windows_注册表后缀名关联

BOOL CheckFileRelation(const TCHAR* strExt, const TCHAR* strAppKey)
{
    HKEY hExtKey;

    BOOL bRet = RegOpenKey(HKEY_CLASSES_ROOT, _T(".itxb"), &hExtKey);
    if(!bRet) return FALSE;
    
    TCHAR szPath[_MAX_PATH];
    DWORD dwSize = sizeof(szPath);
    RegQueryValueEx(hExtKey, NULL, NULL, NULL, (LPBYTE)szPath, &dwSize);
    if(_tcscmp(szPath, strAppKey)==0)
    {
        RegCloseKey(hExtKey);
        return TRUE;
    }

    RegCloseKey(hExtKey);
    return FALSE;
}

/************************************************************************/
/*
注册文件关联，将文件的后缀名与具体的程序关联在一起
*/
/************************************************************************/
void RegisterFileRelation(TCHAR* strExt, TCHAR* strAppKey, TCHAR* strAppName)
{
    HKEY hKey;
    ::RegCreateKey(HKEY_CLASSES_ROOT, strExt, &hKey);
    ::RegSetValue(hKey, _T(""), REG_SZ, strAppKey, _tcslen(strAppKey)+1);
    ::RegCloseKey(hKey);

    TCHAR strTemp[_MAX_PATH];
    _stprintf(strTemp, _T("%s\\shell\\open\\command"), strAppKey);
    ::RegCreateKey(HKEY_CLASSES_ROOT, strTemp, &hKey);
    _stprintf(strTemp, _T("%s \"%%1\""), strAppName);
    ::RegSetValue(hKey, _T(""), REG_SZ, strTemp, _tcslen(strTemp)+1);
    ::RegCloseKey(hKey);
}

QDemoWinApp::QDemoWinApp(void)
{
}

QDemoWinApp::~QDemoWinApp(void)
{
}

QDemoWinApp theApp;
CGragh gGragh;

BOOL QDemoWinApp::InitInstance()
{
    BOOL bIsRegester = CheckFileRelation(_T(".itxb"), _T("itxbfile"));
    if(!bIsRegester)
    {
        RegisterFileRelation(_T(".itxb"), _T("itxbfile"), _T("F:\\itxb\\windows programme design\\10 ini and regedit\\Demo10-1\\Debug\\Demo.exe"));
    }

    LPTSTR lpszCommandName = GetCommandLine();
    CString strCommandName = lpszCommandName;
    int nOrder = strCommandName.Find(_T("\" \""));  
    if(nOrder>=0)
    {
        int l1 = strCommandName.Find("\"", 0);
        int l2 = strCommandName.Find("\"", l1+1);
        int l3 = strCommandName.Find("\"", l2+1);
        int l4 = strCommandName.Find("\"", l3+1);
        CString strFileName = strCommandName.Mid(l3+1, l4-(l3+1));
        gGragh.GetGraghFromFile(strFileName.GetBuffer(0));
    }

    QMainFrame* pMainWnd = new QMainFrame();
    assert(pMainWnd);

    m_pMainWnd = pMainWnd;

    BOOL bRet = pMainWnd->CreateEx(0, _T("www.itxueba.org"), _T("www.itxueba.org"), WS_OVERLAPPEDWINDOW, 
        CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL);
    if(!bRet)
    {
        MessageBox(NULL, _T("创建窗口失败！"), _T("创建窗口！"), 0);
        return FALSE;
    }

    pMainWnd->ShowWindow(SW_SHOW);
    pMainWnd->UpdateWindow();
    return TRUE;
}