developer/Samples/NET 4.6/FileBrowser/Shell/Interfaces/IDropSource.cs

   1 using System;
   2 using System.Collections.Generic;
   3 using System.Text;
   4 using System.Runtime.InteropServices;
   5 using System.Windows.Forms;
   6
   7 namespace ShellDll
   8 {
   9     [ComImport]
  10     [GuidAttribute("00000121-0000-0000-C000-000000000046")]
  11     [InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
  12     public interface IDropSource
  13     {
  14         // Determines whether a drag-and-drop operation should continue
  15         [PreserveSig]
  16         Int32 QueryContinueDrag(
  17             bool fEscapePressed,
  18             ShellAPI.MK grfKeyState);
  19
  20         // Gives visual feedback to an end user during a drag-and-drop operation
  21         [PreserveSig]
  22         Int32 GiveFeedback(
  23             DragDropEffects dwEffect);
  24     }
  25 }