Adding a Callback Event Handler in VB.NET

Dim “WithEvents” Dim WithEvents ftp As Chilkat.Ftp2 Add some code to create a new instance of the object. Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click ftp = New Chilkat.Ftp2() ftp.EnableEvents = True ftp.HeartbeatMs = 100 … Select the “ftp” object. Select the event. This causes …

PercentDone callback counts as an AbortCheck

Question: “I’ve got the Chilkat C++ libs linked with my project, and am using the HTTP classes successfully. One thing is confusing me, though. I’ve derived a class from CkHttpProgress.h and overridden AbortCheck(…) to provide cancellation support. However, AbortCheck(…) never gets called. At first, I thought perhaps the HTTP retrieval was occurring too …

Aborting in C++

The technique for aborting any time-consuming Chilkat C++ method call follows this recipe: Declare your own class that derives from the appropriate Chilkat progress monitoring class.  For CkMailMan it is CkMailManProgress (as shown below).  For other Chilkat classes it is CkHttpProgress, CkFtpProgress, CkImapProgress, CkZipProgress, etc. Create an implementation for the …

SendBufferSize/MaxPacketSize can make progress events more frequent in FTP and SSH/SFTP

Question: I’ve downloaded the trial version of your FTP2 ActiveX control. I’m using it in Visual FoxPro 9, but need to have a progress bar to track an upload. When using your asynchronous example code, the progress bar jumps from 0 to 524288 and so on. I need much more …

SFTP Progress Monitoring and Abort (C#)

Here is an example for monitoring the progress of an SFTP file transfer: void sftp_OnPercentDone(object sender, Chilkat.PercentDoneEventArgs args) { progressBar1.Value = args.PercentDone; // To abort at any point, you may set args.Abort = true // args.Abort = true; } void sftp_OnAbortCheck(object sender, Chilkat.AbortCheckEventArgs args) { // See http://cknotes.com/?p=149 for more …

VB.NET HTTP Download with percent-done progress monitoring

Here is an example: Dim WithEvents http As Chilkat.Http Private Sub http_OnPercentDone(ByVal sender As Object, ByVal args As Chilkat.PercentDoneEventArgs) Handles http.OnPercentDone ProgressBar1.Value = args.PercentDone End Sub Private Sub HttpDownloadTest() http = New Chilkat.Http() Dim success As Boolean ‘ Any string unlocks the component for the 1st 30-days. success = http.UnlockComponent(“Anything …

SFTP Progress Monitoring in C++

This C++ example demonstrates how to derive a class from the CkSFtpProgress base class to implement progress monitoring and abort for SFTP: // To monitor SFTP progress, derive a class from CkSFtpProgress and // provide implementations for AbortCheck and PercentDone: class MySFtpProgress : public CkSFtpProgress { public: MySFtpProgress() { } …