fileexists_confirm_file_existence_.htm
Navigation: Advanced Topics > Clarion Language Utilities >====== FileExists (Confirm file existence) ====== | |
FILEEXISTS( filename )
FILEEXISTS | Confirm the existence of a file |
filename | A string constant or variable containing the name of the file (and path, if applicable) |
FILEEXISTS confirms the existence of a file. If FILEEXISTS returns TRUE (1), the file exists. If FILEEXISTS returns FALSE (0), the file specified in the filename parameter does not exist.
To add support for this utility to your existing applications, you need only include the CWUTIL.INC file in the Global Map section of your program:
INCLUDE('CWUTIL.INC'),ONCE
Return Data Type: BYTE
Example:
IF NOT FILEEXISTS(GLO:NewFile) !If the file does not exist
DO CreateFile !Call the ROUTINE to create it
END
IF NOT FILEEXISTS('C:\INVOICE\Config.dat') !Does the config file exists
InitConfig !Call init procedure
END
fileexists_confirm_file_existence_.htm.txt · Last modified: 2021/04/15 15:57 by 127.0.0.1