Somthing confused with ole drag and drop implementation [closed]
问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 4 years ago . I wish to finish a little demo to implement OLE drag and drop(drag a file from my application to windows explorer). But here comes a problem:DoDragDrop return DRAGDROP_S_DROP which means the ole drag and drop operation has successfully done,but also get DROPEFFECT_NONE which means drop target cannot accept the