I am creating a program for Ubuntu which should be able to display an image (probably animated) over the top of all windows, although if the image is over the top of a button on an application, it shouldn't prevent you from pressing that button, or interacting with anything else on the screen.  I saw that there was already a question asking about almost the same thing here , although I see that that one was closed for some reason and did not receive any answers, so I am asking again. How could this be achieved? I am running Ubuntu GNOME 15.04.
I want a translucent PNG overlayed on top of my screen (above all windows). I'm using this to mark a visible region while streaming.   So far I've figured out that qiv -transparent filename.png will add a mask to the window, but it's a boolean mask. I don't get translucent fading with the alpha channel.  I know several effects have opacity, and I can sent window opacity, so I'm hoping there's some way to display an image that way.  What program, tool, or widget can I use to blend an image onto the top of the desktop?
Could someone please explain? I couldn't find anything on the internet, everything talks about how to go about it in some way, but nothing says exactly what it is.   Also, what is a fully trusted assembly and how do they differ from one another?  I have a MS certification exam and this is the only topic that I just don't understand.  EDIT: Thanks guys. Now I have a better understanding of security in .NET. I was able to pass my certification exam. Problems with \input{table.tex}\hline after 2020 fall LaTeX release Since updating to the 2020 Fall release (MikTeX on Windows but also tested with TeXLive), I can no longer compile files where tables are imported from an external file using \input and followed by \hline (or \bottomrule). Things work perfectly with older releases. Note that it works if the last \\ is outside the file to be imported, but this is not a feasible option if the tables are created automatically from other softwares. Here is a MWE:  \begin{document}  \begin{table}   \caption{Table in text}   \begin{tabular}{lcc}     a &amp; 1 &amp; 2\\     b &amp; 1 &amp; 2\\     \hline   \end{tabular} \end{table}  \begin{table}   \caption{Table in other file 1}   \begin{tabular}{lcc}     \input{table1}     \hline   \end{tabular} \end{table}  \begin{table}   \caption{Table in other file 2}   \begin{tabular}{lcc}     \input{table2}\\     \hline   \end{tabular} \end{table}  \end{document}  with external files: table1.tex:     a &amp; 1 &amp; 2\\     b &amp; 1 &amp; 2\\  table2.tex:     a &amp; 1 &amp; 2\\     b &amp; 1 &amp; 2  Here is the log when it fails: This is pdfTeX, Version 3.14159265-2.6-1.40.21 (MiKTeX 20.10) entering extended mode (MWE.tex LaTeX2e &lt;2020-10-01&gt; patch level 1 L3 programming layer &lt;2020-10-05&gt; xparse &lt;2020-03-03&gt; (&quot;C:\Program Files\MiKTeX\tex/latex/base\article.cls&quot; Document Class: article 2020/04/10 v1.4m Standard LaTeX document class (&quot;C:\Program Files\MiKTeX\tex/latex/base\size10.clo&quot;)) (&quot;C:\Program Files\MiKTeX\tex/latex/l3backend\l3backend-pdftex.def&quot;) (MWE.aux) (table1.tex) ! Misplaced \noalign. \hline -&gt;\noalign                    {\ifnum 0=`}\fi \hrule \@height \arrayrulewidth \futurelet... l.18     \hline                 ! You can't use `\hrule' here except with leaders. \hline -&gt;\noalign {\ifnum 0=`}\fi \hrule                                           \@height \arrayrulewidth \futurelet... l.18     \hline                 ! Missing number, treated as zero. &lt;to be read again&gt;                     \futurelet  l.18     \hline                 ! Illegal unit of measure (pt inserted). &lt;to be read again&gt;                     \futurelet  l.18     \hline                 (table2.tex) [1{C:/Users/Gouel/AppData/Local/MiKTeX/pdftex/config/pdftex.map}] (MWE.aux) ) (see the transcript file for additional information)&lt;C:/Program Files/MiKTeX/fo nts/type1/public/amsfonts/cm/cmr10.pfb&gt; Output written on MWE.pdf (1 page, 14750 bytes). Transcript written on MWE.log.  