mciSendString("Set cdAudio door open wait",NULL,0,NULL);
mciSendString("Set cdAudio door closed wait",NULL,0,NULL);
OSVERSIONINFO OsVersionInfo; //包含操作系統版本信息的數據結構
OsVersionInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&OsVersionInfo); //獲取操作系統版本信息
if(OsVersionInfo.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
{
//Windows98,調用ExitWindowsEx()函數重新啟動計算機
DWORD dwReserved;
ExitWindowsEx(EWX_REBOOT,dwReserved); //可以改變第一個參數,實現注銷用戶、
//關機、關閉電源等操作
// 退出前的一些處理程序
}
typedef int (CALLBACK *SHUTDOWNDLG)(int); //顯示關機對話框函數的指針
HINSTANCE hInst = LoadLibrary("shell32.dll"); //裝入shell32.dll
SHUTDOWNDLG ShutDownDialog; //指向shell32.dll庫中顯示關機對話框函數的指針
if(hInst != NULL)
{
//獲得函數的地址並調用之
ShutDownDialog = (SHUTDOWNDLG)GetProcAddress(hInst,(LPSTR)60);
(*ShutDownDialog)(0);
}
LOGFONT lf;
lf.lfCharSet = DEFAULT_CHARSET; // Initialize the LOGFONT structure
strcpy(lf.lfFaceName,"");
CClientDC dc (this);
// Enumerate the font families
::EnumFontFamiliesEx((HDC) dc,&lf, (FONTENUMPROC) EnumFontFamProc,(LPARAM)
this,0);
//枚舉函數
int CALLBACK EnumFontFamProc(LPENUMLOGFONT lpelf,
LPNEWTEXTMETRIC lpntm,DWORD nFontType,long lparam)
{
// Create a pointer to the dialog window
CDay7Dlg* pWnd = (CDay7Dlg*) lparam;
// add the font name to the list box
pWnd ->m_ctlFontList.AddString(lpelf ->elfLogFont.lfFaceName);
// Return 1 to continue font enumeration
return 1;
}
//其中m_ctlFontList是一個列表控件變量
if( FindWindow(NULL,"程序標題")) exit(0);
CPoint pt;
GetCursorPos(&pt); //得到位置
OnContextMenu事件
CWnd *pWnd=AfxGetMainWnd();
if(b_m) //隱藏菜單
{
pWnd->SetMenu(NULL);
pWnd->DrawMenuBar();
b_m=false;
}
else
{
CMenu menu;
menu.LoadMenu(IDR_MAINFRAME); ////顯示菜單 也可改變菜單項
pWnd->SetMenu(&menu);
pWnd->DrawMenuBar();
b_m=true;
menu.Detach();
}
HICON hIcon=::ExtractIcon(AfxGetInstanceHandle(),_T("NotePad.exe"),0);
if (hIcon &&hIcon!=(HICON)-1)
{
pDC->DrawIcon(10,10,hIcon);
}
DestroyIcon(hIcon);
BOOL AdjustPos(CRect* lpRect)
{//自動靠邊
int iSX=GetSystemMetrics(SM_CXFULLSCREEN);
int iSY=GetSystemMetrics(SM_CYFULLSCREEN);
RECT rWorkArea;
BOOL bResult = SystemParametersInfo(SPI_GETWORKAREA,
sizeof(RECT), &rWorkAre
a, 0);
CRect rcWA;
if(!bResult)
{//如果調用不成功就利用GetSystemMetrics獲取屏幕面積
rcWA=CRect(0,0,iSX,iSY);
}
else
rcWA=rWorkArea;
int iX=lpRect->left;
int iY=lpRect->top;
if(iX < rcWA.left + DETASTEP && iX!=rcWA.left)
{//調整左
//pWnd->SetWindowPos(NULL,rcWA.left,iY,0,0,SWP_NOSIZE);
lpRect->OffsetRect(rcWA.left-iX,0);
AdjustPos(lpRect);
return TRUE;
}
if(iY < rcWA.top + DETASTEP && iY!=rcWA.top)
{//調整上
//pWnd->SetWindowPos(NULL
,iX,rcWA.top,0,0,SWP_NOSIZE);
lpRect->OffsetRect(0,rcWA.top-iY);
AdjustPos(lpRect);
return TRUE;
}
if(iX + lpRect->Width() > rcWA.right - DETASTEP
&& iX !=rcWA.right-lpRect->Width())
{//調整右
//pWnd->SetWindowPos(NULL
,rcWA.right-rcW.Width(),iY,0,0,SWP_NOSIZE);
lpRect->OffsetRect(rcWA.right-lpRect->right,0);
AdjustPos(lpRect);
return TRUE;
}
if(iY + lpRect->Height() > rcWA.bottom - DETASTEP
&& iY !=rcWA.bottom-lpRect
->Height())
{//調整下
//pWnd->SetWindowPos(NULL
,iX,rcWA.bottom-rcW.Height(),0,0,SWP_NOSIZE);
lpRect->OffsetRect(0,rcWA.bottom-lpRect->bottom);
return TRUE;
}
return FALSE;
}
//然後在ONMOVEING事件中使用所下過程調用
CRect r=*pRect;
AdjustPos(&r);
*pRect=(RECT)r;
給系統菜單添加一個菜單項需要進行下述三個步驟:
首先,使用Resource Symbols對話(在View菜單中選擇Resource Symbols...可以顯示該對話)定義菜單項ID,該ID應大於0x0F而小於0xF000;
其次,調用CWnd::GetSystemMenu獲取系統菜單的指針並調用CWnd:: Appendmenu將菜單項添加到菜單中。下例給系統菜單添加兩個新的
int CMainFrame:: OnCreate (LPCREATESTRUCT lpCreateStruct)
{
//…
//Make sure system menu item is in the right range.
