How to take screen shots in windows system using inter systems cache?
Cache doesn't have any built-in way to directly take a screen shot, so the closest you could come is to have a Caché process call something that does know how to take a screen shot. The ways to call out from cache are documented on the Intersystems web site and this same documentation is usually included in a Caché install.
The simplest option (and you don't give enough information to know whether that will work) is probably to call something like $zf(-1,"import -window root screen.jpeg"). In this example, "import -window root screen.jpeg" is a command-line call. $zf(-1) spawns a child process and runs whatever text you give in the second parameter as a command-line call.
I got the specific text for this call from a question on superuser, which you might want to look at if you don't have a screen shot program available that can be called from the command prompt.
If that doesn't work for you, there are other options than $zf(-1) available, but you will probably need to read the linked documentation to decide what works best.
It is impossible. InterSystems Cache is DataBase, you have to use any other languages for it.
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When using chrome developer tools, it appears that each app window (and the background 'page') has its own javascript context (space of objects, thread of execution), and yet the createdWindow callback of chrome.app.window.create apparently provides direct access to the objects of the 'other' window that was just created.
Given that, I'm unclear on the best way to communicate between windows; e.g. if I open a second window to act as a dialog box, when the user clicks OK to save changes, should I be using postMessage, sendMessage, or just call a function on an object in the main window. I've looked at the messaging samples, and they seem focused on communication between two different apps, or between an app and an extension.
So, I'm seeking a clear description of the memory and execution model within one app. Are there really separate contexts, or is it just one space of objects, with one thread of execution? What is the best way to communicate between windows of the same chrome app?
That is a great question James!
Multiple chrome windows are not completely separate. They share a single thread and object space, however the window object is different for each. In javascript unscoped references to things are looked up on the current window, so this makes the windows appear to be different object spaces - but they are not really.
So, you can reach into another window and execute a function there, or manipulate state in other ways (e.g. set a variable on another window to a function from the current window) and it is acceptable and supported.
You might find the chrome.app.window.getAll() and chrome.app.window.get() methods useful. They are however new to Chrome 33 which is not yet in the stable channel.
As an alternative you could hold an array of opened AppWindow objects in the background page context.
You can then get a reference to the background page context from any window using the chrome.runtime.getBackgroundPage() method
I need send calculated image onto screen connected to HDMI output.
How to organize the redirection of output of Mathematica drawing functions to certain computer display?
As I understand, the DisplayFunction settings define where appear my result. Which parameters I have to set for output stream in this case?
P.S. I use Math-9 at Windows 8.
If you are asking how to position a window then the UltraMon
https://www.realtimesoft.com/ultramon/
utility with appropriate arguments can reposition the currently active window onto any desired monitor and this might accomplish what you are asking for.
Or if you can already manage creating and positioning the window yourself and what you are asking is how do you put results from one Mathematica window into into a different window then you might buy or borrow a copy of "An Introduction to Programming with Mathematica" by Wellin, Gaylord and Kamin 3rd or later edition which has chapter 10 describing "front end programming" and all the details needed for sending control and information from one Mathematica window to another. It would be possible to show you a tiny example, but that would likely need more information from you and the example would become more and more complicated and still not have enough for you that the book chapter would much better explain. Looking up NoteBookWrite in the help system might let you decide whether this seems promising for you.
I am trying to automate UI interactions for a C++ MFC application. I tried to find elements' automation ID using UISpy and UIAVerify tools. I am on win2k3.
There is a tab control, the automation ID of which is visible to UISpy but not to UIAVerify.
The issue is - it is not visible even to the C# code that I write using Project White framework or ui automation framework of .net 3.0.
I want to get handle to this control the way UISpy gets it. Is there any way I can find out how UISpy does it?
Thanks!!!
UISpy is likely using Microsoft UI Automation under the covers. You can see how this works from this example*. There are all kinds of conditions on AutomationElement which you can use to locate them.
I've only worked with WPF tabs, but found it really, really hard to locate them by Automation Id. Instead I've been using the AutomationName property, with the title on the tab as the value. Not sure if White supports this, but I'm pretty sure you can get the original AutomationElement out and use it as per the example.