With an older release under Linux, it works perfectly: This is pdfTeX, Version 3.14159265-2.6-1.40.20 (TeX Live 2019/Debian) (preloaded format=pdflatex)  restricted \write18 enabled. entering extended mode (./MWE.tex LaTeX2e &lt;2020-02-02&gt; patch level 2 L3 programming layer &lt;2020-02-14&gt; (/usr/share/texlive/texmf-dist/tex/latex/base/article.cls Document Class: article 2019/12/20 v1.4l Standard LaTeX document class (/usr/share/texlive/texmf-dist/tex/latex/base/size10.clo)) (/usr/share/texlive/texmf-dist/tex/latex/l3backend/l3backend-pdfmode.def) (./MWE.aux) (./table1.tex) (./table2.tex) [1{/var/lib/texmf/fonts/map/pdftex/up dmap/pdftex.map}] (./MWE.aux) )&lt;/usr/share/texlive/texmf-dist/fonts/type1/publi c/amsfonts/cm/cmr10.pfb&gt; Output written on MWE.pdf (1 page, 13788 bytes). Transcript written on MWE.log. In basic chemistry, we are taught that an atom has roughly the same number of neutrons and number of protons, this doesn't seems to hold for larger atoms, but it is always roughly proportional (i.e. you seldom find an atom with 100 protons but 1 neutron, that just does not happen). Why is that? How to show $a^{2^n}+1 \mid a^{2^m}-1$? I've been struggling with this all day today. I imagine it's not very hard, but my algebra skills are terrible. So, how can I show that if $m&gt;n$ and $a$ is a positive integer, then $$a^{2^n}+1 \mid a^{2^m}-1.$$ I just can't get a coherent picture of what I'm supposed to do. If this too (see yesterday's question) boils down to the Unique Factorization Theorem, I would be very grateful for any intuition on how to think about this! Make an object invisible to a specific camera? (Cycles) I'm trying to set up multiple cameras for a scene set in a room. Is there a way to link object visibility to a specific camera? Ideally, a wall or ceiling would not render if it were in the way of the specified camera.  I've tried to get around this by keyframing Restrict Rendering, but that gets difficult to keep track of. I've also tried adjusting the clipping plane, but that clips too much and would also need to be keyframed if the camera moves.   Thanks! I've noticed that apps (such as Google Contacts Sync) that have been disabled using the stock Android (KitKat) app manager still show up as running when using process observer tools.  This is true even after the device has been rebooted.  Why are disabled apps still running?  Is there an effective (and safe) way to actually disable them?  Solutions requiring root privileges are acceptable.   (Note that for the specific example above, you can tell Android not to sync your contacts, but it still runs the Google Contacts Sync process.  But let's not dwell on that example... it's just an example.) Plotting function defined with Lua doesn't do anything Proving that the unities of a ring form a group under multiplication How can I do a full shutdown of windows 10 without logging in? I have a computer with both Windows 10 and Ubuntu 17.04 installed on it. I can't log in to Windows, and think it's a problem with the registry. Luckily, there is a way to restore the registry from backup from Ubuntu, but you have to be able to modify files on the Windows partition. Right now, I can't write to the NTFS partition because Windows didn't do a full shutdown.  How can I force windows 10 to do a full shutdown without being able to log in? The foreach identifier and closures I have seen many ways to make a USB an installer for about any Windows OS. But how can I (using grub or something like that) make it bootable to all editions on Windows XP and 7?   I have tried Googling it and researching, I've even tried to do it, But I dont understand much about GRUB or linux at all.  Please keep in mind that I am not very good with linux, so please use as many details as possible. Line of Bones to Travel and Conform to Curve (Train or snake following path) I've searched google extensively on this. Can't seem to find an answer.   I know about spline IK, which is wonderful for conforming a row of bones to a path. But combining the armature object with a follow path modifier causes the point of origin to move, but the bones themselves stick to the beginning of curve.   Ultimately my goal is to make a creature like a snake or centipede follow a curve path, thus animating it fairly realistically ... Installing File Geodatabase (*.gdb) support in QGIS? I have spent around 2 days to find the way to open GDB (Esri geodatabase) in QGIS (or any other open source software) but still without success.  