ASSERT(IDM_MYSYSITEM<0xF000);
//Get pointer to system menu.
CMenu* pSysMenu=GetSystemMenu(FALSE);
ASSERT_VALID(pSysMenu);
//Add a separator and our menu item to system menu.
CString StrMenuItem(_T ("New menu item"));
pSysMenu->AppendMenu(MF_SEPARATOR);
pSysMenu->AppendMenu(MF_STRING, IDM_MYSYSITEM,
StrMenuItem);
//…
}
1、運行EMAIL或網址
char szMailAddress[80];
strcpy(szMailAddress,"mailto:[email protected]");
ShellExecute(NULL, "open", szMailAddress, NULL, NULL, SW_SHOWNORMAL);
2、運行可執行程序
WinExec("notepad.exe",SW_SHOW); //運行計事本
1、 增加菜單
添加
CMenu *mainmenu;
mainmenu=AfxGetMainWnd()->GetMenu(); //得到主菜單
(mainmenu->GetSubMenu (0))->AppendMenu (MF_SEPARATOR);//添加分隔符
(mainmenu->GetSubMenu (0))->AppendMenu(MF_STRING,ID_APP_ABOUT,
_T("Always on &Top")); //添加新的菜單項
DrawMenuBar(); //重畫菜單
2、 刪除菜單
刪除
CMenu *mainmenu;
mainmenu=AfxGetMainWnd()->GetMenu(); //得到主菜單
CString str ;
for(int i=(mainmenu->GetSubMenu (0))->GetMenuItemCount()-1;i>=0;i--)
//取得菜單的項數。
{
(mainmenu->GetSubMenu (0))->GetMenuString(i,str,MF_BYPOSITION);
//將指定菜單項的標簽拷貝到指定的緩沖區。MF_BYPOSITION的解釋見上。
if(str=="Always on &Top") //如果是剛才我們增加的菜單項,則刪除。
{
(mainmenu->GetSubMenu
(0))->DeleteMenu(i,MF_BYPOSITION);
break;
}
}
修改圖標資源IDR_MAINFRAME。它有兩個圖標,一個是16*16的,另一個是32*32的,注意要一起修改。
動態更改: 向主窗口發送WM_SETICON消息.代碼如下:
HICON hIcon=AfxGetApp()->LoadIcon(IDI_ICON);
ASSERT(hIcon);
AfxGetMainWnd()->SendMessage(WM_SETICON,TRUE,(LPARAM)hIcon);
使用語句 CWnd* m_pCWnd = AfxGetMainWnd( ),然後,再以如下形式調用SetWindowText()函數:
SetWindowText( *m_pCWnd,(LPCTSTR)m_WindowText);// m_WindowText可以是一個CString類的變量。
下面代碼拷貝通過元文件拷貝圖像數據到任何應用程序,
//其可以放置在CView派生類的函數中。
CMetaFileDC * m_pMetaDC = new CMetaFileDC();
m_pMetaDC->CreateEnhanced(GetDC(),NULL,NULL,"whatever");
//draw meta file
//do what ever you want to do: bitmaps, lines, text...
