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  • Fix: WordPress administration UI content area showing up blank

    Some time ago, at a WordPress 3.3 blog, a friend was getting a blank main area at the administration UI (just the menu was showing up there) when they visited the classic URL of the form http://somesite/wp-admin/. Here is a writeup of some notes I had kept while troubleshooting that issue and then upgrading to […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Νοεμβρίου 16, 2017
  • HowTo: Hide HTML markup from non-signedin users at MonoX Social CMS

    At MonoX Social CMS, which I use at both ClipFlair Social and Trafilm websites, I was in the need of hiding some HTML markup when the user is not signed-in. The solution for this is to add runat="server" to the HMTL element one wants to hide and then set the Visible property that the object […]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Μαΐου 26, 2016
  • HowTo: Drop files onto Silverlight controls

    I was recently adding drop-files support to ClipFlair Studio, so I had to do some research on the related API that is available to Silverlight apps. Silverlight supports a limited set of Drag-and-Drop interaction with the operating system (supposedly for security reasons, but most probably because of the classic cross-platform implementation ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Μαρτίου 27, 2014
  • Gotcha: OnLostMouseCapture always called by CaptureMouse at WPF

    It seems that CaptureMouse is behaving differently in WPF and Silverlight, in that in the former one it immediately calls OnLostMouseCapture at a Visual, whereas in Silverlight it doesn’t get called if the element didn’t have the mouse capture already (btw, in Silverlight that method is at a UIElement – there is no Visual ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Μαρτίου 14, 2014
  • HowTo: find max ZIndex from a collection of UIElements with LINQ

    My contribution to http://stackoverflow.com/questions/1101841/linq-how-to-perform-max-on-a-property-of-all-objects-in-a-collection-and-ret Based on  another answer there, here is what I’ve just added to my enhanced version of SilverFlow library’s FloatingWindowHost (copying from FloatingWindowHost.cs at ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Δεκεμβρίου 6, 2013
  • Gotcha: .NET Point and PointConverter inconsistency in string format used

    I have submitted the following issue to Microsoft Connect (product feedback center): http://connect.microsoft.com/VisualStudio/feedback/details/809084/point-class-issue-with-two-way-databinding Point class issue with two-way databinding   In Silverlight, when using databinding code like the following: <StackPanel ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Νοεμβρίου 22, 2013
  • HowTo: use a Timer component for delayed execution in WinForms

    This is my contribution to: http://stackoverflow.com/questions/303116/system-windows-threading-dispatcher-and-winforms Sometimes a Timer component is useful and easy to setup in WinForms, just set its interval and then enable it, then make sure the first thing you do in its Tick event handler is to disable itself. I think Timer runs the code in ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Αυγούστου 25, 2013
  • Fix: Silverlight Media Framework Player VolumeElement out of sync

    I was just adding a storable (persistent) Volume property to the MediaPlayerView class used at ClipFlair’s MediaPlayerWindow (connected to the underlying SMF player’s VolumeLevel property), when I realized that after reloading saved state, the SMF player’s Volume control would show a different value than the value set to it (which I could confirm ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Φεβρουαρίου 11, 2013
  • Can’t step-through Silverlight file dialogs with Visual Studio debugger

    While stepping through “ShowDialog()” method of OpenFileDialog with Visual Studio 2010 debugger, at the Silverlight code pictured below (for loading a ClipFlair window’s stored options), I got a “Dialogs must be user-initiated” exception. Same behaviour will be shown with SaveFileDialog too, every time you try to step through the “ShowDialog()” ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Δεκεμβρίου 2, 2012
  • PivotViewer for a rich search experience

    For ClipFlair, I’m looking into implementing advanced search using Silverlight PivotViewer   A really nice example of PivotViewer search is at: http://www.appletoncompassion.org/VirtualExhibitViewer This may take long time to load, since its loading 10000 children art DeepZoom image tiles You can use the mousewheel to zoom in there or the ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Νοεμβρίου 28, 2012
  • HowTo: Remove Skype from Windows taskbar, keep as Taskbar tray icon

    An annoying feature of Skype of recent Skype versions is that by default it shows an icon on the Windows taskbar apart from the one at the taskbar tray while you’re signed in. This also means it shows in the ALT+TAB key sequence when switching between open windows, which you might not always want to [...]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Νοεμβρίου 25, 2012
  • HowTo: Hide Video area of Silverlight Media Framework Player

    Since our onoing project ClipFlair is a follow-up of the succesful project LeViS, during its development I’m also looking at covering possible use-cases I infer from feedback entries at LvS application issue tracker on Codeplex (note that ClipFlair is also opensourced on Codeplex at http://ClipFlair.codeplex.com). One such issue ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Οκτωβρίου 3, 2012
  • HowTo: Scale control arround its center using a render transform

