TdxCloudStorageFileProgressCallback Type
The callback procedural type designed to track file upload and download progress.
Declaration
TdxCloudStorageFileProgressCallback = reference to procedure(const APosition: Int64; const ASize: Int64);
Parameters
Name | Type | Description |
---|---|---|
APosition | Int64 | Returns the number of downloaded or uploaded bytes. |
ASize | Int64 | Returns the size of a downloaded or uploaded file, in bytes. The parameter returns -1 if the server cannot return the downloaded file’s size. |
Remarks
Implement a TdxCloudStorageFileProgressCallback procedure to track file upload or download progress. The following code example calculates download progress as a percentage you can display in your application UI:
var
AProgress: Integer; // File download progress as a percentage
//...
if(ASize <> -1) then // If the server provides the file size
AProgress := Round(APosition/ASize * 100);
The AProgressCallback parameter in the cloud storage component’s DownloadFile and UploadFile functions references the TdxCloudStorageFileProgressCallback procedural type.
See Also