A top level window does not have a message loop
This only happens in 32-bit Windows, and only DDE clients are affected. To make a connection,
an application broadcasts a message to all top level windows. If the window is not on the same thread,
the message is actually posted to the recipients queue and the caller is blocked. If the
recipient has no message queue the calling thread is permanently blocked. Microsoft has acknowledged
that this is a bug. Further details are in the Knowledgebase article
Q136218
BUG: DdeConnect Never Returns.
In http://www.angelfire.com/biz/rhaminisys/ddeinfo.html
apparently no solution seems to have

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Hello All.
I use a to save .csv files in Experts/Files in C folder. For this, I need to use a top level, Administrative lever to save in C folder.
But I want to use the DDE to passa values for an applivative that I use to analyse the traders.
But, DDe only function in non top level, non administrative level, if I open the metatrader as administrator, the DDE not function.
How can I to do for solve this problem?