The registry is like a file system with different access rights for the different keys. Navigate to your key using regedit and open the 'Permissions' command from the context menu to see the permissions for specific users and groups. Some keys have restricted access even for administrators (SAM, SECURITY). Such keys can be only accessed by the SYSTEM user.
So the answer to your question is: You must have the access rights which are usually granted when you open the key using the account of the key's owner.
At the moment I know only two reasons for denied permissions when trying to write to HKCU:
Using RegOpenKeyEx(), the key was not opened with the KEY_SET_VALUE or KEY_WRITE access right.
Using RegOpenKey() instead of RegOpenKeyEx().
Regarding the second reason I will cite the MSDN:
The RegOpenKey function uses the default security access mask to open a key. If opening the key requires a different access right, the function fails, returning ERROR_ACCESS_DENIED. An application should use the RegOpenKeyEx function to specify an access mask in this situation.
If this does not solve your problem, you should show us the code that fails (including the RegOpenKeyEx() call).
Sir i have an base class which has an pure virtual member function..i have made it and also made other member function. now this is a general base class.i want that member member functions in derived class by their virtual function in which i can get the member function of base class and can do individual operation in each derived class.. what will be the syntax code for this problem how i can do these things? please reply my soon because this is my last day of assignment.. please
You will get a EN_KILLFOCUS message,when the focus switch from CIPAddressCtrl to another control, and this is normal case. But when you click at the dots among four ip fields,
you will get the EN_KILLFOCUS message too(with SPY++), which is not what I want, because I just want to do data validation when
the CIPAddressCtrl lost focus. How can I filer the EN_KILLFOCUS message when I click the dots???
Not sure if this will work or not, but in the message handler for EN_KILLFOCUS, check where the focus "went" with GetFocus[^] or CWnd::GetFocus[^] (whichever suits you best) and determine if the newly focused control is still "inside" the IP address control. I suspect it has four separate edit fields for each segment and all four have the IP address control thing set as its parent, so i supose a GetParent[^] or CWnd::GetParent[^] call can tell you if the user is still editing the IP address or is trying to leave the control altogether.
If you try this, do share with us if it worked or not, thanks in advance.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> If it doesn't matter, it's antimatter.<