Key triggers in Oracle Forms are used to define and enhance keyboard functionality. Key triggers can be defined at different levels and can contain built-in functions to execute actions like committing records or exiting forms. Common types of key triggers include function key triggers, Key-Fn triggers, Key-Others triggers, and mouse-event key triggers. Key triggers provide consistent functionality across function keys, buttons, menus, and mouse events.

1. Oracle Forms-Key Triggers
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2. Objectives
• Defining Key Trigger and their Uses
• Characteristics of Key Triggers
• Types of Key Triggers
• Associate Function Keys with Interface Controls
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3. Key Trigger
• What is a key trigger?
• Example:
Using a Key-Exit trigger display an Alert, If user selects Yes. Exit the
form.
SET_ALERT_PROPERTY(‘exit_alert’,
ALERT_MESSAGE_TEXT,
‘Do you really want to leave the form?’);
IF SHOW_ALERT(‘exit_alert’) = ALERT_BUTTON1 THEN
EXIT_FORM;
END IF;
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4. Characteristics of Key Triggers
• You cannot redefine all function keys with
key triggers.
• Key triggers are defined at all three levels.
• A key trigger can contain SELECT statements and all built-ins.
• Key triggers can fire in Enter Query mode.
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5. Built-ins in Key Triggers
Function Key
[Accept]
[Clear Form]
[Create Record]
[Delete Record]
[Exit Form]
Key Trigger
Key-Commit
Key-Clrfrm
Key-Crerec
Key-Delrec
Key-Exit
Built-in
COMMIT_FORM
CLEAR_FORM
CREATE_RECORD
DELETE_RECORD
EXIT_FORM;
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6. Types of Key Triggers
• Function key triggers
• Key-Fn triggers and Oracle Terminal
• Key-Others triggers
• Oracle Terminal Used for mapping keys.
• Key mappings are done in following Resource files:
– Client/Server FMRUSW.RES
– Web mode FMRWEB.RES
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7. Mouse-event key triggers
• Key-Next-Item
• Key-Prev-Item
• Key-Nxtrec
• Key-Prvrec
• Key-Up
• Key-Down
• Key-Scrup
• Key-Scrdown
• Key-Nxtblk
• Key-Prvblk
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8. Using Key Triggers
• Adjust user interface
• Disable a (set of) function keys
• Replace or extend functionality of function keys
• Add additional function keys
• Be careful with Key-Others
• Do not use for validation
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9. Specific Uses of Key Triggers
• Call an LOV form
• Check for detail records before deleting a
master record
• Prevent duplication of the primary key
• Adjust toolbar buttons for Enter Query mode
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10. Associating with other Interface Controls
• DO_KEY(’Key-Exit’) gives run-time
error
• Corresponding interface control
descriptions
In When-Button-Pressed and Menu item code:
DO_KEY(‘EXIT_FORM’);
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11. Summary
• Define key triggers in order to
– enhance keyboard functionality
– replace keyboard key
• Provide consistent functionality between
Function keys, buttons, menu items, and
mouse events
• Define Key-Fn, Key-Others, and mouse-event key triggers
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