Latest notes, articles, and news
All Chilkat classes / components use a property named LastErrorText. It provides a way to get detailed information about what happened during any Chilkat method call. The LastErrorText will contain information even when the method call is successful. In almost every case, the LastErrorText will begin with information such as this: ChilkatLog: Decrypt: DllDate: Nov 14 2021 ChilkatVersion: 9.5.0.88 UnlockPrefix: […]
If the string argument passed to UnlockComponent or UnlockBundle is NOT a purchased unlock code, then the LastErrorText will contain the exact string passed to it by your application. In this case, the string “Hello World” was passed to UnlockBundle. If UnlockComponent returns 0/false, check carefully the exact string being passed to it. Make sure the exact purchased unlock code […]
Question: I have downloaded the Chilkat Email component for POP3/SMTP. When I tried to send email by attaching a file of size of 2 MB, the email is not been sent. Could you please let me know how I can send large size attachments using the Chilkat component? Answer: There is no limitation in the Chilkat Email component. It can […]
Problem: An FTP transfer fails with the following message found in LastErrorText: 426 Connection closed; transfer aborted Solution: A local firewall may be blocking the connection. Try switching between Active and Passive mode and try again. See these examples: ASP: Active and Passive Modes in FTP SQL Server: Active and Passive Modes in FTP C#: Active and Passive Modes in […]
This sample code snippet is graciously provided by a Chilkat customer: See Also: Chilkat RSA ActiveX Reference Documentation … resource = “http://*********.cloudfront.net/something.jpg” ‘Expiration expiration = 1278680686 ‘Policy policy = “{“”Statement””:[{“”Resource””:””” & resource & _ “””,””Condition””:{“”DateLessThan””:{“”AWS:EpochTime””:” & _ expiration & “}}}]}” ‘Chilkat Component set pkey = Server.CreateObject(“Chilkat.PrivateKey”) ‘Load the private key from an RSA PEM file: private_key = pkey.LoadPemFile(“c:\pk-xxx.pem”) ‘Get the […]
(Thank you Josh for your helpful information!) “I see that occasionally information from clients (with the client’s permission) end up on the blog and thought that perhaps this one would qualify. If there is mention of the C++ Runtime, I didn’t find it. At any rate, I was having trouble getting the ChilkatDotNet4.dll to load. After a conversation with Matt, […]
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 Visual Studio to generate the event handler function. Add your […]
The following Chilkat FTP2 error was found by a Chilkat customer to be caused by firewall restrictions. I do not know the specifics of the firewall restrictions that caused the error, but the LastErrorText (with all customer information removed) is reproduced here to help identify this problem in the future. The important point is to see that the SSL/TLS handshake […]
Question: I have added HTML email file support (thanks to your excellent examples and library), but I have a question. It appears that it might be easier for the end user to save their things they want to email as a MHT file instead of HTML out of MS-Word. That way they have one file to deal with. So is […]
The correct way to pass a string to a COM/ActiveX method is to use “WideString (theString).c_bstr()” because ActiveX controls/components require BSTR’s, and not strings. BSTR’s are wide strings (Unicode) where the length of the string precedes the string in memory. The C++ Builder code to pass a string to an ActiveX function is as follows: FClientSock = new TChilkatSocket(Owner); success […]