Advanced Demo

The database scroller (right) shows the result of a database query. You can freely select the layout (other sample) and build a query (with or without SQL). The edit link passes the record to the database form (below) which is used to display, find, enter, update, and remove database records. The layout of the database form can also be edited freely. The database form component contains field components to display and accept data, including data conversions and checks. You might want to play with these components and watch their properties by clicking on the handles.

Many applications can be realized by combining various components. You can freely use various components on a single page and nest them as you like. Some components like dbscroller can be controlled by messages e.g. this Link asks the scroller on top of this page to display hardware products only.

Components can be freely combined with programs. This Link executes a program to set the page size of the scroller; click on the handle and on extend to see the program. The "Set Scroller Page Size" button below the database form works the same and the program can access all the form data. Note that all basic field checks, error messages, and data conversions are handled automatically by the field components.

Most components allow the user to add / override methods. For example the dbform has a overridden check method to check for data consistency. Click on the form handle and on extend to see the method.

Of course it is also possible to embed programs directly into a page, like 10*10=100 , 11*11= 121 , 12*12= 144 , 13*13= 169 , 14*14= 196 (press Content to see the program) and it is perfectly possible to use components inside programs e.g. 2 3 4 5 6 7 8 9 to set the scroller size.

Finally it is possible to develop your own component libraries with RADpage. You can start from scratch taking the standard libraries as examples or you can use object oriented inheritance to modify existing components.