Need help with REGISTRY

[skinah]

heres a function that I'm trying to write. I call the function with a line like this..

AddRegE("HKEY_LOCAL_MACHINE\\System\\CurrentControlSet\\Control\\MediaResources\\AudioDSP24"

int AddRegE (char strKey[512])
{
CRegKey MyRegFix;
MyRegFix.SetKeyValue(strKey,"1","ValueCard"

return 0;

};

Why doesm't this change the key's value in my registry ? the program compiles and runs fine. Sorry if this is really simple but I have just started learning c++ , any help would be appreciated. I have a feeling it may have somthing to do with HKEY but I have no idea how to create a handle or why I need to.

Thanks Heaps,

Matt

 

[skinah]

I have made some headway but still dont know why my last one didn't work. This time i pass this string to the function...

AddRegE("System\\CurrentControlSet\\Control\\MediaResources\\AudioDSP24"


int AddRegE (char strKey[512])
{

HKEY root;
char szData[2];
DWORD dwBufSize = 2;

RegOpenKeyEx(HKEY_LOCAL_MACHINE, strKey, 0, KEY_ALL_ACCESS, &root);

const TCHAR szRegRoot[] = _T("System\\CurrentControlSet\\Control\\MediaResources\\AudioDSP24"

RegOpenKeyEx(HKEY_LOCAL_MACHINE, szRegRoot, 0, KEY_READ, &root);

RegSetValueEx(root, "ValueCard", 0, REG_SZ,(const BYTE*)&szData, dwBufSize);

return 0;

};


This time the value of the key is changed but as I can't set the value of szData I can't control what the value is changed to. Using the line
szData="0"; gives me an error.....

error C2106: '=' : left operand must be l-value


Please help and explain why I went wrong. I really want to learn C++ instead of just trying to understand how other ppls code works.

Thanks for your help.