用c++應(yīng)用程序編寫(xiě)的雪花賀卡，逢年過(guò)節(jié)送給你自己身邊的親友吧

snow.cpp

///

// Snow.cpp

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

// A moving ball.

//

///

#include

#include "Snow.h"

TCHAR strForWin1[] = "時(shí)間過(guò)得好快啊!";

TCHAR strForWin2[] = "開(kāi)學(xué)已經(jīng)十周了..." ;

TCHAR strForWin3[] = "你學(xué)的怎么樣了?";

TCHAR strForWin4[] = "有問(wèn)題一定要及時(shí)讓我知道";

TCHAR strForWin5[] = "祝大家“小光棍節(jié)”快樂(lè)";

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

}

/*:: -- 作用域標(biāo)識(shí)符！如果是在MFC下編程的話，因?yàn)镸FC封裝了API函數(shù)，但是參數(shù)有的和API函數(shù)不一樣，

比如MFC封裝的函數(shù)一般都沒(méi)有句柄這個(gè)參數(shù)，但是API函數(shù)都有，

所以在MFC編程中，如果你調(diào)用的是全局的API函數(shù)的話就要加::符號(hào)，

來(lái)通知編譯器你調(diào)用的是全局的API函數(shù)，而不是MFC封裝的API函數(shù)！

當(dāng)然有的函數(shù)比如參數(shù)是個(gè)布爾型的，MFC封裝的函數(shù)和全局的API函數(shù)的參數(shù)相同，

編譯器默認(rèn)的是調(diào)用MFC封裝的函數(shù)，所以你加不加::作用域標(biāo)識(shí)符都是一樣的!!

控制臺(tái)下編寫(xiě)的程序用的就是API函數(shù)所以沒(méi)必要加::作用域標(biāo)識(shí)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 );

//設(shè)置定時(shí)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 );

}

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