Oracle Forms Mouse triggers

Oracle Forms-Mouse Triggers
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Objectives
• Define Mouse Events
• Mouse Position System Variables
• Describe Various Mouse Triggers
• Describe Mouse Button Actions

Mouse Events
• Point at which processing can be influenced
• Identified by:
– Mouse movement
– Mouse button action

Mouse Cursor Style
• To change the cursor style dynamically
SET_APPLICATION_PROPERTY(CURSOR_STYLE,‘Value’);
DEFAULT
BUSY
CROSSHAIR
HELP
INSERTION
Arrow symbol
Busy symbol
Crosshair symbol
Help symbol
Insertion symbol

Mouse Movement Triggers
• When-Mouse-Enter
• When-Mouse-Leave
• When-Mouse-Move

Mouse Position System Variables
SYSTEM.MOUSE_ITEM The name of the item the mouse is
currently in.
SYSTEM.MOUSE_CANVAS The name of the canvas which the
mouse is currently in.
SYSTEM.MOUSE_X_POS The current mouse X-coordinate
on the canvas
SYSTEM.MOUSE_Y_POS The current mouse Y-coordinate
on the canvas
SYSTEM.MOUSE_RECORD The record number of the record
the mouse is in.

Mouse Position System Variables
SYSTEM.MOUSE_RECORD_OFFSET The offset from the first
visible record that the mouse
is in.
SYSTEM.MOUSE_FORM The name of the form the
mouse is currently in.

Mouse Button Action Triggers
When-Mouse-Down
When-Mouse-Up
When-Mouse-Click
When-Mouse-Doubleclick
Click
Double Click

Mouse Event Trigger Sequence
1. When-Mouse-Down
2. When-Mouse-Up
3. When-Mouse-Click
4. When-Mouse-Down
5. When-Mouse-Up
6. When-Mouse-Doubleclick

Mouse Button Action System Variables
SYSTEM.MOUSE_BUTTON_PRESSED
SYSTEM.MOUSE_BUTTON_MODIFIERS
1
2
3
Shift Ctrl Alt

Summary
• Changing the mouse cursor style
• Respond to mouse movement
– Mouse position system variables
– Mouse movement triggers
• Respond to mouse button actions
– Mouse button system variables
– Mouse button triggers

Oracle Forms Mouse triggers

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