Working with Custom File Types

When the type of file you want to detect is not already supported directly by Device Control, you can extend the file type recognition capability by configuring a custom filter.

  • Manage Custom File Types Dialog
    Use the Manage Custom File Types dialog to add, edit and remove custom file type definitions.
  • New Custom File Type dialog
    Use the New Custom File Type dialog to define the steps required to detect the file type you want to limit access to. It is launched by clicking Add on the Manage Custom File Types dialog.
  • Edit Custom File Type Dialog
    Use the Edit Custom File Types dialog to add or change steps required to detect the file type you want to limit access to. It is launched by selecting an existing definition in the Manage Custom File Types dialog and clicking Edit.
  • Search for Bytes Dialog
    Use the Search for Bytes dialog to provide a string of bytes unique to the file type you want to detect and limit access to. It is launched in the New Custom File Type or Edit Custom File Type dialogs by selecting Add > Search for Bytes.
  • Read a Variable dialog
    Use the Read a Variable dialog to define a variable that reads an integer. It is launched in the New Custom File Type or Edit Custom File Type dialogs by selecting Add > Read a Variable.
  • Change Current Position Dialog
    Use the Change Current Position dialog to move the current position used in later steps. It is launched in the New Custom File Type or Edit Custom File Type dialogs by selecting Add > Change Current Position.
  • Check End of File Dialog
    Use the Check End of File dialog to add a step that succeeds if the current position is the end of the file. It is launched in the New Custom File Type or Edit Custom File Type dialogs by selecting Add > Check End of File.
  • Adding a Custom File Type Filter
    You can add a custom file type to the File Filters collection by creating a custom file type filter and configuring steps to identify the file type.
  • Editing a Custom File Type Filter
    You can edit the configuration of an existing custom file type filter to improve its efficiency and assure the consistent limiting of access to specific file types.
  • Removing a Custom File Type Filter
    You can remove selected custom file type filters from the available list.

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