I have downloaded the newest OSGeo4W installer and tried the setup - express desktop install - all packages, as well as advanced install incl gdal-filegdb.  Can you describe a more detailed procedure, including installation and how to open .gdb in QGIS (OSGeo4W installation)? the weak form of 'on' I am confused at whether or not there is a weak form at preposition's 'ON'. I've checked at some dictionaries at Cambridge and Oxford dictionary, they don't mention on the weak form's pronunciation. However, I, am a Japanese, checked at English-Japanese dictionaries, they mention on the weak form as /ən/.  For example, is there the difference of pronunciation between 'It goes on' and 'There is an apple on the table' in connected speech?  Does it exist?  Thanks Yuichi  *It's Edited How does the clean Installation of Windows 10 after the free upgrade work? I have not found any information from MS - only speculations from people like me, so I hope someone here has had better findings.  When I upgrade a qualified version of Windows to Windows 10 and then want to do a clean install, I've heard that the installer won't ask for a key. But what if my HDD is formatted before I attempt the clean install? How does Windows 10 try to detect the valid "upgraded" status? It seems that it doesn't in such a case, at least as far as I've tested.  So my question is: In that (or a similar) scenario: How do you clean install Windows 10?  In my case it's actually even more complicated. I'm from Germany so I can re-use OEM-licenses due to law. I have two qualified Windows OEM licenses which I both installed in a VM on my Linux installation and upgraded both to Windows 10.  Now I want to install one of them onto my bare physical machine - how would that be possible? Is there an official way of doing this or do I need to wait for those unofficial "backup license"-tools being updated to work with Windows 10? When I run this command :  apt install libkf5*   I get the following error :  Unable to locate package libkf5*    I'm sure that the packages whose names start with libkf5 exist (tab-completion says so) . So the problem is not about the absence of those packages.(Note the asterisk at the end of that error message , the wildcard's not working at all) I use apt v.1.9. Thanks in advance. How do I remove a property from a JavaScript object? In the simple linear regression model, $\hat{\beta}$ is the sum of independent normally distributed random variables.  Is it false because in linear regression there is $\beta$ and not $\hat{\beta}$? What I'm trying to understand is, to what degree does the status/rank of the University (where one completes his/her Ph.D) matter while shaping his/her career after graduation? I would like to know the weight given to one's school in both the following cases:   While applying for post-docs/faculty positions in academia While applying to industrial research labs   For instance, I've read on some forums (I can't locate the link now) that while considering prospective applications for tenure-track faculty positions, very few Universities accept a candidate who has completed his/her Ph.D from a lower ranked school having a lesser "brand" value, irrespective of the fact whether he/she has published equally original work as his/her counterpart from an Ivy league college. How much truth is in this statement? It would be really great if someone already in academia, either as a newly-accepted faculty or someone on the Faculty Hiring committee could share their experiences/statistics on this regard. I'm simply interested to know the answer, without commenting at all on whether such a practice is justifiable.  Similarly, what about recruitment to internationally acclaimed research labs (like  or ) - what importance do they place on the pedigree of a candidate's college, before taking into consideration what they published ?  I'm personally interested in answers related to the field of Computer Science (theory), but the question is applicable to any prospective grad student in any discipline in my opinion. Feel free to share your personal experiences post-Ph.D in detail, as that would give me (and future viewers of this question) about what its like to carve a career once you are out of school! Kate forces itself to be the default application for HTML