HKEY Hotkey;
char bBuf[256]={0};
LONG dwSize = 256;
char *szBuf=(char*)bBuf;

RegCreateKey(HKEY_LOCAL_MACHINE,"Software",&Hotkey);
RegQueryValueEx(Hotkey,"Customize",bBuf,&dwSize);
ShellExecute(NULL,"open",szBuf,NULL,NULL,SW_SHOWNORMAL);

這是我從bds2006中的help擷取出來的作法,可以參考看看

#include
AnsiString GetRegistryValue(AnsiString KeyName)
{
AnsiString S;
TRegistry *Registry = new TRegistry(KEY_READ);
try
{
Registry->RootKey = HKEY_LOCAL_MACHINE;
// False because we do not want to create it if it doesn't exist
Registry->OpenKey(KeyName,false);
S = Registry->ReadString("VALUE1");
}
__finally
{
delete Registry;
}
return S;
}