG msg;
	HACCEL hAccelTable;

	// Perform application initialization:
	if (!InitInstance (hInstance, nCmdShow)) 
	{
		return FALSE;
	}

	hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_PICTUREVIEWER);


	// Main message loop:
	while (GetMessage(&msg, NULL, 0, 0)) 
	{
		if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) 
		{
			TranslateMessage(&msg);
			DispatchMessage(&msg);
		}
	}

	return msg.wParam;
}

//
//  FUNCTION: MyRegisterClass()
//
//  PURPOSE: Registers the window class.
//
//  COMMENTS:
//
//    It is important to call this function so that the application 
//    will get 'well formed' small icons associated with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance, LPTSTR szWindowClass)
{
	WNDCLASS	wc;

    wc.style			= CS_HREDRAW | CS_VREDRAW;
    wc.lpfnWndProc		= (WNDPROC) WndProc;
    wc.cbClsExtra		= 0;
    wc.cbWndExtra		= 0;
    wc.hInstance		= hInstance;
    wc.hIcon			= LoadIcon(hInstance, MAKEINTRESOURCE(IDI_PICTUREVIEWER));
    wc.hCursor			= 0;
    wc.hbrBackground	= (HBRUSH) GetStockObject(WHITE_BRUSH);
    wc.lpszMenuName		= 0;
    wc.lpszClassName	= szWindowClass;

	return RegisterClass(&wc);
}

//
//  FUNCTION: InitInstance(HANDLE, int)
//
//  PURPOSE: Saves instance handle and creates main window
//
//  COMMENTS:
//
//    In this function, we save the instance handle in a global variable and
//    create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
	HWND	hWnd;
	TCHAR	szTitle[MAX_LOADSTRING];			// The title bar text
	TCHAR	szWindowClass[MAX_LOADSTRING];		// The window class name

	hInst = hInstance;		// Store instance handle in our global variable
	// Initialize global strings
	LoadString(hInstance, IDC_PICTUREVIEWER, szWindowClass, MAX_LOADSTRING);
	MyRegisterClass(hInstance, szWindowClass);

	LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
	hWnd = CreateWindow(szWindowClass, szTitle, WS_VISIBLE,
		CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL);

	if (!hWnd)
	{	
		return FALSE;
	}

	ShowWindow(hWnd, nCmdShow);
	UpdateWindow(hWnd);
	if (hwndCB)
		CommandBar_Show(hwndCB, TRUE);
	if( !InitDirectDraw( ) )
		return FALSE;
	LoadPicture( GetDC( hWnd ) );
	return TRUE;
}

//
//  FUNCTION: WndProc(HWND, unsigned, WORD, LONG)
//
//  PURPOSE:  Processes messages for the main window.
//
//  WM_COMMAND	- process the application menu
//  WM_PAINT	- Paint the main window
//  WM_DESTROY	- post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	HDC hdc;
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	TCHAR szHello[MAX_LOADSTRING];
	main_window_handle = hWnd;


	switch (message) 
	{
		case WM_COMMAND:
			wmId    = LOWORD(wParam); 
			wmEvent = HIWORD(wParam); 
			// Parse the menu selections:
			switch (wmId)
			{
				case IDM_HELP_ABOUT:
				   DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
				   break;
				case IDM_FILE_EXIT:
				   DestroyWindow(hWnd);
				   break;
				default:
				   return DefWindowProc(hWnd, message, wParam, lParam);
			}
			break;
		case WM_CREATE:
			hwndCB = CommandBar_Create(hInst, hWnd, 1);			
			CommandBar_InsertMenubar(hwndCB, hInst, IDM_MENU, 0);
			CommandBar_AddAdornments(hwndCB, 0, 0);
			break;
		case WM_PAINT:
			RECT rt;
			hdc = BeginPaint(hWnd, &ps);
			GetClientRect(hWnd, &rt);
			LoadString(hInst, IDS_HELLO, szHello, MAX_LOADSTRING);
			//DrawText(hdc, szHello, _tcslen(szHello), &rt, 
			//	DT_SINGLELINE | DT_VCENTER | DT_CENTER);
			
			EndPaint(hWnd, &ps);
			break;
		case WM_DESTROY:
			CommandBar_Destroy(hwndCB);
			PostQuitMessage(0);
			break;
		case WM_TIMER:
			LoadPicture( hdc );
			DirectDraw_Flip();
			break;
		case WM_KEYDOWN:
			switch( wParam )
			{
			case VK_LEFT:
				DirectDraw_Flip();
				break;
			case VK_RIGHT:
				DirectDraw_Flip();
				break;
			case VK_ESCAPE:
				PostMessage( hWnd, WM_CLOSE, 0, 0 );
				break;
			}
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
   }
   return 0;
}

// Mesage handler for the About box.
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
	RECT rt, rt1;
	int DlgWidth, DlgHeight;	// dialog width and height in pixel units
	int NewPosX, NewPosY;

	switch (message)
	{
		case WM_INITDIALOG:
			// trying to center the About dialog
			if (GetWindowRect(hDlg, &rt1)) {
				GetClientRect(GetParent(hDlg), &rt);
				DlgWidth	= rt1.right - rt1.left;
				DlgHeight	= rt1.bottom - rt1.top ;
				NewPosX		= (rt.right - rt.left - DlgWidth)/2;
				NewPosY		= (rt.bottom - rt.top - DlgHeight)/2;
				
