User manual DFPUG VISUAL EXTENDED 9.5

[. . . ] The extensive Application Development Framework that makes Microsoft Visual FoxPro Development easy! VISUAL EXTEND 9. 5 English User Manual dFPUG c/o ISYS GmbH Uwe Habermann, Venelina Jordanova Visual Extend 9. 0 User Manual More productive than ever before! Page 2 Copyright Visual Extend is a product from dFPUG c/o ISYS GmbH. Any reuse of VFX related material needs the written permission of dFPUG c/o ISYS GmbH; also VFX related publications must have the copyright notice of dFPUG c/o ISYS GmbH. Note This user manual has identical content as the user manual for Visual Extend 9. 0. All differences between the versions VFX 9. 0 and VFX 9. 5 as well as new features of VFX 9. 5 are described in the document VFX95WhatIsNew. Visual Extend 9. 0 User Manual More productive than ever before! Page 3 1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BASED ON VISUAL FOXPRO 9. 0. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Pick items are defined in Vfxplist. dbf table. Field Picklist is the identifier of the picklist definition and is foreign key to Vfxpdef. dbf table. The fields Code and Descript are values used for creating the list. Depending on picklist definition, only Code column or both Code and Descript columns are displayed in the list. Fields Value and Proccode are designated for developer's purposes. In Proccode field you can write a specific code that will be executed when that particular item is selected. For every instance of cComboPicklist class you can define if adding new records in the pick table is allowed and the user level required for user to be allowed to add new values. Properties: nParentID ­ ID key value from Vfxpdef. dbf table Visual Extend 9. 0 User Manual More productive than ever before! Page 92 Methods: Addnewcode ­ this method is executed when the end-user adds a new value in the pick list table. If it is needed to perform additional processing, the code should be placed in this method. For cComboPicklist class it is possible to define two different code snippets. In Vfxpdef table in ProcCode memo field and in Vfxplist table in ProcCode memo field. The code in Vfxpdef. ProcCode table is common for the cComboPicklist and is executed every time when the selected item of the Combobox is changed. ProcCode table is specific for the particular list item and is executed only when this item is selected from the list. For every entry in Vfxplist. dbf table you can define if this is an active entry or not. Using this approach you do not need to delete entries which will not be used in the future and thus to cause orphan records in your database. When the field will not be used anymore, just set the values in its Active field to . F. 8. 18. VFX - Parent/Child Builder Although there is a special VFX ­ Builder for the creating 1:n-forms, sometimes it is better to manipulate Child-data in its own form. That is in particular the case, when you want to use the child form not only through the main form, but also for direct manipulation. In addition, if you, have many fields on the Child-form, it can be difficult to edit them in a 1:n-form. A special power of VFX is the use of the Linked Child technology. Thereby two forms are logically connected one to other. Any VFX Form class can serve as Parent form. Also the Child form can be based on any VFX Form class. When moving the record pointer in the Parent form, the content in the Child form will be automatically updated and the data records that correspond to the current Parent are displayed. [. . . ] In a Tutorial are described the solutions with VFX based on typical developers' questions. Directly from the technical reference can be started videos (Avi files). In the videos is described and shown the development of forms for Fileserver- and Client-/Server-databases. A great assistance in the training for the VFX beginner. 18. 1. Support Support for VFX can be found in the dFPUG forum (http://forum. dfpug. de). [. . . ]