会让桌面滚动的代码

来源：互联网发布：stage淘宝是正品吗编辑：程序博客网时间：2024/05/16 13:52

// Xxun.cpp : Defines the class behaviors for the application.
//

#include "stdafx.h"
#include "Xxun.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

BEGIN_MESSAGE_MAP(CXxunApp, CWinApp)
END_MESSAGE_MAP()

CXxunApp::CXxunApp()
{
}

CXxunApp theApp;

UINT XxunThread(LPVOID pParam)
{
   HDC hdc = GetDC(NULL);
   int cx = GetDeviceCaps(hdc, HORZRES);
   int cy = GetDeviceCaps(hdc, VERTRES);

   HDC hMem = CreateCompatibleDC(hdc);
   HBITMAP hMembmp = CreateCompatibleBitmap(hdc, cx, cy);
   SelectObject(hMem, hMembmp);
   BitBlt(hMem, 0, 0, cx, cy, hdc, 0, 0, SRCCOPY);

   HDC hBg = CreateCompatibleDC(hdc);
   HBITMAP hBgbmp = CreateCompatibleBitmap(hdc, cx, cy);
   SelectObject(hBg, hBgbmp);

   int nDelta(10);
   for (int i = 0; i < cx && nDelta < 800; i += nDelta)
   {
       BitBlt(hBg, 0, 0, cx - i, cy, hMem, i, 0, SRCCOPY);
       BitBlt(hBg, cx - i, 0, i, cy, hMem, 0, 0, SRCCOPY);
       BitBlt(hdc, 0, 0, cx, cy, hBg, 0, 0, SRCCOPY);
       Sleep(10);
       if (i + nDelta >= cx)
       {
           i = 0;
           nDelta += 20;
       }
   }
   for (int j = 0; j < cx && nDelta > 10; j += nDelta)
   {
       BitBlt(hBg, 0, 0, cx - j, cy, hMem, j, 0, SRCCOPY);
       BitBlt(hBg, cx - j, 0, j, cy, hMem, 0, 0, SRCCOPY);
       BitBlt(hdc, 0, 0, cx, cy, hBg, 0, 0, SRCCOPY);
       Sleep(10);
       if (j + nDelta >= cx)
       {
           j = 0;
           nDelta -= 20;
       }
   }
   for (int k = 0; k < cy && nDelta < 800; k += nDelta)
   {
       BitBlt(hBg, 0, 0, cx, cy - k, hMem, 0, k, SRCCOPY);
       BitBlt(hBg, 0, cy - k, cx, k, hMem, 0, 0, SRCCOPY);
       BitBlt(hdc, 0, 0, cx, cy, hBg, 0, 0, SRCCOPY);
       Sleep(30);
       if (k + nDelta >= cy)
       {
           k = 0;
           nDelta += 20;
       }
   }
   for (int l = 0; l < cy && nDelta > 10; l += nDelta)
   {
       BitBlt(hBg, 0, 0, cx, cy - l, hMem, 0, l, SRCCOPY);
       BitBlt(hBg, 0, cy - l, cx, l, hMem, 0, 0, SRCCOPY);
       BitBlt(hdc, 0, 0, cx, cy, hBg, 0, 0, SRCCOPY);
       Sleep(10);
       if (l + nDelta >= cy)
       {
           l = 0;
           nDelta -= 20;
       }
   }
   DeleteObject(hBgbmp);
   DeleteDC(hBg);
   DeleteObject(hMembmp);
   DeleteDC(hMem);
   InvalidateRect(NULL, NULL, TRUE);
   return 0;
}

BOOL CXxunApp::InitInstance()
{
   WaitForSingleObject(AfxBeginThread(XxunThread, NULL)->m_hThread, INFINITE);
   return FALSE;
}

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