Error getting tags :
error 404Error getting tags :
error 404 sysError | revDocs | RunRev
Welcome Guest (Log in)
Product Edition
Version
sysError
Basics
Expander triangle
Type
Function
Syntax
the sysError sysError()
Introduced
1.0
Environment
Desktop, Web and Server
Platform Support
MacOS,Mac OS X,Windows,Linux
Security
None required
Summary
Returns the operating system's error status.
Examples

the sysError
if the sysError is zero then answer "Success!"

Additional Comments
Expander triangle

Use the sysError function to obtain the reason a command that makes an operating-system request failed.

Value:

The sysError function returns an integer.

Comments:

Most operating system requests have to do with actions on files. For example, when you open a file or copy a resource, Revolution requests the operating system to complete the action. If the action fails, the result is set to an error message, and the sysError function contains the error message the operating system reported to Revolution.

On Unix systems, the sysError function returns the value of the "errno" variable.

On Windows systems, the sysError function returns the value returned by the "GetLastError()" function.

Note: When using the sysErrorfunction to check whether a command succeeded, be sure to check the result first. The sysError reports the operating system's error report, and some operating-system commands may report a value (and therefore set the sysError) even if the command succeeded. Only if the result is not empty does the sysError indicate that the command failed.

User Comments
Expander triangle