Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756
(http://support.microsoft.com/kb/322756/
)
How to back up and restore the registry in Windows
RunOnceEx has the following features:
- Status: A dialog box is displayed while the items contained in the registry key are being processed. The entries to be processed are grouped into sections and the dialog box highlights the current section being processed. You can disable the status dialog box feature.
- Performance: The majority of the commands contained in the Run and RunOnce registry keys create separate processes, which is inefficient. The RunOnceEx registry key does not create a separate process. The RunOnceEx registry key also supports a dependency list of DLLs that remain loaded while either all the sections or some of the sections are being processed.
- Error Handling: If an exception occurs while calling a function in a DLL, the exception is caught and an error dialog box is displayed to the user. You can suppress this error dialog box by using a flag in the RunOnceEx registry key. You can also set a flag to enable log errors and run the RunOnceEx registry key.
- Deterministic: The RunOnceEx registry key sorts the entries and sections alphabetically to force a deterministic order.
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