Event Sequences
This article requires updating for 4.1 as many more delegates are handled in Web/Mobile
Contents
See Also
Opening and Closing
Opening an App
Desktop
When a Desktop App is opened, the following event delegates are called:
- init
- visiblewhen, enabledwhen (runtime only)
- load
- datachanged, parentdatachanged, refresh, afterrefresh
- ready
- resized (Canvas and Custom Sections)
- activate
Setup.prg
If setup.prg exists in the App's directory, setup.prg is run.
INIT
- App
- Page1
- Section1 (If Section1 has a 'database' value, the database is opened, running dbc_opendata.prg if it exists in the database's directory. If a database is open and Section1 has a 'table' value, the table is opened, running the table onopen trigger if one exists.)
- Field1
- Field2
- FieldN
- Section2 (Database and/or Section2's table as for Section1 above)
- Field1 ... FieldN
- SectionN (Database and/or SectionN's table as for Section1 above)
- Field1 ... FieldN
- Section1 (If Section1 has a 'database' value, the database is opened, running dbc_opendata.prg if it exists in the database's directory. If a database is open and Section1 has a 'table' value, the table is opened, running the table onopen trigger if one exists.)
- Page2
- Section1 (Database and/or Section1's table as for Page 1, Section1 above)
- Field1 ... FieldN
- Section2 (Database and/or Section2's table as for Page 1, Section1 above)
- Field1 ... FieldN
- SectionN (Database and/or SectionN's table as for Page 1, Section1 above)
- Field1 ... FieldN
- Section1 (Database and/or Section1's table as for Page 1, Section1 above)
- PageN
- Section1 (Database and/or Section1's table as for Page 1, Section1 above)
- Field1 ... FieldN
- Section2 (Database and/or Section2's table as for Page 1, Section1 above)
- Field1 ... FieldN
- SectionN (Database and/or SectionN's table as for Page 1, Section1 above)
- Field1 ... FieldN
- Section1 (Database and/or Section1's table as for Page 1, Section1 above)
- Page1
VISIBLE WHEN
The VISIBLE WHEN event is called for Pages and their Sections (runtime only). Called after the object's init; other objects' init may not yet have been called.
ENABLED WHEN
The ENABLED WHEN event is called for Pages and their Sections (runtime only). Called after the object's init and visiblewhen; other objects' init and visiblewhen may not yet have been called.
LOAD
- App
- Page1
- Section1
- Field1 ... FieldN
- ...
- SectionN
- Field1 ... FieldN
- Section1
- ...
- PageN
- Section1
- Field1 ... FieldN
- ...
- SectionN
- Field1 ... FieldN
- Section1
- Page1
DATACHANGED
The DATACHANGED event is called for data-bound Canvas Sections and Form Sections and their Fields.
PARENTDATACHANGED
The PARENTDATACHANGED event is called for related child Sections.
REFRESH
The REFRESH event is called for Sections.
AFTERREFRESH
The AFTERREFRESH event is called for Sections.
READY
- App
- Page1
- Section1
- Field1 ... FieldN
- ...
- SectionN
- Field1 ... FieldN
- Section1
- ...
- PageN
- Section1
- Field1 ... FieldN
- ...
- SectionN
- Field1 ... FieldN
- Section1
- Page1
RESIZED
The RESIZED event is called for all Canvas and Custom Sections.
ACTIVATE
- Page1 (or Page specified in the App 'Initial Page' attribute or first Page user has permission to read)
- Section1
- Field1 ... FieldN
- ...
- SectionN
- Field1 ... FieldN
- Section1
Web/Mobile App
When a Web/Mobile App is opened, the following event delegates are called:
- init
- load
- datachanged, parentdatachanged, refresh, afterrefresh
- ready
- resized (Canvas and Custom Sections)
- activate
INIT
- App
- Page1
- FormSection1 Field1 ... FieldN
- ...
- Page2
- FormSection1 Field1 ... FieldN
- ...
- ...
- ...
