There are several ways a file may be opened by the Hex Editor.
Use the File » Open » Open File… command to open the standard File Open dialog. Select a file or multiple files and click the Open button. The "Open as read-only" flag may be used to have the editor open file(s) in read-only mode, preventing the modification of original file(s).
Files you select may be located either on the local computer, or on the remote computer. Make sure your connection to the remote host is fast enough before opening the remote file in the editor. Usually, 10Mbit connection will be enough for most editing tasks.
If you chose an option to integrate with Windows Explorer during Hex Editor installation, the "Edit with HHD Hex Editor" command appears when you right click on the selected file(s) in the Windows Explorer. Select this option to open all selected files in the Hex Editor.
This will launch the Hex Editor (if it is not already running) and instruct it to open all the files you selected in the folder.
Note: Windows Explorer references the extension DLL that is used to implement the right-click menu command. If you try to uninstall the product right after using the command, it will fail to delete all installed files and will have to schedule a reboot to finish installation.
You may select a file or a number of files in Windows Explorer (or any other compatible application) and drag them to the running instance of the Hex Editor. This will instruct the editor to open all dragged files.
Launching the Hex Editor with a list of files in its command line instructs the editor to open all of them.
Remember that all file names that contain spaces must be enclosed in the double quotation marks. There is a limit enforced by the operating system to the maximum length of the command line. Generally, it should be less than 256 characters.
Example:
HexFrame.exe c:\temp\rom.dat c:\windows\system32\calc.exe "c:\Program Files\Windows NT\dialer.exe"
Running this command will load the Hex Editor and open all specified files.