Registering a Port

Hi all,

There is some problem while registering my virtual serial port, so
please find the code below this message and let me know if there is
any mistake and if there is anything i've just ignored completely.

The code gets the last opened port index number and increments it by
taking it to a variable and converts it to a string as the
regsetvalueex takes the pointer to a null terminated string as the
parameter and closes it.

//The registry part of code in the com_init function

if (RegOpenKeyEx(HKEY_LOCAL_MACHINE,L"HKEY_LOCAL_MACHINE\\Drivers\
\BuiltIn\\VSP", 0, 0, &hKey) == ERROR_SUCCESS)

{

TCHAR szDriverKey[255];

DWORD dwSize = 255;

DWORD dwType,ManagePort;

if (RegQueryValueEx(hKey, L"Key", 0, &dwType, (BYTE *)szDriverKey,
&dwSize) == ERROR_SUCCESS)

{
printf("after query value");
RegCloseKey(hKey);

if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, szDriverKey, 0, 0, &hKey) ==
ERROR_SUCCESS)

{
printf("after open key");
dwSize=4;
ManagePort=0;
if (RegQueryValueEx(hKey, L"ManagePort", 0, &dwType, (BYTE *)&dwPort,
&dwSize) != ERROR_SUCCESS)

//dwPort = 0;
Index=(int)dwPort;
++Index;
while(Index>0)
{
j=Index%10;
Index=Index/10;
p[k++]=j+'0';
}
p[k]='\0';

while(k!=0)
{
rev[l++]=p[--k];
}
rev[l]='\0';
ptr=rev;
RegSetValueEx(hKey,(LPCWSTR)ptr,0,REG_DWORD,
(BYTE*)&dwPort,sizeof(DWORD));

RegCloseKey(hKey);

}


thanks,
Manu
.