my question might be crazy, I know it has to be something like COM, but I need to include and COM a specific version of Web browser in my application no matter what version of the browser the computer currently is using, say to include IE7(dll file or whatever) in the project and COM programming it as a window in C++ application to surf web pages on internet although the default browser in client machine is IE9. And deploy the compiled project with IE7 file(s) to client machines. If IE/COM won't work that way, any other browsers can do the tricks?
Many Thanks!
CanadaYong
No, you cannot "embed" a specific version of Internet Explorer in your application. But you probably don't need to: when you use the IE COM WebBrowser Control in your application, by default it runs in IE7 Compatibility mode. Later modes are only used if you explicitly set the FEATURE_BROWSER_EMULATION registry key listing your executable name.
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I would like to access Bluetooth LE devices using the corresponding UWP APIs. However, my application is a "classic" C++ application (3D game) that can't run as a UWP app. Is there a way to do that? Accorind to enter link description here these APIs are published, but I don't know the steps to access them I have only found some posts for Windows 8/8.1 apps that include the Windows.winmd and Platform.winmd metadata files and set the /ZW compilation flag, but this doesn't seem to apply to Windows 10.
You should be able to do this, as the Bluetooth classes (e.g., BluetoothLEAdvertisement) are marked up with DualApiPartitionAttribute (callable from desktop and UWP apps).
Using one of the older Win8.1 desktop samples should give you a good starting point for calling the APIs without requiring /ZW or referencing the winmd files. A good example is the desktop toast API sample.
If you go that route, you can use classic COM to create the UWP/WinRT classes via WRL helpers.
You can use the web that you make a web server and the C++ application use the same server and if UWP send the info to server then it will send the info to C++ application.
To safe,the UWP can't use the desktop app.
So far, all xpcom examples I saw are Firefox addons. You write some C++ code, build, and register it. This resembles Microsoft COM in-process server, but instead of Windows registry the component information is stored in Firefox profile.
Does Firefox have out-of-the box ability to control it from another process using same API? Somthing like COM's local server application
When you start a second firefox instance, it communicates with the existing firefox process and tells it to open a new window, then dies. I suspect it uses some remote form of xpcom.
I have a webpage where when I click a button, it should download an exe from a url and the exe should get automatically invoked without user intervention.
In Internet Explorer I achieved this through activex control ( .ocx ) deployed as a .cab file.
I am planning to extend this to chrome and firefox platform too. ( atleast chrome for the first step ).
I don't want to use Java applet ( need to remove java dependency ). I know I could achieve this through Firebreath plugin but clearly this is not a good time to dive into NPAPI plugin ( since NPAPI is already being fading out. Chrome has begun phasing out NPAPI ).
When I looked into alternative Plugin technologies to NPAPI, I stumbled upon Google Native Client. On further reading I got to know Nacl too won't fit my needs since os calls api will not work in nacl ( I hope URLDownloadToFile api or createprocess or shellexecute wouldn't work. Correct me if I am wrong ).
Should I go for Native Messaging? Is there anyother alternative technology am missing ? Guide me Please .
NPAPI until it goes away will let you do what you want; other than that Native Messaging is the only option.
As others have mentioned, this is a Really Bad Idea(tm).
Thanks all the people . I finally settled with Launch Application Using Custom Protocol Handler . http://msdn.microsoft.com/en-us/library/ie/aa767914(v=vs.85).aspx . This fitted my needs .
As suggested above, Chrome's native messaging appears to be the way to go - on Chrome.
First, have a look here: This blog entry shows that native messaging can be used to launch "calc.exe". I've yet to try it myself - but it looks promising:
https://plus.google.com/+FrancoisBeaufort/posts/jdTrmmZL9Xh
One thing to keep in mind is that the Native Messaging technique will only work from a Chrome Extension, which opens up an entire set of related questions.
(1) Can Chrome extensions be installed for all users using group policy? or via the registry?
-Yes, according to http://www.chromium.org/administrators/pre-installed-extensions
Later edit: only "published" extensions can be added via the registry. see - https://developer.chrome.com/extensions/external_extensions
(2) Can you detect whether an extension is already installed?
-Yes, Chrome Extension: How to detect if an extension is installed using Content Scripts
So maybe its possible to have a two-phase process:
-Your users will head to the web page, which will test for the extension (using #1 above)
-If its not there, have the users download and install the .exe (this will require interaction).
-The .exe will deploy the extension files and register it for Chrome (using #2 above)
-On subsequent visits, the already-installed extension can be used to launch/communicate with the now-already-installed .exe (using Native Messaging)
I am having a desktop application which having a UI interface made in Qt linked with a library which is doing all the calculation stuff. Values from UI is taken and pass to the API's in the DLL to get the output which is shown on Screen.
Now i want to do the same thing by transferring my application UI to a web page so that people can access the tool from anywhere without any installation process.
I want to retain my c++ DLL code so i don't have to do a lot of work. I am thinking of just converting this DLL to a C++ server by any communication Process(Sockets). I want to host this application on my company's website. (We have to make the website also so we are open to any set of tools).
I want to know what will be the best set of tools to do this stuff. Also there will be lot of data exchange between the webpage and server so the wholething should be optimized also. I goggled a bit and find stuff like silverlight and ASP.NET, But i am still not very clear which option will be more suitable.
I am a c++ programmer with no web application development experience. I am open to learn any new technology.
Thanks
Why not use Qt on the web directly? There are several projects like this one: http://qtwui.sourceforge.net/
There is a netscape plugin that will host a QT application and an ActiveX control wrapper on the QT website. You could use one of those to wrap your application. Note that this approach would require the user (or their administrator) to download and install the plugin.
An alternative approach might be to run your application through a remote desktop such as XVNC, NX or an RDP based layer. IIRC browser based remote desktop clients are available for most such protocols.
A few options:
pick a messaging/queue implementation (like http://www.zeromq.org/) and provide a service
implement a Windows Web Service if you want to be more enterprise friendly: http://msdn.microsoft.com/en-us/magazine/ee335693.aspx
I would not expose the implementation on the internet. Enough to have a simple buffer overflow and the machine can be taken over quickly. Adding a layer between the app and the web provides an easy way to validate input, access, stats ...
You should be able to use your DLL from an wt or cppcms application. Then you do not have to learn something new and can just use C++.
The way I'm currently doing this is with Boost.Python + django
Our company has a set of 3d modeling softwares written in c++ with qt based gui. We are planning to offer these applications to customers to try them from a web browser. I mean to say, we need to create web interfaces for native c++ codes. Please suggest me which technology, languages should be used. If possible please give some links to some white papers or case studies for this kind of projects. I am totally clue less :)
Ideally you would keep your c++ code on the server and use a mixture of HTML and Javascript on the browser. However since 3d modeling is so client centric you may have to run some c++ code directly in the browser.
There are a few options to look at:
Emscripten
Adobe Alchemy
Google Native Client
A Java Applet using NestedVM
Netscape plugin API
ActiveX
You could also run a few instances of your application on your server inside an XVnc session and let people use it through a VNC viewer applet. The simplest solution however is still to offer a downloadable demo of your application.
Have a look at Wt
Take a look at Native Client.
Soon you might be use WebGL to do 3D in the browser. But how long it will take for browsers to include it I do not know. But it might be good to look at it to not rule out using it in the future.
If creating everything again is too expensive, always you can create a distributed application:
One program running the main application in C++ and generating (for example) XML files.
A web application reading the XML files generated by the C++ application and translating them into the web application language (for example Adobe Flex).
Good luck!