windows 8 - Metro style app media capture exception -


i'm writing first metro-style app. days ago i've written code taking photos based on sample (here) , works. release of windows 8 release preview , visual studio 2012 release candidate, same snippet doesn't work. seems there problem access camera in package.appxmanifest i've checked webcam capability. the xaml :

<canvas x:name="previewcanvas1" width="320"  height="240" background='gray'> <image x:name="imageelement1"  width="320" height="240" visibility="collapsed"/> <captureelement x:name="previewelement1" width="320" height="240" /> </canvas> <stackpanel orientation="horizontal" margin="20" horizontalalignment="center">  <button width="120" x:name="btnstartpreview2" click="btnstartpreview_click" isenabled="true"  margin="0,0,10,0"  background="#ffc3c3c3">da webcam</button> <button width="120" x:name="btntakephoto2" click="btntakephoto_click" isenabled="false"  margin="0,0,10,0"  background="#ffc3c3c3">scatta</button> </stackpanel>

and code behind:

mediacapture mediacapturemgr; async void btnstartpreview_click(object sender, routedeventargs e)         {             try             {                  mediacapturemgr = new windows.media.capture.mediacapture();                 await mediacapturemgr.initializeasync();                  previewelement1.source = mediacapturemgr;                  await mediacapturemgr.startpreviewasync();              }             catch (exception ex)             {                 throw new exception(ex.message);             }         }

the exception is: "access denied. (exception hresult: 0x80070005 (e_accessdenied))" said, webcam capability checked!

i solved it. use webcam must indicate in package.appxmanifest application needs access webcam , microphone. strange true!


Comments

Post a Comment

Popular posts from this blog

java - Play! framework 2.0: How to display multiple image? -

i need display gallery of photos. here template: @(photos: list[photo]) @title = { <bold>gallery</bold> } @main(title,"photo"){ <ul class="thumbnails"> @for(photo <- photos) { <li class="span3"> <a href="#" class="thumbnail"> <img src="@photo.path" alt=""> </a> </li> } </ul> } and here controller method: public static result getphotos() { return ok(views.html.photo.gallery.render(photo.get())); } and here photo bean : @entity public class photo extends model { @id public long id; @required public string label; public string path; public photo(string path, string label) { this.path = path; this.label = label; } private static finder<long, photo> find = new finder<long, photo>( long.class, photo.class); public static list<phot...
Read more

gmail - Is there any documentation for read-only access to the Google Contacts API? -

i want read-only access user's google contacts. there stackoverflow member wanted this, , received following answer : yes, there is, use https://www.googleapis.com/auth/contacts.readonly scope , "view contacts". this exchange reference read-only access google contacts can find using google. simply using access token obtained attempt read usual google contacts api (i.e. https://www.google.com/m8/feeds ) fails insufficient permissions. similarly, using google contacts api on new target fails 404 errors (for example https://www.googleapis.com/auth/contacts.readonly/default/full ). is there documentation anywhere on how use api, or permissible way access google contacts api full read-write access?
Read more

php - Controller/JToolBar not working in Joomla 2.5 -

relevant code: jtoolbarhelper::custom('savecategories', 'save', '', 'save', false, false); ... <input type="hidden" name="controller" value="easyblogcontroller"> according can dig docs , own previous questions, should call savecategories() function in easyblogcontroller . i've tried setting value easyblog , easyblog.php (file name) current easyblogcontroller (class name). clicking on save button refreshes page. not redirect, echo or var_dump test code put in savecategories() function. var_dump ing jrequest::getvar('controller') , 'task' return correct values. creating controller object , using $controller->execute('task'); works. the values going depend on location of controller trying call, , have couple options here. typically there controller in base folder of component (likely components/com_easyblog) in file called controller.php , class name inside ...
Read more