Last edit: 05-03-17 Graham Wideman

Delphi

Contents

• OLE Drag and Drop Delphi Overview 
  • Orientation
  • Comparison of different varieties of drag and drop operation.
  • Pieces to Master
  • Resources and References

• OLE Drag-and-Drop "Theory"
  • UML-style Sequence Diagram of OLE drag and drop, and discussion.
  • General requirements for OLE-drag-sourcing and OLE-drop-accepting application
     
• OLE Drag-and-Drop Demo/Diagnostic Applications
   
  • Drop Demo/Diagnostic/Browser application: demonstrates code for accepting OLE drops, monitors the status of associated COM objects and function calls, and also reveals the kinds and structure of data that applications drop.
    • GWDropDemo User Guide: Take a look at the screen shots to see if you can use this.
    • Code Documentation .
       
  • Drag Demo/Diagnostic application: demonstrates code for sourcing OLE drags, and monitors the status of associated COM objects and function calls.
    • GWDragDemo User Guide  Take a look at the screen shots to see if you can use this.
    • Code Documentation
       
  • Release Notes  Combined release notes for GWDragDemo, GWDropDemo and associated documentation.
     
• Understanding COM (OLE) Interface References, AddRef and All That: If you are interested in OLE Drag and Drop then you'll probably also be interested in this.  
   
• Miscellaneous
  • Some comments on related discussions in recent books.
  • Notes on Delphi Message Handling sequence

Download

If you are reading this page from my web site, then download all source code, executables and these pages here:
GWDrgDrp.zip  (Version 1.13   98-12-20)
(If reading from CD or hard-drive, you already got this zip and expanded it, so the link is disabled.)  Note that this file includes the contents of GWRefCt.zip also.

Copyright Status

Please feel free to distribute or publish this article and associated code, provided some note of credit for me remains attached. Permission is also granted to include this article on CDROM collections, again provided credit remains attached. Thanks!

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