- PageN
- FormSection1 Field1 ... FieldN
- ...
- Page1
LOAD
- App
- Page1
- FormSection1 Field1 ... FieldN
- ...
- Page2
- FormSection1 Field1 ... FieldN
- ...
- ...
- ...
- PageN
- FormSection1 Field1 ... FieldN
- ...
- Page1
READY
- App
- Page1
- FormSection1 Field1 ... FieldN
- ...
- Page2
- FormSection1 Field1 ... FieldN
- ...
- ...
- ...
- PageN
- FormSection1 Field1 ... FieldN
- ...
- Page1
DATACHANGED
The DATACHANGED event is called for data-bound Canvas Sections,Grid Sections and Form Sections.
PARENTDATACHANGED
The PARENTDATACHANGED event is called for related child Sections.
REFRESH
The REFRESH event is called for Sections.
AFTERREFRESH
The AFTERREFRESH event is called for Sections.
RESIZED
The RESIZED event is called for all Canvas and Custom Sections.
ACTIVATE
- Page1 (or Page specified in the App 'Initial Page' attribute or first Page user has permission to read)
Closing an App
Desktop
When a Desktop App is closed, the following event delegates are called:
UNLOAD and DESTROY
- Page1 UNLOAD
- Section1 UNLOAD
- ...
- SectionN UNLOAD
- Page1 DESTROY
- Section1 DESTROY
- ...
- SectionN DESTROY
- Page2 UNLOAD
- Section1 UNLOAD
- ...
- SectionN UNLOAD
- Page2 DESTROY
- Section1 DESTROY
- ...
- SectionN DESTROY
- ...
- PageN UNLOAD
- Section1 UNLOAD
- ...
- SectionN UNLOAD
- PageN DESTROY
- Section1 DESTROY
- ...
- SectionN DESTROY
- App UNLOAD
- App DESTROY
The database is closed, running dbc_closedata.prg if it exists in the database's directory. Tables are closed, running the tables' onclose trigger if applicable.
Web/Mobile App
- None
When changing from one page (Page1) to another (Page2), the following event delegates are called:
Desktop
DEACTIVATE
- Page1
- Section1
- Field1 ... FieldN
- ...
- SectionN
- Field1 ... FieldN
- Section1
RESIZED
- Page2
- Canvas or Custom Sections
DATACHANGED
- Page 2
- Data-bound Canvas Sections and Form Sections and their fields
PARENTDATACHANGED
- Page2
- Related child sections
REFRESH
- Page 2
- Section1
- ...
- SectionN
AFTERREFRESH
- Page 2
- Section1
- ...
- SectionN
ACTIVATE
- Page2
- Section1
- Field1 ... FieldN
- ...
- SectionN
- Field1 ... FieldN
- Section1
VISIBLE WHEN and ENABLED WHEN
- Page2 VISIBLE WHEN (runtime only)
- Page2 ENABLED WHEN (runtime only)
- Section1 VISIBLE WHEN (runtime only)
- Section1 ENABLED WHEN (runtime only)
- ...
- SectionN VISIBLE WHEN (runtime desktop only)
- SectionN ENABLED WHEN (runtime desktop only)
Web/Mobile App
DEACTIVATE
- Page1
ACTIVATE
- Page2
DATACHANGED
- Page 2
- Data-bound Canvas Sections, Form Sections and Grid Sections
PARENTDATACHANGED
- Page2
- Related child sections
RESIZED
- Page2
- Canvas or Custom Sections
REFRESH
- Page 2
- Section1
- ...
- SectionN
AFTERREFRESH
- Page 2
- Section1
- ...
