Crestron SIMPL+ - Page 149

Crestron SIMPL+
®
Software
Language Reference Guide - DOC. 5797G SIMPL+
®
z 139
Examples:
(Refer to "File Functions Overview"on page 116)
Example 1: Open a read only file:
SIGNED_INTEGER nFileHandle;
StartFileOperations();
nFileHandle = FileOpen ( “MyFile”, _O_RDONLY );
IF (nFileHandle < 0)
{
PRINT(“Error Opening File MyFile\n”);
}
EndFileOperations();
Example 2: Open an existing file to log data to the end
SIGNED_INTEGER nFileHandle;
StartFileOperations();
nFileHandle = FileOpen ( “MyFile”, _O_WDONLY | _O_APPEND);
IF (nFileHandle < 0)
{
PRINT(“Error Opening File MyFile\n”);
}
EndFileOperations();
Example 3: Truncate an existing file and get rid of previous contents. If it does not
exist, create it.
SIGNED_INTEGER nFileHandle;
StartFileOperations();
nFileHandle = FileOpen ( “MyFile”, _O_WDONLY | _O_CREAT |
_O_TRUNC);
IF (nFileHandle < 0)
{
PRINT(“Error Opening File MyFile\n”);
}
EndFileOperations();
Example 4: Continue adding to the end of an existing log file, or create it if it does
not already exist.
SIGNED_INTEGER nFileHandle;
StartFileOperations();
nFileHandle = FileOpen ( “MyFile”, _O_WDONLY | _O_APPEND
| _O_CREAT);
IF (nFileHandle < 0)
{
PRINT(“Error Opening File MyFile\n”);
}
EndFileOperations();