Drag-and-Drop Protocol for the X Window System

INTRODUCTION

 

The basic requirements for a Drag-and-Drop protocol are that it provide visual feedback to the user during the drag and that it allow the target to choose whatever data format it prefers from among all the formats that the source can provide. In addition, it must be efficient so that the visual feedback does not lag behind the user's actions, and it must be safe from deadlock, race conditions, and other hazards inherent in asynchronous systems.

 

Table of Contents

 

• Definitions

• Example walk-through

• Theory

• Notes

• Optimizations

• Technical details

• Sample implementation

• Change log