- SectionN
Desktop
Using Page actionbar or Section header actionbar
- FormSection DATACHANGED
- FormSection REFRESH
- Field1 ... FieldN DATACHANGED
- RelatedSection PARENTDATACHANGED
- RelatedSection DATACHANGED (data-bound Canvas Section or Form Section)
- RelatedSection REFRESH (data-bound Canvas Section or Form Section)
- RelatedSection AFTERREFRESH (data-bound Canvas Section or Form Section)
- Field1 ... FieldN DATACHANGED (Form Section)
- Page REFRESH
- Page AFTERREFRESH
Web/Mobile App
Using Page actionbar
- FormSection DATACHANGED
- FormSection REFRESH
- FormSection AFTERREFRESH
- RelatedSection PARENTDATACHANGED
- RelatedSection DATACHANGED
- RelatedSection REFRESH
- RelatedSection AFTERREFRESH
Desktop
From row to row (cursor or mouse) or using Page navigation buttons in the Grid Section actionbar
- GridSection CLICK
- RelatedSection PARENTDATACHANGED
- RelatedSection DATACHANGED (Form/Canvas Section)
- RelatedSection REFRESH (Form/Canvas Section)
- Field1 ... FieldN DATACHANGED (Form Section)
- RelatedSection AFTERREFRESH (Form/Canvas Section)
Web/Mobile App
From row to row (mouse) or using Page navigation buttons in the Grid Section actionbar
- GridSection CLICK
- RelatedSection PARENTDATACHANGED
- RelatedSection DATACHANGED (Grid/Form/Canvas Section)
- RelatedSection REFRESH (Grid/Form/Canvas Section)
- RelatedSection AFTERREFRESH (Grid/Form/Canvas Section)
Data Operations
Adding a new record
Desktop
When the 'Add New Record' button in the Page actionbar or the 'Add' button in the Section actionbar is clicked, the following events are called:
BEFORECREATE
- Section
ONBEFOREINSERT
If it exists, the bound table's ONBEFOREINSERT trigger is called.
ONAFTERINSERT
If it exists, the bound table's ONAFTERINSERT trigger is called.
AFTERCREATE
- Section
REFRESH, DATACHANGED and PARENTDATACHANGED
- Section REFRESH
- Field1 ... FieldN DATACHANGED
- RelatedSection PARENTDATACHANGED
- RelatedSection DATACHANGED (if Form Section)
- RelatedSection REFRESH (if Form Section)
- Field1 ... FieldN DATACHANGED (if Form Section)
Updating and saving the newly added record calls the events as in Updating a record below.
If the 'Undo Change' button in the Page actionbar or the 'Revert' button in the Section actionbar is clicked, the events called are as in Deleting a record below.
Web/Mobile App
Updating and saving the newly added record calls the events as in Updating a record below.
Updating a record
Desktop
Form Section
INTERACTIVECHANGE
The INTERACTIVECHANGE event is called on each entered keypress for editable fields.
HOTKEY
The HOTKEY event is called on non-entered keypresses for editable fields, e.g. Tab, Backspace.
VALIDATION
If specified, the VALIDATION Attribute expression is checked on exiting a modified field.
VALIDWHEN
Called after the save of a full Section edit, not an inline field edit.
- Page
- Section
BEFOREUPDATE
This and subsequent events are called after the save of a full Section or inline field edit.
- Section
ONBEFOREUPDATE
If it exists, the bound table's ONBEFOREUPDATE trigger is called.
ONAFTERUPDATE
If it exists, the bound table's ONAFTERUPDATE trigger is called.
AFTERUPDATE
- Section
REFRESH, AFTERREFRESH, DATACHANGED and PARENTDATACHANGED
- Section REFRESH and AFTERREFRESH
- Section DATACHANGED
- Field1 ... FieldN DATACHANGED
- RelatedSection PARENTDATACHANGED
- RelatedSection DATACHANGED (Canvas/Form Section)
- RelatedSection REFRESH and AFTERREFRESH (Canvas/Form Section)
- Field1 ... FieldN DATACHANGED (Form Section)
Canvas Section
MOUSEENTER
The MOUSEENTER event is called on editable fields.
GOTFOCUS
The GOTFOCUS event is called on editable fields.
CLICK
The CLICK event is called on editable fields.
INTERACTIVECHANGE
The INTERACTIVECHANGE event is called on each entered keypress for editable fields.
