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Can this work: FSX/AFLT/ADE

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This is my first post on this forum, so excuse me if I've got anything wrong.

The question is:

Is it possible, from my own code (c#) to send a keypress (m) to FSUIPC which another program, Airport Design Editor will trap as if it came from FSX.  All without losing focus from my program?

Not realizing that ADE uses FSUIPC instead of simconnect, I coded in simconnect.  ADE must somehow receive key presses 'm', 'o' and '.' from FSX, but FSX must have focus when those letters are pressed. 

Airport Design Editor has a feature which allows one to press 'm' whilst in FSX, triggering a marker to be placed at the exact location of the aircraft on ADE.  

The purpose of my program is to:

  • take a list of coordinates from Google Earth, via KML, and send them to FSX in order to position the aircraft position by position. 
  • send key 'm' to FSX so that ADE thinks I have pressed it whilst FSX has focus, when in fact my program still has focus.

If, for instance, I have 40 sets of coordinates, I can single step through them on my program, and markers will appear in ADE, so I can accurately draw to those markers.


I hope that makes sense.






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Is it possible, from my own code (c#) to send a keypress (m) to FSUIPC which another program, Airport Design Editor will trap as if it came from FSX.  All without losing focus from my program?

Not without losing focus, no. The DLL has a method FSUIPCConnection.SendKeyToFS(). There are some overloads that take a reference to a form in your application to return the focus to.

e.g. The following line will:

1. Send a request to FSUIPC to fire an 'm' key press.

2. FSUIPC will make FSX the active window then send the 'm' key press

3. The DLL will then return focus to your form

FSUIPCConnection.SendKeyToFS(Keys.M, this);

The round trip for this is about 300ms, so you might see a flash as the FSX screen comes to the foreground. I suggest trying it and seeing if it's acceptable.

If it must be done by a key press then this is the best that can be done. The way Windows works, only the foreground (focused) window can read the keyboard buffer. It's impossible to send a key press to a specific window that isn't in focus. Windows only has a single, global, keyboard buffer and only the focused window can read it.

The alternative would be if ADE can use another method to receive instructions. e.g. if it responds to custom FSX controls (also known as 'events'), or values written to FSUIPC offsets. These can be used while the FSX window is in the background. But, this would require that the authors of ADE have built in such a feature and are listening for these signals. You would need to ask the authors or see if there is anything in the documentation.


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Thanks so much Paul, the flash would be perfectly acceptable for what I am doing.  I will see if I can make that work.


P.S. It isn't happy with Keys.M It seems to be expecting an FsControl type.  This seems such a quick and easy solution too.


Edited by connomar
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