FileCheckUsage()
Summary
Checks whether files are in use by Maptitude.
Syntax
result = FileCheckUsage(array file_names, string type)
| Argument | Contents |
|---|---|
| file_names | An array of strings containing the names of files |
| type | The file type; if type is null all types are checked |
| Type | Description |
|---|---|
| CDF | Checks only against files that are part of a .CDFthat is open in the session, such as .CDF, .CDX, and .STY |
| DBD | Checks only against files that are part of a .DBDthat is open in the session, such as .DBD, .R0, .PTS, and .STY |
| SET | Checks only against files that could be used by a set; when sets are large, the index becomes file-based |
In addition, any table type may be used to check against dataviews of that type. For a list of table types, see OpenTable().
Returns
A string containing "True" or "False" as appropriate.
Notes
-
If type is null then FileCheckUsage() checks if the file is in use by any of the following that are open in the session:
-
DBDs (standard geographic files)
-
CDFs (compact geographic files)
-
Sets (file-based indices)
-
Dataviews
-
Temporary files
-
Images
-
Example
on escape do Return(false) end
openfile:
fname = ChooseFileName(d_exts_table, "Save Table As", {{"Replace Warning", "False"}})
if FileCheckUsage({fname},) then do
ShowMessage("File already in use. Please choose again.")
goto openfile
end
on escape defaultSee Also
| Function | Summary |
|---|---|
| ChooseFile() | Gets the name of an existing file using the Windows File Open dialog box |
| GetDirectoryInfo() | Gets a listing of the contents of a directory |
| GetFileInfo() | Gets information about a file |
| SearchFilePath() | Searches for the path for a filename |