simple question:How I control my activex is installed on the client?
var p;
try {
p = new ActiveXObject('your activex control name');
}
catch (e) {
alert("not installed");
}
its really simple isnt it? good programming :)
The main way is to try creating an instance of it. If the creation fails, then the activex control is NOT installed or some other error happened.
Related
I have old code, and I'm not sure how to change it, I need to use the old .returnValue, but it isn't there anymore, how can I fix this?
rootElement.onSelectStart.listen((Event e) {
e.returnValue = false;
});
Thanks
As far as I know this indicates if the event was cancelled.
I think defaultPrevented is what you are looking for.
http://api.dartlang.org/docs/channels/stable/latest/dart_html/Event.html#preventDefault
http://api.dartlang.org/docs/channels/stable/latest/dart_html/Event.html#defaultPrevented
See example here: http://jsfiddle.net/KK36F/2/
How to solve this?
My old answer of:
http://jsfiddle.net/KK36F/5/
I've used jQuery noConflict to work around flowPlayer. As I can't
reproduce your problem (flowPlayer is blocked on my site rrrrr) it's
the best I can do.
Didn't work... I've managed to reproduce the problem and track it down to a line in the flowplayer code:
// skip IE policies
document.ondragstart = function () { return false; };
If you make this safer (as it is a JScript only IE thing), the draggable works again.
if(document.ondragstart) {
document.ondragstart = function () { return false; };
}
I'm very much newbie to VS Addins.
Although, I subscribed to DocumentEvent.DocumentOpened. But additionally, I need to detect if already opened document got focus and I will read its contents then.
How to get its focused state?
Thanks
Farrukh
Luckily, after playing some sample code, I've got what I want. Its actually EnvDTE.WindowEvents.
In VS IDE, every Code Document is also a Window. And it has the Focus event: WindowActivated. Here is my delegate to subscribe for this event:
WinEvents.WindowActivated += new _dispWindowEvents_WindowActivatedEventHandler(WinEvents_WindowActivated);
void WinEvents_WindowActivated(Window GotFocus, Window LostFocus)
{
Debug.WriteLine("GotFocus: " + GotFocus.Caption );
//throw new NotImplementedException();
}
Best regards
Farrukh
I am working on a asp.net mvc site that uses facebook social widgets. Whenever I launch the debugger (ie9 is the browser) I get many error popups with: Error: '__flash__removeCallback' is undefined.
To verify that my code was not responsible I just created a brand new asp.net mvc site and hit F5.
If you navigate to this url: http://developers.facebook.com/docs/guides/web/#plugins you will see the pop-ups appearing.
When using other browsers the pop-up does not appear.
I had been using the latest ie9 beta before updating to ie9 RTM yesterday and had not run into this issue.
As you can imagine it is extremely annoying...
How can I stop those popups?
Can someone else reproduce this?
Thank you!
I can't seem to solve this either, but I can at least hide it for my users:
$('#video iframe').attr('src', '').hide();
try {
$('#video').remove();
} catch(ex) {}
The first line prevents the issue from screwing up the page; the second eats the error when jquery removes it from the DOM explicitly. In my case I was replacing the HTML of a container several parents above this tag and exposing this exception to the user until this fix.
I'm answering this as this drove me up the wall today.
It's caused by flash, usually when you haven't put a unique id on your embed object so it selects the wrong element.
The quickest (and best) way to solve this is to just:
add a UNIQUE id to your embed/object
Now this doesn't always seem to solve it, I had one site where it just would not go away no matter what elements I set the id on (I suspect it was the video player I was asked to use by the client).
This javascript code (using jQuery's on document load, replace with your favourite alternative) will get rid of it. Now this obviously won't remove the callback on certain elements. They must want to remove it for a reason, perhaps it will lead to a gradual memory leak on your site in javascript, but it's probably trivial.
this is a secondary (and non-optimal) solution
$(function () {
setTimeout(function () {
if (typeof __flash__removeCallback != "undefined") {
__flash__removeCallback = __flash__removeCallback__replace;
} else {
setTimeout(arguments.callee, 50);
}
}, 50);
});
function __flash__removeCallback__replace(instance, name) {
if(instance != null)
instance[name] = null;
}
I got the solution.
try {
ytplayer.getIframe().src='';
} catch(ex) {
}
It's been over a months since I last needed to debug the project.
Facebook has now fixed this issue. The annoying pop-up no longer shows up.
I have not changed anything.
Does anyone know what might have changed since v3.0.5 that would enable extensions to work? Or, maybe I'm missing a setting somewhere? I wrote this add-on that works fine with newer versions, but I can't get it to launch in older ones. Specifically, I can't even get this part to work (this is in my browser overlay.xul):
<html:script>
<![CDATA[
var Cc = Components.classes;
var Ci = Components.interfaces;
var obSvc = Cc["#mozilla.org/observer-service;1"].getService(Ci.nsIObserverService);
gBrowser.consoleService = Cc["#mozilla.org/consoleservice;1"].getService(Ci.nsIConsoleService);
gBrowser.log = function(msg){
this.consoleService.logStringMessage(msg);
}
gBrowser.newObj= new MyAddOn();
gBrowser.log("initializing...");
function regListener()
{
obSvc.addObserver(gBrowser.newObj, "http-on-modify-request", false);
}
function unregListener()
{
obSvc.removeObserver(gBrowser.newObj, "http-on-modify-request");
}
window.addEventListener("load", regListener, false);
window.addEventListener("unload", unregListener, false);
]]>
This should attach listeners to the new obj (defined by a linked .js) However, I'm not even getting the "initializing..." message in the console. Any ideas?
Don't use <html:script>, use <script> (assuming you have xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" on your root <overlay> element).
Don't register an application-global listener (http-on-modify-request) from a window overlay. Doing so will make your code run one time in each window the user may have open. Use an XPCOM component instead - https://developer.mozilla.org/en/Setting_HTTP_request_headers
Don't pollute common objects (like gBrowser or the global object (with var Cc)) with your own properties. If everyone did that, no two extensions would work together. Put all your code properties on your own object with a unique name.
accessing gBrowser before the load event is probably what's causing your specific problem.
Set up your environment and check the Error Console to debug problems.
Don't waste time trying to support Firefox 3. It's not supported by Mozilla itself for over a year and shouldn't be used to access the web.
It looks like gBrowser.log is not defined, or at least is not a function, as the error console will probably tell you. I've never heard of it either. Maybe it was added in Fx 3.5?