BorlandTalk.com Borland discussion newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Registry Help with Vista          BorlandTalk.com Forum Index -> C++ Builder (Language C++) View previous topic :: View next topic   Author Message LarryJ Guest Posted: Thu Apr 26, 2007 8:10 am    Post subject: Registry Help with Vista I have a few people using my software with Windows Vista and the registration values that my program writes to the registry are not being read from the registry when the program starts. Below is the registry Read Write code that I am using? Do I need to change the RegistryKey value to be compatible with Windows Vista? //==================================================== RegistryKey = "\\Software\\MYCompany"; RegFolder1 = "\\MW3"; RegFolder2 = "\\AT3"; AnsiString First, Last, Source, S36, //==================================================== try { Registry = new TRegistry( KEY_WRITE ); } catch (...) { return; } try { Registry->RootKey = HKEY_CURRENT_USER; Registry->OpenKey(RegistryKey + RegFolder1, true); Registry->WriteString("First", First); Registry->WriteString("Last", Last); Registry->WriteString("S36", S36); Registry->CloseKey(); } catch (...) { delete Registry; Registry=NULL; return; } delete Registry; Registry=NULL; try { Registry = new TRegistry( KEY_READ ); } catch (...) { fail=true; } try { Registry->RootKey = HKEY_CURRENT_USER; ck5 = Registry->KeyExists(RegistryKey + RegFolder1); if(ck5==true){ Registry->OpenKeyReadOnly(RegistryKey + RegFolder1); if(Registry->ValueExists("First")) {HDFstName = Registry->ReadString("First");}else{HDFstName="";} if(Registry->ValueExists("Last")) {HDLstName = Registry->ReadString("Last");}else{HDLstName="";} if(Registry->ValueExists("S36")) {S36 = Registry->ReadString("S36");}else{S36="";} Registry->CloseKey(); } if(ck5==false){ fail=true; } } catch (...) { fail=true; } delete Registry; Registry=NULL; Thanks Larry Johnson Back to top Miguel Gimenez Guest Posted: Thu Apr 26, 2007 3:51 pm    Post subject: Re: Registry Help with Vista LarryJ wrote: Quote: I have a few people using my software with Windows Vista and the registration values that my program writes to the registry are not being read from the registry when the program starts. Below is the registry Read Write code that I am using? Do I need to change the RegistryKey value to be compatible with Windows Vista? //==================================================== RegistryKey = "\\Software\\MYCompany"; RegFolder1 = "\\MW3"; RegFolder2 = "\\AT3"; AnsiString First, Last, Source, S36, //==================================================== try { Registry = new TRegistry( KEY_WRITE ); } catch (...) { return; } try { Registry->RootKey = HKEY_CURRENT_USER; Registry->OpenKey(RegistryKey + RegFolder1, true); Registry->WriteString("First", First); Registry->WriteString("Last", Last); Registry->WriteString("S36", S36); Registry->CloseKey(); } catch (...) { delete Registry; Registry=NULL; return; } delete Registry; Registry=NULL; try { Registry = new TRegistry( KEY_READ ); } catch (...) { fail=true; } try { Registry->RootKey = HKEY_CURRENT_USER; ck5 = Registry->KeyExists(RegistryKey + RegFolder1); if(ck5==true){ Registry->OpenKeyReadOnly(RegistryKey + RegFolder1); if(Registry->ValueExists("First")) {HDFstName = Registry->ReadString("First");}else{HDFstName="";} if(Registry->ValueExists("Last")) {HDLstName = Registry->ReadString("Last");}else{HDLstName="";} if(Registry->ValueExists("S36")) {S36 = Registry->ReadString("S36");}else{S36="";} Registry->CloseKey(); } if(ck5==false){ fail=true; } } catch (...) { fail=true; } delete Registry; Registry=NULL; Thanks Larry Johnson Did the write part work? Use regedit to verify this point. -- Regards Miguel Gimenez Back to top Thomas Maeder [TeamB] Guest Posted: Thu Apr 26, 2007 9:43 pm    Post subject: Re: Registry Help with Vista "LarryJ" <LarryJ33 (AT) austin (DOT) rr.com> writes: Quote: I have a few people using my software with Windows Vista and the registration values that my program writes to the registry are not being read from the registry when the program starts. Below is the registry Read Write code that I am using? Do I need to change the RegistryKey value to be compatible with Windows Vista? //==================================================== RegistryKey = "\\Software\\MYCompany"; RegFolder1 = "\\MW3"; RegFolder2 = "\\AT3"; AnsiString First, Last, Source, S36, //==================================================== try { Registry = new TRegistry( KEY_WRITE ); The first thing I'd do is check whether TRegistry instances really have to be created dynymically. If not, changing Registry's type to TRegistry will greatly simplify your code. Quote: } catch (...) { return; } try { Registry->RootKey = HKEY_CURRENT_USER; Registry->OpenKey(RegistryKey + RegFolder1, true); OpenKey() returns bool. You should check the return value before blindly going on. Quote: Registry->WriteString("First", First); Registry->WriteString("Last", Last); Registry->WriteString("S36", S36); Registry->CloseKey(); } catch (...) { WriteString() and CloseKey() are documented to throw an exception if they fail. Do you ever get into on of the catch clauses? Back to top Remy Lebeau (TeamB) Guest Posted: Thu Apr 26, 2007 11:22 pm    Post subject: Re: Registry Help with Vista "Thomas Maeder [TeamB]" <maeder (AT) glue (DOT) ch> wrote in message news:m2r6q7krxj.fsf (AT) glue (DOT) ch... Quote: The first thing I'd do is check whether TRegistry instances really have to be created dynymically. Yes, they do. All classes derived from the VCL TObject class must be instantiated dynamically on the heap. Quote: WriteString() and CloseKey() are documented to throw an exception if they fail. WaiteString() will raise an exception, but CloseKey() will not. Gambit Back to top Thomas Maeder [TeamB] Guest Posted: Fri Apr 27, 2007 1:26 am    Post subject: Re: Registry Help with Vista "Remy Lebeau \(TeamB\)" <no.spam (AT) no (DOT) spam.com> writes: Quote: The first thing I'd do is check whether TRegistry instances really have to be created dynymically. Yes, they do. All classes derived from the VCL TObject class must be instantiated dynamically on the heap. I was afraid of that. But still, using a std::auto_ptr will still simplify things a lot. 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