You'll also probably be looking for something supporting the SelectionItemPattern (there's a SelectionItemIsSupportedProperty), and you'll need to use the pattern to select the tab and make it active before you can see anything in it.
Please comment if you need any more info. It might help to know what the structure of your container with tabs in is.
*Declaration of interest since I wrote this.
I want to develop a GWT application. The application contains 8 modules and all the modules run in a single page.
I have links for all the 7 options on the top.
When the page loads I want only the home content to be loaded and displayed.
Only when the user clicks the menu options, the menu content should load.
Can anyone suggest the best way to achieve this.
This has been addressed in GWT 2.0... First you'll remove the separate entry points you have for each module - since they're all on the same page, you only need one entry point per page.
Then you can use the GWT.runAsync() method at each point that you feel can be a split... it automatically cuts up the code into chunks that are downloaded as and when necessary.
Look here for the docs.
AFAIK, lazily loaded (or pluggable) modules can't be done in GWT. Partly this is due to the way the GWT compiler works - it likes to import all the code that it is ever going to see and then optimises and prunes it as viciously as possible (to make the resulting JS files as small and lead as possible). If it doesn't have access to all the source code up front, it might make optimisations that will break the pluggable modules (especially since nothing in the "core" application may reference the classes that the lazily-loaded modules need to work properly - the GWT compiler would prune those "unused" classes in the core module).
This stackoverflow question from May 09 asks the same thing and has the same answer - it can't be done.
I searched high and low about six months ago for an answer to this problem, because I really wanted to do what I believe you're asking for. Never found a solution.
(I haven't used GWT 2.0 - it might have addressed the issue)
Thank you for your answer. You are right that the whole Javascript code gets downloaded.
But there must be a way like say on of module is View Profile. Only when the user clicks the view Profile link, the widgets related to displaying my profile needs to be created. is this not possible.
We we wondering what are some ways developers have added a help function to their apps. What are some techniques people have used?
One way we were thinking of is to us UIWebView to display a HTML file with help instructions.
Thoughts appreciated.
I'm using UIWebView right now which pretty much contains all the help in a single page, along with some JQuery things to display popups, etc. But I like the way iCab Mobile (et al.) are doing things which is a sectioned UITableView with each row a separate topic or section within their overall help information (complete with icons...) then in their bundle they have each section in its own html file, organized by localization.
Another thing in my queue for the next release is to provide a dynamic "News" view. The rough idea is as follows... I have on my server a file or CGI where I can place small bits of news I'd like to push out to users. On startup, my app checks for network availability and if present, start a thread to see if anything has changed on the server since last updating the News data. If changes present, post an alert letting user know, and asking if they'd like to read it now. At that point, the latest news is already downloaded and cached, so they can simply read it later if they want, and I won't post anymore alerts until the server file changes again. (And one could add a preference/setting to disable these alerts.)
I'm thinking this would be a good way to let people know that some nasty bug is known and fixed and an update is sitting in the queue, solicit beta testers, promote upcoming features or other apps, etc. I can see where constant alerts everytime I've got something new to promote would get annoying, so having a setting to disable them means the user never has to read them unless they want to. Although some kind of override to warn of recently discovered/fixed bugs seems sensible.
FWIW, the author of Mover+/Mover has just started doing a similar thing, though I think Emanuele is perhaps only showing one Notelet at a time, whereas I envision a bit more of a history (shown in UIWebView) until I decide to age stuff off the bottom of the stack.
I'm using a scroll/page view to show several images containing small notes. Each image then tells the user about the more advanced functions on a specific part of the app.
In my opinion the help should only contain information that isn't a 100% relevant for the use of the application. It should be things the advanced user should use to make more use of the app. It should contain gold for the power users. The "basics" should be so obvious that no help would ever be needed. If that's not the case, I think, you've failed as a developer on the iPhone platform.
(Here's a screen shot from my demo app)
I'm currently creating a fairly complicated app. I'm thinking of doing help as a semi-transparent overlay - help in text form is hard to swallow for users; it's much more helpful to just point at stuff and say "this does that".