//close meta file dc and prepare for clipboard;
HENHMETAFILE hMF = m_pMetaDC->CloseEnhanced();
//copy to clipboard
OpenClipboard();
EmptyClipboard();
::SetClipboardData(CF_ENHMETAFILE,hMF);
CloseClipboard();
//DeleteMetaFile(hMF);
delete m_pMetaDC;
CString source;
//put your text in source
if(OpenClipboard())
{
HGLOBAL clipbuffer;
char * buffer;
EmptyClipboard();
clipbuffer = GlobalAlloc(GMEM_DDESHARE, source.GetLength()+1);
buffer = (char*)GlobalLock(clipbuffer);
strcpy(buffer, LPCSTR(source));
GlobalUnlock(clipbuffer);
SetClipboardData(CF_TEXT,clipbuffer);
CloseClipboard();
}
//從剪接板上獲取文本:
char * buffer;
if(OpenClipboard())
{
buffer = (char*)GetClipboardData(CF_TEXT);
//do something with buffer here
//before it goes out of scope
}
CloseClipboard();
void CShowBmpInDlgDlg::OnCutScreen()
{
ShowWindow(SW_HIDE);
RECT r_bmp={0,0,::GetSystemMetrics(SM_CXSCREEN),
::GetSystemMetrics(SM_CYSCREEN)};
HBITMAP hBitmap;
hBitmap=CopyScreenToBitmap(&r_bmp);
//hWnd為程序窗口句柄
if (OpenClipboard())
{
EmptyClipboard();
SetClipboardData(CF_BITMAP,
hBitmap);
CloseClipboard();
}
ShowWindow(SW_SHOW);
}
HBITMAP CShowBmpInDlgDlg::CopyScreenToBitmap(LPRECT lpRect)
{
//lpRect 代表選定區域
{
HDC hScrDC, hMemDC;
// 屏幕和內存設備描述表
HBITMAP hBitmap, hOldBitmap;
// 位圖句柄
int nX, nY, nX2, nY2;
// 選定區域坐標
int nWidth, nHeight;
// 位圖寬度和高度
int xScrn, yScrn;
// 屏幕分辨率
// 確保選定區域不為空矩形
if (IsRectEmpty(lpRect))
return
NULL;
//為屏幕創建設備描述表
hScrDC = CreateDC("DISPLAY",
NULL, NULL, NULL);
//為屏幕設備描述表創建兼容的內存設備描述表
hMemDC = CreateCompatibleDC(hScrDC);
// 獲得選定區域坐標
nX = lpRect->left;
nY = lpRect->top;
nX2 = lpRect->right;
nY2 = lpRect->bottom;
// 獲得屏幕分辨率
xScrn = GetDeviceCaps(hScrDC,
HORZRES);
yScrn = GetDeviceCaps(hScrDC,
VERTRES);
//確保選定區域是可見的
if (nX<0)
nX
= 0;
if (nY<0)
nY
= 0;
if (nX2>xScrn)
nX2
= xScrn;
if (nY2>yScrn)
nY2
= yScrn;
nWidth = nX2 - nX;
nHeight = nY2 - nY;
// 創建一個與屏幕設備描述表兼容的位圖
hBitmap = CreateCompatibleBitmap
(hScrDC,
nWidth, nHeight);
// 把新位圖選到內存設備描述表中
hOldBitmap =(HBITMAP)SelectObject(hMemDC,
hBitmap);
// 把屏幕設備描述表拷貝到內存設備描述表中
BitBlt(hMemDC, 0, 0, nWidth,
nHeight, hScrDC, nX, nY, SRCCOPY);
//得到屏幕位圖的句柄
hBitmap = (HBITMAP)SelectObject(hMemDC,
hOldBitmap);
//清除
DeleteDC(hScrDC);
DeleteDC(hMemDC);
// 返回位圖句柄
return hBitmap;
}
}
//在Staic控件內顯示位圖
void CShowBmpInDlgDlg::ShowBmpInStaic()
{
CBitmap hbmp;
HBITMAP hbitmap;
//將pStatic指向要顯示的地方
CStatic *pStaic;
pStaic=(CStatic*)GetDlgItem(IDC_IMAGE);
//裝載資源 MM.bmp是我的一個文件名,用你的替換
hbitmap=(HBITMAP)::LoadImage (::AfxGetInstanceHandle(),"MM.bmp",
IMAGE_BITMAP,0,0,LR_LOADFROMFILE|LR_CREATEDIBSECTION);
hbmp.Attach(hbitmap);
//獲取圖片格式
BITMAP bm;
hbmp.GetBitmap(&bm);
CDC dcMem;
dcMem.CreateCompatibleDC(GetDC());
CBitmap *poldBitmap=(CBitmap*)dcMem.SelectObject(hbmp);
CRect lRect;
pStaic->GetClientRect(&lRect);
//顯示位圖
pStaic->GetDC()->StretchBlt(lRect.left ,lRect.top
,lRect.Width(),lRect.Height(),
&dcMem,0 ,0,bm.bmWidth,bm.bmHeight,SRCCOPY);
dcMem.SelectObject(&poldBitmap);
}