fOpen (Example)

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Example: Opening an external file
Example: Opening and/or creating an external file
Example: Opening an external file (WEBDEV)
Example: Opening and/or creating an external file (WEBDEV)

fOpen (Example)

See the associated help page

Example: Opening an external file

The following code is used to open an external file. The file is opened in read/write mode. The file name and path are selected by fSelect.

// Declare the variables
FileNameAndPath is string
FileID is int
// Select the file name and path
FileNameAndPath = fSelect("", "", "Selecting an external file", ...
	"External file" + TAB + "*.txt", "txt", fselCreate)
// Open file
FileID = fOpen(FileNameAndPath, foReadWrite)
// Display an error message if no file was opened
IF FileID = -1 THEN
   	Error(ErrorInfo(errMessage))
ELSE
   	// Processes in the open file
   	...
   	// End of processes
END

Example: Opening and/or creating an external file

The following code is used to open and/or to create an external file. The file is opened in read/write mode. The file name and path are selected by fSelect. If the file already exists, this file will not be recreated (foCreateIfNotFound constant).

// Declare the variables
FileNameAndPath is string
FileID is int
// Select the file name and path
FileNameAndPath = fSelect("", "", "Selecting an external file", ...
	"External file" + TAB + "*.txt", "txt", fselCreate)
// Open file
FileID = fOpen(FileNameAndPath, foReadWrite + foCreateIfNotFound)
// Display an error message if the creation was not performed
IF FileID = -1 THEN
   	Error(ErrorInfo(errMessage))
ELSE
   	// Processes in the open file
   	...
   	// End of processes
END

Example: Opening an external file (WEBDEV)

The following code is used to open an external file. The file is opened in read/write mode.

// Declare the variables
FileNameAndPath is string
FileID is int
// Select the file name and path
FileNameAndPath = "C:\MyDirectories\File.txt"
// Open file
FileID = fOpen(FileNameAndPath, foReadWrite)
// Display an error message if no file was opened
IF FileID = -1 THEN
	Error(ErrorInfo(errMessage))
ELSE
	// Processes in the open file
	...
	// End of processes
END

Example: Opening and/or creating an external file (WEBDEV)

The following code is used to open and/or to create an external file. The file is opened in read/write mode. If the file already exists, this file will not be recreated (foCreateIfNotFound constant).

// Declare the variables
FileNameAndPath is string
FileID is int
// Select the file name and path
FileNameAndPath = "C:\MyDirectories\File.txt"
// Open file
FileID = fOpen(FileNameAndPath, foReadWrite + foCreateIfNotFound)
// Display an error message if the creation was not performed
IF FileID = -1 THEN
	Error(ErrorInfo(errMessage))
ELSE
	// Processes in the open file
	...
	// End of processes
END

Versión mínima requerida

Versión 9

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Última modificación: 07/01/2025

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