GEOS SDK TechDocs
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5.12 Multiple Document Interface
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5.14 General Change Notification
A common feature of GUIs is the Clipboard. Users can copy or cut data out of documents for pasting into other documents (or even the same document) later. When data is cut or copied, it is placed in a transfer item, a special data structure used by the Clipboard. All applications can access the Clipboard via Cut, Copy, and Paste; in addition, the Edit menu can be implemented automatically with the use of a GenEditControl object.
GEOS also offers another method of transferring data--the quick-transfer mechanism. In OSF/Motif, the user clicks the move/copy button (in most cases the right mouse button) over some selected data. He can then drag to another area and drop the selected data, either moving or copying it depending on certain contextual factors. Applications may or may not support the quick-transfer mechanism, though supporting it is not difficult and is strongly encouraged.
Both the Clipboard and the quick-transfer mechanism are supported automatically by all text edit and display objects. Applications may define their own custom data formats (transfer items) for use with both the Clipboard and the quick-transfer mechanism.
GEOS SDK TechDocs
|
| 5.12 Multiple Document Interface
| 5.14 General Change Notification