C++实现新年贺卡程序_C/C++

用c++应用程序编写的雪花贺卡，逢年过节送给你自己身边的亲友吧

snow.cpp

				?

									///////////////////////////////////////////////////////////////////////////////

									// Snow.cpp

									// Date: 2009-2-5 21:16

									// A moving ball.

									//

									///////////////////////////////////////////////////////////////////////////////

									#include <assert.h>

									#include "Snow.h"

									TCHAR strForWin1[] = "时间过得好快啊!";

									TCHAR strForWin2[] = "开学已经十周了..." ;

									TCHAR strForWin3[] = "你学的怎么样了?";

									TCHAR strForWin4[] = "有问题一定要及时让我知道";

									TCHAR strForWin5[] = "祝大家“小光棍节”快乐";

									TCHAR strForWin6[] = "  CJ Wang 2011.11.1";

									const int nMaxHeight = 450;

									#define ID_TIMER 1

									///////////////////////////////////////////////////////////////////////////////

									int WINAPI WinMain( HINSTANCE hInst, HINSTANCE hPrevInst, char* cmdParam, int cmdShow )

									{

									 char className[] = "Snow";

									 MovingBall MovingBallClass( WindowsProcedure, className, hInst );

									 MovingBallClass.Register();

									 WinMaker win( "-- Have a joy here!", className, hInst );

									 win.Show( cmdShow );

									 MSG msg;

									 int status;

									 while( ( status = ::GetMessage( & msg, NULL, 0, 0 ) ) != 0 )

									 {

									 if ( status == -1 )

									 return -1;

									 ::TranslateMessage( & msg );

									 ::DispatchMessage( & msg );

									 }

									 return msg.wParam;

									}

									///////////////////////////////////////////////////////////////////////////////

									MovingBall::MovingBall( WNDPROC wndProc, const char* className, HINSTANCE hInstance )

									{

									 _class.style = 0;

									 _class.lpfnWndProc = wndProc; // Windows procedure: mandatory

									 _class.cbClsExtra = 0;

									 _class.cbWndExtra = 0;

									 _class.hInstance = hInstance;

									 _class.hIcon = 0; // Owner of class: mandatory

									 _class.hCursor = ::LoadCursor( 0, IDC_ARROW );

									 _class.hbrBackground = (HBRUSH) ( COLOR_WINDOW + 1 ); // Optional

									 _class.lpszMenuName = 0;

									 _class.lpszClassName = className; // Mandatory 

									}

									WinMaker::WinMaker( const char* szCaption, const char* className, HINSTANCE hInstance )

									{

									 DWORD dwStyle = WS_OVERLAPPEDWINDOW;

									 dwStyle &= ~WS_SIZEBOX;

									 dwStyle &= ~WS_MAXIMIZEBOX;

									 dwStyle &= ~WS_MINIMIZEBOX;

									 _hWnd = ::CreateWindow(

									 className, // Name of a registered window class

									 szCaption, // Window caption

									 dwStyle, // Window style

									 CW_USEDEFAULT, // x position

									 CW_USEDEFAULT, // y position

									 787, // width

									 590, // height

									 0, // Handle to parent window

									 0, // Handle to menu

									 hInstance, // Application instance

									 0 ); // Window creation data

									}

									/*:: -- 作用域标识符！如果是在MFC下编程的话，因为MFC封装了API函数，但是参数有的和API函数不一样，

									比如MFC封装的函数一般都没有句柄这个参数，但是API函数都有，

									所以在MFC编程中，如果你调用的是全局的API函数的话就要加::符号，

									来通知编译器你调用的是全局的API函数，而不是MFC封装的API函数！

									当然有的函数比如参数是个布尔型的，MFC封装的函数和全局的API函数的参数相同，

									编译器默认的是调用MFC封装的函数，所以你加不加::作用域标识符都是一样的!!

									控制台下编写的程序用的就是API函数所以没必要加::作用域标识符的。

									*/

									///////////////////////////////////////////////////////////////////////////////

									LRESULT CALLBACK WindowsProcedure( HWND hWnd, UINT uMessage, WPARAM wParam, LPARAM lParam )

									{

									 static HBITMAP hbmpBkground = NULL,

									 hbmpSnow = NULL,

									 hbmpMask = NULL;

									 static Snow snowFlakes[ 80 ];

									 static int countSnow = 0;

									 static int cxClient, cyClient;

									 static int nHeightY = nMaxHeight;

									 COLORREF clrBk;

									 PAINTSTRUCT ps;

									 HDC hdc = NULL,

									 hdcMem = NULL;

									 HINSTANCE hInst = NULL;

									 switch( uMessage )

