Is there a way to pause a ActiveX Control (MapPoint) or run DoDragDrop async?

I've found the problem. I've fired DoDragDrop on the BeforeClick-Event. MapPoint probably wait for the Events callback, but don't get one because DoDragDrop keeps the Event up until the mouse is released.

Now I have written a Event which starts the DoDragDrop Event async to the MapPoint BeforeClick-Event. Code: public event InitDragDropHandler InitDragDrop; public delegate void InitDragDropHandler(object sender, object data); public main() { this. InitDragDrop += new InitDragDropHandler(main_InitDragDrop); } void mappoint_BeforeClick(object sender, AxMapPoint.

_IMappointCtrlEvents_BeforeClickEvent e) { if (InitDragDrop! = null) { this. BeginInvoke(new ThreadStart(() => { InitDragDrop(mappoint, pps); })); } } void main_InitDragDrop(object sender, object data) { ((Control)sender).

DoDragDrop(data, DragDropEffects. Copy); }.

I'm a little surprised that works. I've used MapPoint application with other things on their own threads, but you have to be careful; and Windows does not like multiple threads using the same controls. – winwaed Jan 18 at 14:22 After starting a DoDragDrop from the thread, which mappoint also uses,...I think he mean in the same thread – edze Jan 18 at 14:38 @winwaed: Like edze said, the mappoint control runs in the mainthread, but thanks to begininvoke the InitDragDrop event is fired after the mappoints BeforeClick event is finished.

– Wowa Jan 18 at 14:44 ah okay- thanks. – winwaed Jan 18 at 16:09.

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