How to programmatically Move MouseCursor to make InvisibleCursor

I’m developing an app to run on RPi, so it’s a Linux/Desktop app. I’m using the following in the Activate event of each Window in the app:


…and it works to ‘hide’ the MouseCursor, but only when the mouse position is moved slightly. The app is a touch-screen piece of instrumentation, and I’d like to keep the interface clean and get rid of the mouse all together. For whatever reason the “arrow” cursor appears onscreen when the apps finished showing the Window, and the moment you move the mouse it then properly hides, and stays invisible for the remainder of the time, until you change screens (do a Show of a new Window in the app).

Is there a way for me to call a function to ‘move’ the Cursor off-screen? My assumption is that if I both move it, and hide it, that this will assure the desired behavior.

Thanks for your feedback!


Have you tried that the the app’s open event?

I sure have. In fact I’ve placed that line of code in the App Open event, the Windows Open event, and the Windows Activate event. I’ve currently got it in all three places and the behavior is identical. Again it works to hide the cursor - but only if you wiggle the mouse (or in my case, touch any point on the capacitance touch-screen). Which takes me back to asking, is there a way to programmatically move the mouse off-screen?

That would require declares that do not exist yet. But it seems possible, from this discussion about the same topic in C.

Thanks Michel. I was hoping to keep it all in the Xojo framework - but I appreciate your link. If I find a good solution I’ll post it here.

I see that you have the mouse hidden in open and activate events. What about hiding it in a timer, after the window opens?

I just gave that a try - no good :frowning: I think I’ll tinker with repainting the layout, and other UI updating actions that I can trigger…

Are you sure it has to do with moving the mouse? Sounds to me like the cursor view doesn’t refresh automatically and the move triggers the refresh. Bad thing is: MouseCursor has no view property. Nothing changed then, without declares I see no way. Maybe time for a feedback request to add an invalidate to a mousecursor change? (If it should be the reason)

Check which allows moving the mouse by shell.

You may also try to change the mouse cursor in the window, and do a Window.refresh. It is possible that could reinitialize the mouse cursor.

I’m seeing this effect on the Pi as well.
It doesn’t matter where you put the System.Cursors.Hide statement or if you use me.MouseCursor=System.Cursors.InvisibleCursor, the mouse doesn’t
dissapear until you manually move/wiggle it.

There is a package for raspbian called unclutter that douses the cursor after a second of non-use.
Once gone, it stays gone.

in the app.activate or in a timer.action event i use


while i write the code, it hasn’t got autocompletion, but it works perfect on windows 10. don’t tested on mac or linux, but i guess it will work

You could check the RemoteControlMBS module in MBS Plugins:

there you can move mouse and some people used it to make their own remote control app.

I’m using unclutter to hide the cursor on Linux (Raspberry Pi, Jessie).

Ultimately I’d rather see the Xojo engineers fix the Linux support to correctly hide the cursor. I submitted a feedback case on this a while back titled “System.Cursors.Hide fails on Linux”: <>

If you want this fixed in Xojo please add it to your Top Cases to help it get more points.

Sounds like we’re running out of time to use unclutter now based on other posts here about it [url=]not working on the latest release of Raspbian (Stretch).

From what I have observed, the cursor stays initially because the Xojo app doesn’t automatically get keyboard & mouse focus when it starts. It’s not Xojo’s fault the window manager doesn’t set focus to the app.

The app starts full screen and runs, but the cursor stays ON until you tap/click the screen/window, which forces focus to the app, which then hides the mouse.

I found unclutter to be a simple fix to hide the cursor on startup (before focus changed).

The best solution is to figure out how to grab the focus when the app starts via a declare or shell command.
I’m looking for the solution when I have time.

I found a way to make the mouse pointer disappear without needing to move or click the mouse. What I posted in the link below isn’t a polished final answer (although it might be acceptable).


So, does anyone here have experience calling OS API functions from Xojo? If so, it would be great to call the XWarpPointer from Xojo directly.

In my case my app is launched by the user (portable digital signage needs for conferences) so it gets the focus and the cursor properly hides now …

William Yu at Xojo updated my feedback case to suggest using Self.MouseCursor = System.Cursors.InvisibleCursor and that fixes the issue for my needs. Once my Linux (Raspbian Jessie) app starts up and the user enters a bit of data the app then runs in an unattended mode (digital signage) and the cursor is never needed again in the app.

I don’t recall how I missed setting the cursor to “System.Cursors.InvisibleCursor” unless this was added recently. I see that using this was also mentioned by Wes in another forum thread.