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How to send relative mouse movement to another pc

Answer 1

+1 A:

I'm not sure the specifics of what you're trying to do, but why not try clipping the cursor to a small part of the screen and making it invisible. Then every time you detect movement, move the client's cursor back to the center of that clipped box. So you're calculating relative movement from the same on-screen point every time.

This is what Bochs, the PC emulator does (almost--it doesn't clip the cursor to the window).

zildjohn01 2009-04-08 21:46:09

Answer 2

+2 A:

I can't actually answer your question, but are you aware of the open-source program Synergy?

It does what you're trying to do - perhaps you could take a peek at the source for hints.

Blorgbeard 2009-04-08 22:20:33

I already looked on their code, but I'm not really familiar with it can't see much. I found out, that they track the mouse movement and use a timer to ignore wrong movement. But it looks complicated. I hope there is an easier method

Tarion 2009-04-08 22:35:13

Answer 3

A:

Got my solution, based on the box method. MouseSimulator.Position just do:

        Cursor.Position = new Point(value, Y);

HookManager_MouseMoveExt is my callback. MouseEventExtArgs are just extended MouseEventArgs, added features like the deltas.

        private bool ignoreNext = false;
        void HookManager_MouseMoveExt(object sender, MouseEventExtArgs e)
        {
            // Should we block all mouse interactions?
            if (Block) {
                e.Handled = true;
                return;
            }

            // Return if we should ignore the nex, because we made a big jump
            if (ignoreNext) {
                ignoreNext = false;
                return;
            }

            if (hasControl) 
            {
                // Lock the mouse to 100,100 : 200,200 and flip back to 150,150 if out of bounds
                if (e.X < 100 || e.X > 200 || e.Y < 100 || e.Y > 200) // Box leaved
                {
                    // If we leave the box, we set the position to the center 
                    // and set the event to handled otherwise the mouse is free
                    MouseSimulator.Position = new System.Drawing.Point(150, 150);
                    e.Handled = true;
                    ignoreNext = true;
                }

                // We moved fine, send the delta to the server
                // The MouseSimulator.Position change will not be visible yet.
                server.MouseMove(e.DeltaX, e.DeltaY, true);

            }

            Logger.Log(String.Format("Pos: {0} {1} Delta: {2} {3}", e.X, e.Y, e.DeltaX, e.DeltaY), LogLevel.Info);
        }

Tarion 2009-04-08 23:02:11

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How to send relative mouse movement to another pc

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