Build a Simple VCL Application for Reckon Accounts Hosted データ

Embarcadero RAD Studio provides a development environment for Delphi and C++Builder applications. With the CData ODBC Driver for Reckon Accounts Hosted, you gain access to live Reckon Accounts Hosted データ within RAD Studio, abstracting the data into tables, views, and stored procedures that can be used to retrieve and update Reckon Accounts Hosted データ. This article will walk through connecting to Reckon Accounts Hosted and creating a simple VCL application with the Form Designer.

Create a Connection to Reckon Accounts Hosted データ

If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.

CData 製品 はOAuth 経由でReckon Accounts Hosted にリクエストを作成します。次の接続プロパティを指定します。

• User： 必須。企業ファイルのユーザー名。
• Password： 必須。企業ファイルのパスワード。
• CompanyFile: 必須。企業ファイルへのパス。
• InitiateOAuth：アクセストークンの処理をドライバーに任せる場合はGETANDREFRESH に設定。
• CountryVersion：デフォルトは、2021.R2.AU です。

カスタムOAuth アプリケーションを作成し、以下の追加の接続プロパティを指定することもできます。

• SubscriptionKey：Azure Platform 上のReckon Portal から取得したAPI キー。
• OAuthClientId：アプリケーション設定のクライアントID に設定。
• OAuthClientSecret：アプリケーション設定のクライアントシークレットに設定。
• CallbackURL：カスタムOAuth アプリのリダイレクトURI。

CData は、OAuth デスクトップ認証を簡略化する埋め込みOAuth アプリケーションを提供します。ほかのOAuth 認証方法（Web、ヘッドレスなど）、カスタムOAuth アプリケーションの作成、その理由などについては、ヘルプドキュメントを参照してください。

You can then follow the steps below to use the Data Explorer to create a FireDAC connection to Reckon Accounts Hosted データ.

1. In a new VCL Forms application, expand the FireDAC node in the Data Explorer.
2. Right-click the ODBC Data Source node in the Data Explorer.
3. Click Add New Connection.
4. Enter a name for the connection.
5. In the FireDAC Connection Editor that appears, set the DataSource property to the name of the ODBC DSN for Reckon Accounts Hosted.

Create VCL Applications with Connectivity to Reckon Accounts Hosted データ

Follow the procedure below to start executing queries to Reckon Accounts Hosted データ from a simple VCL application that displays the results of a query in a grid.

1. Drop a TFDConnection component onto the form and set the following properties:

   • ConnectionDefName: Select the FireDAC connection to Reckon Accounts Hosted データ.
   • Connected: Select True from the menu and, in the dialog that appears, enter your credentials.

2. Drop a TFDQuery component onto the form and set the properties below:

   • Connection: Set this property to the TFDConnection component, if this component is not already specified.

   • SQL: Click the button in the SQL property and enter a query. For example:

     SELECT Name, Balance FROM Accounts WHERE IsActive = 'true'
   • Active: Set this property to true.

3. Drop a TDataSource component onto the form and set the following property:

   • DataSet: In the menu for this property, select the name of the TFDQuery component.

4. Drop a TDBGrid control onto the form and set the following property:

   • DataSource: Select the name of the TDataSource.
5. Drop a TFDGUIxWaitCursor onto the form — this is required to avoid a run-time error.

You now have an executable application that displays the results of the SQL Query set in the TFDQuery object.

Related Articles

Below you can find other articles for using the CData ODBC Driver with RAD Studio, Delphi, and C++ Builder.

• DataBind Controls to Reckon Accounts Hosted データ in C++Builder
• DataBind Controls to Reckon Accounts Hosted データ in Delphi
• Viewing Reckon Accounts Hosted データ in RAD Studio Data Explorer