Feature: Drag-and-Drop Support for Dynamic Label Widgets

Overview

This feature enables Dynamic Label (DL) widgets in Panther to act as drop targets for files. When files are dropped onto a DL widget, their file paths are automatically populated into a designated destination field.

New Properties

Behavior

• When PR_DROP_TARGET is set to PV_YES, the DL widget visually indicates it can accept dropped files.
• If PR_DROP_DESTINATION is empty or unset, the DL itself becomes the destination field.
• Upon dropping files:
  • The destination field's occurrences are cleared.
  • File paths are copied into the field's occurrences, up to the available slots.
  • Each populated occurrence is validated sequentially.
  • If the destination field is different from the DL, the first occurrence of the DL is also validated first.

Visual Considerations

• If the DL is a scrolling array with a single onscreen occurrence and an active pixmap, the dropped file paths may be visually hidden.
• To avoid this, consider using a separate destination widget with PR_HIDDEN set to PV_YES or PV_ALWAYS.

Editor Integration

• The Drop Target property is shown in the Validation section of the Properties Window.
• The optional Drop Destination property is shown below it whenYes is assigned to Drop Target
• The properties are saved when the screen is saved.

F2ASC Syntax

PI(drop-target)=Y <destination>

• <destination> is optional.
• If present, it must be separated from Y by a single space.
• If omitted, a newline follows the Y.
• Any value other than Y after the equals sign is ignored.