Build a Simple VCL Application for Google Search Results

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

Create a Connection to Google Search Results

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.

Google カスタム検索エンジンを使って検索するには、CustomSearchId およびAPIKey 接続プロパティが必要です。

CustomSearchId を取得するには、Google カスタム検索エンジンにサインインして検索エンジンを新規作成します。

APIKey を取得するには、Google API Console でカスタム検索API を有効にします。

You can then follow the steps below to use the Data Explorer to create a FireDAC connection to Google Search results.

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 Google Search.

Create VCL Applications with Connectivity to Google Search Results

Follow the procedure below to start executing queries to Google Search results 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 Google Search results.
   • 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 Title, ViewCount FROM VideoSearch WHERE SearchTerms = 'WayneTech'
   • 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 Google Search Results in C++Builder
• DataBind Controls to Google Search Results in Delphi
• Viewing Google Search Results in RAD Studio Data Explorer