HOTKEY
The HOTKEY event is called on non-entered keypresses for editable fields, e.g. Tab, Backspace.
MOUSELEAVE
The MOUSELEAVE event is called on editable fields.
VALIDATION
If specified, the VALIDATION Attribute expression is checked for each modified field on exiting the field.
LOSTFOCUS
The LOSTFOCUS event is called on editable fields.
VALIDWHEN
- Page
- Section
BEFOREUPDATE
- Section
ONBEFOREUPDATE
If it exists, the bound table's ONBEFOREUPDATE trigger is called.
ONAFTERUPDATE
If it exists, the bound table's ONAFTERUPDATE trigger is called.
AFTERUPDATE
- Section
REFRESH, AFTERREFRESH, DATACHANGED and PARENTDATACHANGED
- Section REFRESH and AFTERREFRESH
- Field1 ... FieldN DATACHANGED
- RelatedSection PARENTDATACHANGED
- RelatedSection DATACHANGED (Canvas/Form Section)
- RelatedSection REFRESH and AFTERREFRESH (Canvas/Form Section)
- Field1 ... FieldN DATACHANGED (Form Section)
Grid Section
VALIDATION
If specified, the VALIDATION Attribute expression is checked on exiting a modified cell.
The following events are called after clicking the Grid Section actionbar 'Save' button or moving to another grid row after modifying a Grid Section column.
VALIDWHEN
- Section
BEFOREUPDATE
- Section
ONBEFOREUPDATE
If it exists, the bound table's ONBEFOREUPDATE trigger is called.
ONAFTERUPDATE
If it exists, the bound table's ONAFTERUPDATE trigger is called.
AFTERUPDATE
- Section
Changed
- Section
- Page
Web/Mobile App
Form Section
GOTFOCUS
The GOTFOCUS event is called on editable fields.
INTERACTIVECHANGE
The INTERACTIVECHANGE event is called on each entered keypress for editable fields.
CHANGED
The CHANGED event is called on modified fields.
LOSTFOCUS
The LOSTFOCUS event is called on editable fields.
After the save of a full Section or inline field edit:
BEFOREUPDATE
- Section
AFTERUPDATE
- Section
REFRESH, AFTERREFRESH, DATACHANGED and PARENTDATACHANGED
- Section REFRESH and AFTERREFRESH
- Section DATACHANGED
- Field1 ... FieldN DATACHANGED
- RelatedSection PARENTDATACHANGED
- RelatedSection DATACHANGED
- RelatedSection REFRESH and AFTERREFRESH
Canvas Section
MOUSEENTER
The MOUSEENTER event is called on editable fields.
GOTFOCUS
The GOTFOCUS event is called on editable fields.
CLICK
The CLICK event is called on editable fields.
INTERACTIVECHANGE
The INTERACTIVECHANGE event is called on each entered keypress for editable fields.
CHANGED
The CHANGED event is called on modified fields.
LOSTFOCUS
The LOSTFOCUS event is called on editable fields.
MOUSELEAVE
The MOUSELEAVE event is called on editable fields.
Grid Section
The following events are called after editing and saving a Grid Section row in the 'Edit Record' dialog.
- None
Deleting a record
Desktop
When the 'Delete Record' button in the Page actionbar or the 'Delete' button in the Section actionbar is clicked, the following events are called:
BEFOREDELETE
- Section
ONBEFOREDELETE
If it exists, the bound table's ONBEFOREDELETE trigger is called.
ONAFTERDELETE
If it exists, the bound table's ONAFTERDELETE trigger is called.
AFTERDELETE
- Section
REFRESH, DATACHANGED and PARENTDATACHANGED
- Section DATACHANGED
- Section REFRESH
- Field1 ... FieldN DATACHANGED
- RelatedSection PARENTDATACHANGED
- RelatedSection DATACHANGED (if Form Section)
- RelatedSection REFRESH (if Form Section)
- Field1 ... FieldN DATACHANGED (if Form Section)
Web/Mobile App
- Same as Desktop