Oracle Forms Mouse Triggers

1. Oracle Forms-Mouse Triggers
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2. Objectives
• Define Mouse Events
• Mouse Position System Variables
• Describe Various Mouse Triggers
• Describe Mouse Button Actions
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3. Mouse Events
• Point at which processing can be influenced
• Identified by:
– Mouse movement
– Mouse button action
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4. 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
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5. Mouse Movement Triggers
• When-Mouse-Enter
• When-Mouse-Leave
• When-Mouse-Move
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6. 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.
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7. 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.
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8. Mouse Button Action Triggers
When-Mouse-Down
When-Mouse-Up
When-Mouse-Click
When-Mouse-Doubleclick
Click
Double Click
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9. 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
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10. Mouse Button Action System Variables
SYSTEM.MOUSE_BUTTON_PRESSED
SYSTEM.MOUSE_BUTTON_MODIFIERS
1
2
3
Shift Ctrl Alt
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11. 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
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