bool checkAssociation(const QString & extension)
{
if(!isSupportAssociation()) return false;
#ifndef Q_WS_WIN
return false;
#else
/*! The HKEY_CLASSES_ROOT subtree is a view formed by merging
* HKEY_CURRENT_USER\Software\Classes and
* HKEY_LOCAL_MACHINE\Software\Classes
*/
QSettings RegCR("HKEY_CLASSES_ROOT", QSettings::NativeFormat);
QSettings RegCU("HKEY_CURRENT_USER", QSettings::NativeFormat);
QString ext("." + extension);
QString ProgID = makeProgID(extension);
QString fileName = QFileInfo(qApp->applicationFilePath()).fileName();
QString FileExtsKey = QString("Software/Microsoft/Windows/CurrentVersion/Explorer/FileExts/") + ext;
/// Windows 7:"/UserChoice/Progid" ; XP: "/Progid"
QString CurClassId = (QSysInfo::WindowsVersion >= QSysInfo::WV_VISTA)
? RegCU.value(FileExtsKey + "/UserChoice/Progid").toString()
: RegCU.value(FileExtsKey + "/Progid").toString();
QString CurAppId = RegCU.value(FileExtsKey + "/Application").toString(); /// Windows XP
bool isRegistered = false;
if (QSysInfo::WindowsVersion >= QSysInfo::WV_NT){
if (!CurClassId.isEmpty()) {
isRegistered = (CurClassId == ProgID) || (0 == CurClassId.compare(fileName, Qt::CaseInsensitive))
|| (0 == CurClassId.compare(QString("Applications\\%1").arg(fileName), Qt::CaseInsensitive));
}else if (!CurAppId.isEmpty()){
//If user uses Open With..., explorer creates it's own ClassId under Application, like "smplayer.exe"
isRegistered = (CurAppId == ProgID) || (0 == CurAppId.compare(fileName, Qt::CaseInsensitive));
}else{
//No classId means that no associations exists in Default Programs or Explorer
//Check the default per-user association
isRegistered = (RegCU.value("Software/Classes/" + ext + REG_DEFAULT).toString() == ProgID);
}
}
//Finally, check the system-wide association
//若CurClassId或CurAppId不为空，说明用户在“打开方式”中选择了其他程序，优先级高，会覆盖其他设置。
if (!isRegistered && CurClassId.isEmpty() && CurAppId.isEmpty())
isRegistered = (RegCR.value(ext + REG_DEFAULT).toString() == ProgID);
return isRegistered && hasProgID(ProgID);
#endif // Q_WS_WIN
}
static bool hasProgID(const QString &ProgID)
{
QSettings RegCR("HKEY_CLASSES_ROOT", QSettings::NativeFormat);
QSettings RegCU("HKEY_CURRENT_USER", QSettings::NativeFormat);
RegCU.beginGroup("Software/Classes");
QString key = ProgID + "/shell/open/command/.";
QString appPath = qApp->applicationFilePath();
appPath.replace('/', '\\');
QString expect = QString("\"%1\" \"%2\"").arg(appPath, "%1"); // If it is set file association by this app, the value of key @key will be like this.
if (RegCR.childGroups().contains(ProgID)) {
return RegCR.value(key).toString() == expect;
} else if (RegCU.childGroups().contains(ProgID)) {
return RegCU.value(key).toString() == expect;
} else {
return false;
}
}
//Associates all extensions in the fileExtensions list with current app.
//Returns number of extensions processed successfully.
int WinFileAssoc::CreateFileAssociations(const QStringList &fileExtensions)
{
if (QSysInfo::WindowsVersion == QSysInfo::WV_VISTA) {
return VistaSetAppsAsDefault(fileExtensions);
}
QSettings RegCR("HKEY_CLASSES_ROOT", QSettings::NativeFormat); //Read only on NT+
QSettings RegCU("HKEY_CURRENT_USER", QSettings::NativeFormat);
if (!RegCU.isWritable() || RegCU.status() != QSettings::NoError)
return 0;
if (RegCR.status() != QSettings::NoError)
return 0;
if (QSysInfo::WindowsVersion < QSysInfo::WV_NT && !RegCR.isWritable()) //Win98
return 0;
//Check if classId exists in the registry
if (!RegCR.contains(m_ClassId) && !RegCU.contains("Software/Classes/" + m_ClassId)) {
//If doesn't exist (user didn't run the setup program), try to create the ClassId for current user.
if (!CreateClassId(QApplication::applicationFilePath(), "SMPlayer2 Media Player"))
return 0;
}
int count = 0;
foreach(const QString & fileExtension, fileExtensions) {
QString ExtKeyName = QString("Software/Microsoft/Windows/CurrentVersion/Explorer/FileExts/.%1").arg(fileExtension);
QString ClassesKeyName = m_ClassId;
QString BackupKeyName = ClassesKeyName + "/" + fileExtension;
QString CUKeyName = "Software/Classes/." + fileExtension;
//Save current ClassId for current user
QString KeyVal = RegCU.value(CUKeyName + "/.").toString();
if (KeyVal.length() == 0 || KeyVal == m_ClassId) {
//No registered app for this extension for current user.
//Check the system-wide (HKEY_CLASSES_ROOT) ClassId for this extension
KeyVal = RegCR.value("." + fileExtension + "/.").toString();
}
if (KeyVal != m_ClassId)
RegCU.setValue(CUKeyName + "/MPlayer_Backup", KeyVal);
//Save last ProgId and Application values from the Exts key
KeyVal = RegCU.value(ExtKeyName + "/Progid").toString();
if (KeyVal != m_ClassId && KeyVal != m_ClassId2)
RegCU.setValue(ExtKeyName + "/MPlayer_Backup_ProgId", KeyVal);
KeyVal = RegCU.value(ExtKeyName + "/Application").toString();
if (KeyVal != m_ClassId || KeyVal != m_ClassId2)
RegCU.setValue(ExtKeyName + "/MPlayer_Backup_Application", KeyVal);
//Create the associations
if (QSysInfo::WindowsVersion >= QSysInfo::WV_NT) {
RegCU.setValue(CUKeyName + "/.", m_ClassId); //Extension class
RegCU.setValue(ExtKeyName + "/Progid", m_ClassId); //Explorer FileExt association
} else {
//Windows ME/98/95 support
RegCR.setValue("." + fileExtension + "/.", m_ClassId);
}
if (RegCU.status() == QSettings::NoError && RegCR.status() == QSettings::NoError)
count++;
}