    In the context of ClipFlair development, I was recently adding independent scaling (zooming) functionality to its ZUI container’s floating windows (apart from the container zooming functionality) and came across some strange behavior, where the windows seemed to also move apart from getting scaled. After banging my head a bit I decided to take a ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Αυγούστου 15, 2012
  • HowTo: Set UI language (CurrentUICulture) in Silverlight

    At LvS (the opensource application of LeViS), I’ve been using this (VB.net) code to set the UI language (for example to Greek): Thread.CurrentThread.CurrentUICulture = CultureInfo.GetCultureInfo("el") Others seem to have been using (C# – that’s why there is a trailing semicolon): Thread.CurrentThread.CurrentCulture = ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Ιουνίου 20, 2012
  • Zoom and Pan control for WPF and Silverlight (via WPF compatibility layer)

    I’ve managed to combine http://www.codeproject.com/Articles/85603/A-WPF-custom-control-for-zooming-and-panning and a cut-down version of it for Silverlight that was out there: http://www.codeproject.com/Articles/167453/A-Silverlight-custom-control-for-zooming-and-panni I did it in a way that the Silverlight version is source-code compatible ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Ιουνίου 18, 2012
  • HowTo: Load a XAML ResourceDictionary from a .NET assembly

    Copying here my answer at: http://social.msdn.microsoft.com/Forums/en-US/wpf/thread/11a42336-8d87-4656-91a3-275413d3cc19 What seems to work for me is the following (copying from the source code of http://ClipFlair.codeplex.com [currently under development]) note I’m using Build Action = "Page" and Custom ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Ιουνίου 11, 2012
  • What to do if Generic.xaml doesn’t get loaded for WPF control

    Just came across http://wangmo.wordpress.com/2007/09/27/themesgenericxaml/ which gave me a hint on why a WPF control wasn’t getting instantiated correctly when loaded from an external assembly (dll): to load generic.xaml for WPF, at the start of Properties\AssemblyInfo.cs you need (note this isn’t used/needed in Silverlight): using System.Windows; ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Ιουνίου 10, 2012
  • Pinned tabs and Split-Screen

    Since widescreen format in monitors gets more and more common, how about a twist to the classic tabbed windows UI? Imagine being able to pin a tab and have it move to a side-view area in the same window. That are would keep the pinned tabs separated from the rest using a splitter / split-view [...]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Φεβρουαρίου 17, 2012
  • Tip: Quick way to change taskbar tray icon visibility

    Windows 7 has kept the taskbar tray from previous versions of Windows, but is providing a different means of managing which icons always show up and when (e.g. can set a specific icon to show up only if they have notifications, or even to never show up on the tray). When you press the “up” [...]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Οκτωβρίου 6, 2011
  • Tip: Display Process Task menu without right click

    You probably know already that on Windows 7 you can right click icons for executing tasks (applications) on the taskbar and select to Pin them there. You must have also noticed that Windows 7 aware applications show common tasks there, while Windows also shows recent files opened by some application even at cases where the [...]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Οκτωβρίου 6, 2011
  • Microsoft Expression Blend – learning and community resources

    Copying from Expression Blend 4 User Guide’s “Learning and community resources” section: Apart from this User Guide, the following additional content and resources are available. Expression Blend and other Expression Studio products Expression community website (training, tutorials, videos, and webcasts) Expression Blend and Expression Design team ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Ιουλίου 2, 2011
  • Twitter bug calls you a moron?

    Now who has to be more clever? Me or the Twitter programmers who apart from not being polite have managed to fail in simple character counting? They have added automatic link shortening if your message exceeds 140 chars, but fail to count the resulting chars correctly and allow you to press the Tweet button which [...]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Ιουνίου 13, 2011
  • IE9 RC: Where’s that download manager?

    Internet Explorer 9 (IE9) has at last introduced a nice download manager, as shown below. This was long needed, since in IE8 there were cases were downloads with the same filename, when launched from different windows, could get corrupted. The download manager will also show resume download button when needed. IE8 could also resume downloads, [...]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Φεβρουαρίου 18, 2011
  • IE9 RC bug: page changes IE back/forward colors and prepends icon, maintained for window session

    Strange IE9 RC bug: visited http://www.vodafone.gr/portal/client/cms/viewCmsPage.action?pageId=0515 (via http://bit.ly/vodafone1kai1_xatzigiannis) and then clicked back several times seeing the above strange back/forward buttons (red color) and a Vodafone icon prefixed before them! Closing the window fixed the issue. Are they using some hidden ...
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Φεβρουαρίου 15, 2011
  • Suggestion: triple-click to select row in InputBox/TextBox and paragraph in RichTextBox

    In upcoming Internet Explorer version (IE9), one can triple click text in a webpage to select a whole paragraph (vs double-clicking that already existed to select a whole word) of text. A really useful feature I believe (if coupled with an accelerator to send selected content to social networks it would be even nicer) I’d [...]
    Δημοσιεύτηκε στο George Birbilis' blog (Weblog) από το μέλος birbilis στις Οκτωβρίου 5, 2010
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