cameratest.cpp

里面有很多wince下开发的源代码

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_CAMERATEST);

	// 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_CAMERATEST));
    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_CAMERATEST, 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);

	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];

	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;
				case IDM__START_CAPTURE :
					CaptureInit() ;
					StartCapture();
					break ;
				case IDM_STOP_CAPUTRE :
					StopCapture();
					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:
			HDC hdcSrc;
			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);

			hdcSrc = CreateCompatibleDC(hdc);
            HBITMAP hbmOld, hbm;
			BITMAP bm ;
			hbm = LoadBitmap(hInst,MAKEINTRESOURCE(IDB_BITMAP_CAM)) ;
			GetObject(hbm, sizeof(bm), &bm);
			hbmOld = (struct HBITMAP__ *)SelectObject(hdcSrc, hbm);


            //BitBlt(hdc, 0, 0, bm.bmWidth, bm.bmHeight, hdcSrc, 0, 0, SRCCOPY);
			BitBlt(hdc, 0, 268+4, bm.bmWidth, bm.bmHeight, hdcSrc, 0, 0, SRCCOPY);

            SelectObject(hdcSrc, hbmOld);
	        DeleteObject(hbm) ;
            DeleteDC(hdcSrc);

			EndPaint(hWnd, &ps);
			break;
		case WM_DESTROY:
			StopCapture();
			CommandBar_Destroy(hwndCB);
			PostQuitMessage(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;
}


#define PAGE_SIZE 0x1000
#define ALIGNMENT_MASK (PAGE_SIZE-1)
extern "C" BOOL VirtualCopy( 
  LPVOID lpvDest, 
  LPVOID lpvSrc, 
  DWORD cbSize, 
  DWORD fdwProtect 
);

PVOID VirtualAllocCopy(unsigned size,char *str,PVOID pVirtualAddress)
{
	PVOID ptr;
    unsigned offset;

	//RETAILMSG(1,(TEXT("pVirtualAddress=0x%x\r\n"),pVirtualAddress));

	offset = (unsigned)pVirtualAddress & ALIGNMENT_MASK;

	//RETAILMSG(1,(TEXT("offset=0x%x\r\n"),offset));

	size +=offset ? PAGE_SIZE : 0;

	//RETAILMSG(1,(TEXT("size=0x%x\r\n"),size));

	ptr = VirtualAlloc(0,size,MEM_RESERVE,PAGE_NOACCESS);
	if (ptr == NULL) {
		ERRORMSG(1,(TEXT("VirtualAlloc failed! %s : size=0x%x, (0x%x)\r\n"),str,size,GetLastError()));
		return(0);
	}

	if (!VirtualCopy((PVOID)ptr,(PVOID)((unsigned)pVirtualAddress-offset),size,PAGE_READWRITE|PAGE_NOCACHE)) {
		ERRORMSG(1,(TEXT("VirtualCopy failed! %s : addr=0x%x, offset=0x%x(0x%x)\r\n"),str,(unsigned)pVirtualAddress,offset,GetLastError()));
		return(0);
	}  
	return((PVOID)((PBYTE)ptr+offset));
}