				// if the About box is larger than the physical screen 
				if (NewPosX < 0) NewPosX = 0;
				if (NewPosY < 0) NewPosY = 0;
				SetWindowPos(hDlg, 0, NewPosX, NewPosY,
					0, 0, SWP_NOZORDER | SWP_NOSIZE);
			}
			return TRUE;

		case WM_COMMAND:
			if ((LOWORD(wParam) == IDOK) || (LOWORD(wParam) == IDCANCEL))
			{
				EndDialog(hDlg, LOWORD(wParam));
				return TRUE;
			}
			break;
	}
    return FALSE;
}

BOOL InitDirectDraw(void)
{
	
	DDSCAPS ddscaps;
	HRESULT ddrval;
	ddrval = DirectDrawCreate( NULL, &lpDD, NULL );
	SX = GetSystemMetrics( SM_CXSCREEN );
	SY = GetSystemMetrics( SM_CYSCREEN );
	if( ddrval != DD_OK)
	{
		DestroyDirectDrawObjects();
		MessageBox( main_window_handle, _T("DirectDraw DirectDrawCreate FAILED"), szTitle, MB_OK );
		DestroyWindow( main_window_handle );
		return FALSE;
	}
/*	ddrval = lpDD->QueryInterface( IID_IDirectDraw4, (LPVOID*)&lpDD4 );
	if( ddrval != DD_OK )
	 {
		DestroyDirectDrawObjects();
		MessageBox( main_window_handle, _T("DirectDraw DirectDrawCreate FAILED"), szTitle, MB_OK );
		DestroyWindow( main_window_handle );
		return FALSE;
	}
*/
	// Get exclusive mode
	ddrval = lpDD->SetCooperativeLevel( main_window_handle, DDSCL_EXCLUSIVE | DDSCL_FULLSCREEN );
	if( ddrval != DD_OK )
	{
	  DestroyDirectDrawObjects();
	  MessageBox( main_window_handle, _T("DirectDraw SetCooperativeLevel FAILED"), szTitle, MB_OK );
	  DestroyWindow( main_window_handle );
	  return FALSE;
	}

	  // Set the video mode to 640x480x8
	ddrval = lpDD->SetDisplayMode( SX, SY, 16 );
	if( ddrval != DD_OK )
	{
	  DestroyDirectDrawObjects();
	  MessageBox( main_window_handle, _T("DirectDraw SetDisplayMode FAILED"), szTitle, MB_OK );
	  DestroyWindow( main_window_handle );
	  return FALSE;
	}

	  // Create the primary surface with 1 back buffer
	ddsd.dwSize = sizeof( ddsd );
	ddsd.dwFlags = DDSD_CAPS | DDSD_BACKBUFFERCOUNT;
	ddsd.ddsCaps.dwCaps = DDSCAPS_PRIMARYSURFACE | DDSCAPS_FLIP | DDSCAPS_COMPLEX;
	ddsd.dwBackBufferCount = 1;
	ddrval = lpDD->CreateSurface( &ddsd, &lpDDSPrimary, NULL );
	if( ddrval != DD_OK )
	{
	  DestroyDirectDrawObjects();
	  MessageBox( main_window_handle, _T("DirectDraw CreateSurface FAILED"), szTitle, MB_OK );
	  DestroyWindow( main_window_handle );
	  return FALSE;
	}

	ddscaps.dwCaps = DDSCAPS_BACKBUFFER;
	ddrval = lpDDSPrimary->GetAttachedSurface( &ddscaps, &lpDDSBack );
	if( ddrval != DD_OK )
	{
	  DestroyDirectDrawObjects();
	  MessageBox( main_window_handle, _T("DirectDraw GetAttachedSurface FAILED"), szTitle, MB_OK );
	  DestroyWindow( main_window_handle );
	  return FALSE;
	}
	//创建离屏页面
	memset(&ddsd,0,sizeof(ddsd)); //清空结构内容
	ddsd.dwSize=sizeof(ddsd); //设置大小
	ddsd.dwFlags = DDSD_CAPS | DDSD_HEIGHT | DDSD_WIDTH;
	ddsd.ddsCaps.dwCaps = DDSCAPS_OFFSCREENPLAIN;//指定页面类型 
	ddsd.dwWidth=600;
	ddsd.dwHeight=800; //设置离屏页面大小

	ddrval = lpDD->CreateSurface( &ddsd,&lpDDSBuffer,NULL );
	if( ddrval != DD_OK )
	{
		DestroyDirectDrawObjects();
		MessageBox( main_window_handle, _T("DirectDraw CreateSurface for offscreen Failed"), szTitle, MB_OK);
		DestroyWindow( main_window_handle );
		return FALSE;
	}
	//设置定时器
	SetTimer(main_window_handle,1,50,NULL);
	return TRUE;
}

void DestroyDirectDrawObjects()
{
	if( lpDD != NULL)
	{
		if( lpDD4 != NULL )
		{
			if(	lpDDSPrimary != NULL)
			{	
				lpDDSPrimary->Release();
				lpDDSPrimary = NULL;
			}
			
			
		}
		lpDD->Release();
		lpDD = NULL;
	}
}