Opening the registry to obtain string values 1

[bikermouse]

Regarding using the registry,
does anyone know how to retrive string values (address paths) from REG_SZ keys

here's what Ive got so far

RegOpenKeyEx(HKEY_CLASSES_ROOT,"CLSID",0,KEY_ALL_ACCESS,&hkey);

RegQueryValueEx(????????????????);
RegCloseKey(hkey);

"CLSID" can be replaced with say "BryceScene" or whathave you and the registry appears to open and close but I am unable to get the Query function to operate right.

any help?
Thanks,
- TJ

 

[tchouch]

Try so:
HKEY myKey = NULL;
char stringToRead[1024]; //You should have enough memory here
int cbBufferSize = 1023;
DWORD dwType = REG_SZ;
//Read only
int err = RegOpenKeyEx(HKEY_CLASSES_ROOT, "KeyYouWishToOpen", 0, KEY_QUERY_VALUE, &myKey);
if(err == 0)
err = RegQueryValueEx(myKey, "SubKeyWitchValueYouWishToRead", 0, &dwType, stringToRead, &cbBufferSize);
RegCloseKey(myKey);

"KeyYouWishToOpen" - You must enter full path to Your key, for example: "SYSTEM\\CurrentControlSet\\Services\\lanmanserver\\parameters"
If You are not Administrator (Win NT/2000/XP), You probably do not have write access to registry.

 

[bikermouse]

tchouch,
Thank you. I'll try this. It looks as though it should work.
at this point I only need read access.
- TJ

 

[bikermouse]

tchouch,
I got it to work like this - it doesen't seem to like two calls to hkey both refering to query at the same time, so I was forced to do it this way, but this seems neater anyway.
(this example finds bryce5.exe path from the .br5 extention)

Again thank you for your help.
- TJ
////////////////////////////////////////////////////////////int readkey(char * keyname);
extern char strang[];
///////////////////////////////////////////////////////////////////////////////////////
int manipulate()
{
char strang2[1024];
int rv;

rv = readkey(".br5"
if(rv != 13) return rv;
strcpy(strang2,strang);
strcat(strang2,"\\Shell\\open\\command"
strang[0]= 0;
rv = readkey(strang2);
return rv;
}
////////////////////////////////////////////////////////////
int readkey(char * keyname)
{
if(keyname == NULL)
{
return 10;
}
else
{
HKEY hkey = NULL;
DWORD dwType = REG_SZ;
int cbBufferSize = 1023;
if(RegOpenKeyEx (HKEY_CLASSES_ROOT,keyname,0,KEY_QUERY_VALUE,&hkey ) != ERROR_SUCCESS)
{
return 11;
}
if(RegQueryValueEx(hkey,"",0,&dwType,strang,&cbBufferSize) != ERROR_SUCCESS)
{
RegCloseKey (hkey);
return 12;
}
RegCloseKey(hkey);
}
return 13;
}
////////////////////////////////////////////////////////////