Url Delphi ActiveX Reference Documentation

TChilkatUrl

Current Version: 11.0.0

Provides an object representation of a URL and easy access to the parts of the URL.

Importing the Chilkat ActiveX into Delphi

Important: When upgrading to a new version of Chilkat, make sure to re-imported ActiveX DLL into Delphi to regenerate the files described below.


Chilkat v9.5.*: If using Chilkat v9.5.*, then use "Chilkat_v9_5_0_TLB" instead of "Chilkat_TLB", and the DLLs are named ChilkatAx-9.5.0-win32.dll (or ChilkatAx-9.5.0-x64.dll).


Two things are required to use an ActiveX in Delphi:

  1. The ActiveX DLL needs to be registered via regsvr32 on the system where the Delphi application runs. See How To Register ActiveX DLLs for detailed information.
  2. See also: ActiveX Registration Tutorial
  3. The ActiveX component needs to be "imported". Use the Delphi Import Component Wizard to import the Chilkat type library. This creates the following files: Chilkat_TLB.pas and Chilkat_TLB.dcr. The Chilkat_TLB.pas should be added to your project.

To import the Chilkat type library, do the following:

  1. In the Delphi RAD Studio, select the menu item "Component" --> "Import a Type Library".
  2. Find "Chilkat ActiveX" in the list and select it. This will only appear in the list if the ChilkatAx-win32.dll (or ChilkatAx-x64.dll) has been registered w/ regsvr32.
  3. Check the "Generate Component Wrappers" checkbox.
  4. Select a directory where the unit files (.pas and .dcr) should be generated.
  5. Select "Create Unit" and then "Finish".
  6. Add the .pas to your Delphi project.

To use a Chilkat ActiveX object in your Delphi code, add "Chilkat_TLB" to the "uses" statement. For example:

uses
  Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
  Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Chilkat_TLB;

Object Creation

var
obj: TChilkatUrl;
...
begin
obj := TChilkatUrl.Create(Self);
...
// When finished, free the object instance.
obj.Free();

Properties

DebugLogFilePath
property DebugLogFilePath: WideString

If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.

Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.

Possible causes of hangs include:

  • A timeout property set to 0, indicating an infinite timeout.
  • A hang occurring within an event callback in the application code.
  • An internal bug in the Chilkat code causing the hang.

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Frag
property Frag: WideString readonly
Introduced in version 9.5.0.49

Contains any text following a fragment marker (#) in the URL, excluding the fragment marker. Given the URI http://www.contoso.com/index.htm#main, the fragment is "main".

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Host
property Host: WideString readonly
Introduced in version 9.5.0.49

The DNS host name or IP address part of the URL. For example, if the URL is "http://www.contoso.com:8080/", the Host is "www.contoso.com". If the URL is "https://192.168.1.124/test.html", the Host is "192.168.1.124".

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HostType
property HostType: WideString readonly
Introduced in version 9.5.0.49

The type of the host name specified in the URL. Possible values are:

  • "dns": The host name is a domain name system (DNS) style host name.
  • "ipv4": The host name is an Internet Protocol (IP) version 4 host address.
  • "ipv6": The host name is an Internet Protocol (IP) version 6 host address.

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LastBinaryResult
property LastBinaryResult: OleVariant readonly

This property is mainly used in SQL Server stored procedures to retrieve binary data from the last method call that returned binary data. It is only accessible if Chilkat.Global.KeepBinaryResult is set to 1. This feature allows for the retrieval of large varbinary results in an SQL Server environment, which has restrictions on returning large data via method calls, though temp tables can handle binary properties.

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LastErrorHtml
property LastErrorHtml: WideString readonly

Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorText
property LastErrorText: WideString readonly

Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastErrorXml
property LastErrorXml: WideString readonly

Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.

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LastMethodSuccess
property LastMethodSuccess: Integer

Indicates the success or failure of the most recent method call: 1 means success, 0 means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages.

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LastStringResult
property LastStringResult: WideString readonly

In SQL Server stored procedures, this property holds the string return value of the most recent method call that returns a string. It is accessible only when Chilkat.Global.KeepStringResult is set to TRUE. SQL Server has limitations on string lengths returned from methods and properties, but temp tables can be used to access large strings.

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LastStringResultLen
property LastStringResultLen: Integer readonly

The length, in characters, of the string contained in the LastStringResult property.

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Login
property Login: WideString readonly
Introduced in version 9.5.0.49

If the URL contains a login and password, this is the login part. For example, if the URL is "http://user:password@www.contoso.com/index.htm ", then the login is "user".

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Password
property Password: WideString readonly
Introduced in version 9.5.0.49

If the URL contains a login and password, this is the password part. For example, if the URL is "http://user:password@www.contoso.com/index.htm ", then the password is "password".

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Path
property Path: WideString readonly
Introduced in version 9.5.0.49

The path (and params) part of the URL, excluding the query and fragment. If the URL is: "http://www.amazon.com/gp/product/1476752842/ref=s9_psimh_gw_p14_d0_i3?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=desktop-1", then the path is "/gp/product/1476752842/ref=s9_psimh_gw_p14_d0_i3".

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PathWithQueryParams
property PathWithQueryParams: WideString readonly
Introduced in version 9.5.0.58

The path (and params) part of the URL, including the query params, but excluding the fragment. If the URL is: "http://www.amazon.com/gp/product/1476752842/ref=s9_psimh_gw_p14_d0_i3?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=desktop-1", then then this property returns "/gp/product/1476752842/ref=s9_psimh_gw_p14_d0_i3?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=desktop-1".

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Port
property Port: Integer readonly
Introduced in version 9.5.0.49

The port number of the URL.

For example, if the URL is "http://www.contoso.com:8080/", the port number is 8080.
If the URL is "https://192.168.1.124/test.html", the port number is the default 80.
If the URL is "https://www.amazon.com/", the port number is the default SSL/TLS port 443.

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Query
property Query: WideString readonly
Introduced in version 9.5.0.49

The query part of the URL, excluding the fragment. If the URL is: "http://www.amazon.com/gp/product/1476752842/ref=s9_psimh_gw_p14_d0_i3?pf_rd_m=ATVPDKIKX0DER&pf_rd_s=desktop-1#frag", then the query is "pf_rd_m=ATVPDKIKX0DER&pf_rd_s=desktop-1".

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Ssl
property Ssl: Integer readonly
Introduced in version 9.5.0.49

1 if the URL indicates SSL/TLS, otherwise false. A URL beginning with "https://" indicates SSL/TLS.

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VerboseLogging
property VerboseLogging: Integer

If set to 1, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is 0. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

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Version
property Version: WideString readonly

Version of the component/library, such as "10.1.0"

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Methods

ParseUrl
function ParseUrl(url: WideString): Integer;
Introduced in version 9.5.0.49

Parses a full URL. After parsing, the various parts of the URL are available iin the properties.

Returns 1 for success, 0 for failure.

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