									 {

									 case WM_CREATE:

									 hInst = ( (LPCREATESTRUCT) lParam )->hInstance;

									 assert( hInst );

									 hbmpBkground = ::LoadBitmap( hInst, TEXT( "bground" ) );

									 assert( hbmpBkground );

									 hbmpSnow = ::LoadBitmap( hInst, TEXT( "snow" ) );

									 assert( hbmpSnow );

									 hbmpMask = ::LoadBitmap( hInst, TEXT( "mask" ) ); 

									 assert( hbmpMask );

									 ::SetWindowPos( hWnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE );

									 //设置定时器

									 ::SetTimer( hWnd, ID_TIMER, 160, NULL );

									 return 0;

									 case WM_SIZE:

									 cxClient = LOWORD( lParam );

									 cyClient = HIWORD( lParam );

									 return 0;

									 case WM_PAINT:

									 hdc = ::BeginPaint( hWnd, & ps );

									 assert( hdc );

									 hdcMem = ::CreateCompatibleDC( hdc );

									 assert( hdcMem );

									 ::SelectObject( hdcMem, hbmpBkground );

									 ::BitBlt(

									 hdc,

									 0, 0, 

									 cxClient, cyClient,

									 hdcMem,

									 0, 0,

									 SRCCOPY );

									 ::DeleteDC( hdcMem );

									 ::EndPaint( hWnd, & ps ); 

									 return 0;

									 case WM_TIMER:

									 ::FlashWindow( hWnd, TRUE );

									 if ( countSnow < 80 )

									 {

									 snowFlakes[ countSnow ].xPos = rand() % cxClient;

									 snowFlakes[ countSnow ].yPos = 0;

									 snowFlakes[ countSnow ].bIsExist = TRUE;

									 countSnow++;

									 }

									 if ( countSnow == 80 )

									 countSnow = 0;

									 hdc = ::GetDC( hWnd );

									 assert( hdc );

									 hdcMem = ::CreateCompatibleDC( hdc );

									 assert( hdcMem );

									 ::SelectObject( hdcMem, hbmpBkground );

									 ::BitBlt(

									 hdc,

									 0, 0, 

									 cxClient, cyClient,

									 hdcMem,

									 0, 0,

									 SRCCOPY );

									 clrBk = ::GetBkColor( hdc );

									 ::SetTextColor( hdc, RGB( 0, 11, 255 ) );

									 ::SetBkColor( hdc, clrBk );

									 ::TextOut( hdc, 100, nHeightY, strForWin1, lstrlen( strForWin1 ) );

									 ::TextOut( hdc, 100, nHeightY + 18, strForWin2, lstrlen( strForWin2 ) );

									 ::TextOut( hdc, 100, nHeightY + 36, strForWin3, lstrlen( strForWin3 ) );

									 ::TextOut( hdc, 100, nHeightY + 54, strForWin4, lstrlen( strForWin4 ) );

									 ::TextOut( hdc, 100, nHeightY + 70, strForWin5, lstrlen( strForWin5 ) );

									 ::TextOut( hdc, 100, nHeightY + 88, strForWin6, lstrlen( strForWin6 ) );

									 //

									 // The redraw area for the text

									 //

									 nHeightY -= 10;

									 if ( nHeightY <= -88 )

									 {

									 nHeightY = nMaxHeight;

									 }

									 int i;

									 for ( i = 0; i < 80; i++ )

									 {

									 if ( snowFlakes[ i ].bIsExist )

									 {

									 ::SelectObject( hdcMem, hbmpMask );

									 ::BitBlt(

									 hdc,

									 snowFlakes[ i ].xPos, snowFlakes[ i ].yPos,

									 20, 20,

									 hdcMem,

									 0, 0,

									 SRCAND );

									 ::SelectObject( hdcMem, hbmpSnow );

									 ::BitBlt(

									 hdc,

									 snowFlakes[ i ].xPos, snowFlakes[ i ].yPos,

									 20, 20,

									 hdcMem,

									 0, 0,

									 SRCPAINT );

									 if ( rand() % 2 == 0 )

									 snowFlakes[ i ].xPos += 3;

									 else

									 snowFlakes[ i ].xPos -= 3;

									 snowFlakes[ i ].yPos += 10;

									 if ( snowFlakes[ i ].yPos > cyClient )

									 {

									 snowFlakes[ i ].xPos = rand() % cxClient;

									 snowFlakes[ i ].yPos = 0;

									 }

									 }

									 }

									 ::ReleaseDC( hWnd, hdc );

									 ::DeleteDC( hdcMem );

									 return 0;

									 case WM_DESTROY:

									 ::DeleteObject( hbmpBkground );

									 ::DeleteObject( hbmpSnow );

									 ::DeleteObject( hbmpMask );

									 ::KillTimer( hWnd, ID_TIMER );

									 ::PostQuitMessage( 0 );

									 return 0;

									 }

									 return ::DefWindowProc( hWnd, uMessage, wParam, lParam );

									}