Accessing registry fails in OnEnd

[Branstar]

For some reason my RegDBGetKeyValueEx call in the OnEnd function fails everytime - the key exists and has a value, the exact same call works when called in other parts of the script and only fails in this function.

Does anyone know why this would fail?

Here's the code:

function OnEnd()
STRING componentSelected, tempKey;     
BOOL result;
begin          
tempKey = TEMP_REG_KEY;
 
// If not removing everything 
if (REMOVEALLMODE == 0 && MAINTENANCE == 0) then        	
// If component is selected for install  
result = getKeyValue(tempKey, "ComponentSelected", componentSelected);
if (componentSelected= "TRUE") then
MessageBox ("Component selected to install.",INFORMATION);  
else
MessageBox ("Component not selected to install.",INFORMATION);  
endif;
endif;
             
deleteKey(tempKey);	

return 0;   
end;

And for the getKeyValue function - includes plenty of debug messages

prototype BOOL getKeyValue(STRING, STRING, BYREF STRING);  

// Assumes STRING value for key                               
function BOOL getKeyValue(szKey, szName, szValue)
	NUMBER nvType, nvSize, result;
	STRING szMsg;	
begin                
	// Retrieve key value information.    
	result =  RegDBGetKeyValueEx (szKey, szName, nvType, szValue, nvSize);
    if (result < 0) then                                                
        MessageBox ("RegDBGetKeyValueEx failed.", SEVERE); 
        return 1;
    else 
        // Check to see if the value returned is the same as the value set. 
        if (nvType != REGDB_STRING) then 
            MessageBox ("Type comparison failed.", SEVERE); 
            return 1;
        endif; 

        // Display what RegDBGetKeyValueEx retrieved. 
        szMsg = "%s has value: %s\n\nThis data is %d bytes."; 
        SprintfBox (INFORMATION, "", szMsg, szName, szValue, nvSize); 
    endif; 
end;

[RobertDickau]

How is getKeyValue defined? Does its return value "result" tell you anything?

[Branstar]

Thanks for your reply;

I've added the code for the getKeyValue function to my first post. The 'result' is only the success of the function, the value of the registry is stored in a parameter passed in by reference.

[RobertDickau]

Perhaps the registry root you're reading from changes between functions? If so, you'll want another call to RegDBSetDefaultRoot before RegDBGetKeyValueEx.

[Branstar]

Hurrah! I tried setting the root again as you suggested and the registry operations are now working; thanks for your help 🙂