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Build a Simple VCL Application for Google Drive Data

How to build a simple VCL Application to view Google Drive data in RAD Studio using the CData FireDAC Components for Google Drive.

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

Creating a VCL Application for Google Drive Data

The following instructions show how to use the Form Designer to create a simple VCL Forms application that shows the basic FireDAC objects needed to connect to Google Drive from any application.

The following example populates a TDBGrid control.

  1. Create a new VCL Forms Application.
  2. Drop a TFDPhysGoogleDriveDriverLink and TFDConnection object onto the form.
  3. Double-click the TFDConnection object. The FireDAC Connection Editor is displayed. Select "CData.GoogleDrive" in the DriverId menu and configure the connection properties.

    Google Drive はOAuth 認証標準を利用しています。各ユーザーやドメイン内のユーザーの代わりに、本製品がGoogle API にアクセスすることを許可できます。 接続すると、本製品はデフォルトブラウザでOAuth エンドポイントを開きます。ログインして、アプリケーションにアクセス許可を与えます。本製品がOAuth プロセスを完了します。

    詳細はドライバーのヘルプドキュメントを参照してください。

  4. Drop a TFDQuery object onto the form and set the properties below:

    • Connection - Set this property to the TFDConnection object, if this object is not already specified.
    • SQL - Click the button in the SQL property and enter a query.
    • Active - Set this property to true.
  5. Drop a TDataSource object onto the form and set the following property:

    • DataSet - In the menu for this property, select the name of the TFDQuery object.
  6. Drop a TDBGrid control onto the form and set the following property:

    • DataSource - Select the name of the TDataSource.
  7. 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.

 
 
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