How to implement Drag&Drop?

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   I can speak english a little , please don't mind
I want to implement Drag&Drop using COleDataSource and COleDropTarget。
So, I declare a COleDataSource in CXTPTaskPanelEx:CXTPTaskPanel extend class
And, I use COleDataSource.DoDragDrop in CXTPTaskPanelEx::OnLButtonDown
But, unexpected situation happened...
When i drag or click item in CXTPTaskPanel&Group, the respond all confusion, delay and wrong...
It's OnTaskPanelNotify results also delay and wrong.
What's the reason that? 

How can i implement Drag&Drop in CXTPTaskPanel? Don't use COleDataSource&COleDropTarget method?

Thanks all!

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register_jhb Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 June 2011 Status: Offline Points: 5	Post Options Post Reply Quote register_jhb Report Post Thanks(0) Quote Reply Topic: How to implement Drag&Drop? Posted: 18 January 2012 at 10:41pm
	I can speak english a little , please don't mind I want to implement Drag&Drop using COleDataSource and COleDropTarget。 So, I declare a COleDataSource in CXTPTaskPanelEx:CXTPTaskPanel extend class And, I use COleDataSource.DoDragDrop in CXTPTaskPanelEx::OnLButtonDown But, unexpected situation happened... When i drag or click item in CXTPTaskPanel&Group, the respond all confusion, delay and wrong... It's OnTaskPanelNotify results also delay and wrong. What's the reason that? How can i implement Drag&Drop in CXTPTaskPanel? Don't use COleDataSource&COleDropTarget method? Thanks all!