4D v13.4Plug-in areas |
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4D v13.4
Plug-in areas
Plug-in areas
A plug-in area is an area on the form that is completely controlled by a 4D plug-in. When opening a database, 4D creates an internal list of the plug-ins installed in your database. Once you have inserted a Plug-in Area in a form, 4D lists the available plug-ins in the Property List window. By default, OLE tools (Windows only) and Report are available. Note: Some plug-ins cannot be used in forms or external windows. When a plug-in cannot be used in a form, it does not appear in the plug-in list of the Property List. To specify the plug-in to be used in the area, select its name directly in the Type list (“Objects” theme): Note: When the object type chosen is Plugin Area, an Advanced button may be enabled if advanced options are provided by the author of the plug-in. In this case, you can click this button to set these options. Because the Advanced options dialog box is under the control of the author of the plug-in, information about these Advanced options is the responsibility of the distributor of the plug-in. If you draw a plug-in area that is too small, 4D will display it as a button whose title is the name of the variable associated with the area. During execution, the user can click on this button in order to open a specific window displaying the plug-in. To add a plug-in in your 4D environment, you first need to quit 4D. Plug-ins are loaded when you launch 4D. For more information about the installation of plug-ins, refer to Installing plugins or components. The ability to incorporate plug-ins into forms gives you unlimited possibilities when creating custom applications. A plug-in can perform a simple task such as displaying a digital clock on a form, or a complex task such as providing full-featured word processing, spreadsheet, or graphics capabilities. Many of these capabilities are already available for the 4D environment in the form of 4D plug-ins. For example:
For more information, refer to the documentation that comes with these plug-ins. Programming manuals for these plug-ins are available on 4D Doc Center: 4D Internet Commands, 4D Write Language and 4D View Language. Note: The 4D Chart plug-in, used to generate and display graphs, is also available. However, this plug-in is deprecated since 4D v13 (see 4D Chart). If you are interested in designing your own plug-ins, you can receive extensive information about writing and implementing plug-ins. 4D provides a complete kit to help you write custom plug-ins. For more information, contact 4D, Inc. (http://www.4d.com) By default, 4D offers the following types of plug-ins:
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PROPERTIES
Product: 4D |