C#, Root, UI, Windows Phone

A Custom (Async) MessageBox for WPF and Windows Phone

The System.Windows.MessageBox provided by .NET is limited to a very small set of MessageBoxButtons (Yes/No/OK/Cancel) which do not allow for custom Button texts. The System.Windows.Forms.MessageBox also blocks the UI thread, which can be an annoying disadvantage as well. The MessageBox on Windows Phone has the same disadvantages. Custom buttons in a MessageBoxe simplify the decision for the user, because they can describe the results of the action: However you need to do this with a custom control, so for WPF as well as Windows Phone I designed a simple method for asynchronously showing a MessageBox with custom buttons. (The WPF implementation based on this control by Evan Wondrasek) So let’s bring some sample code.In WPF you can use multiple custom buttons: And on Windows Phone you’re limited to 2 buttons: To use CustomMessageBox, you need to get TCD.Controls from NuGet: And on Windows Phone 7.x you also need async support,…

C#, Root, UI, Windows 8, WinRT

Localizing Enums (in a ComboBox)

Enums have many useful applications and are often used in CoboBoxes to let the user select things. In the code behind the enum values are often defined using more or less cryptic text, because neither spaces, special characters, or leading numbers can be used in enum values (for good reasons!). Therefor it is necessary to change the text to something more understandable (language-localized in some cases). One way to achieve this is to create the ComboBox items manually, but it’s much more comfortable to fill the ComboBox items directly with the enum values, because you can get/set the SelectedItem without converting it back and forth from/to the enum value. You can’t override the .ToString() method of the Enum type, so we have to come up with another solution. Just like any other control, the ComboBox uses a Template to create its items. We will replace the default template with one…

C#, UI, Windows 8, WinRT

Keyboard Dismissing ComboBox

In the last few days I came across a design issue with the touch keyboard on Windows 8. The keyboard dismissal logic (documented here) defines a list of controls which do not cause the keyboard to dismiss when they get focused. The purpose is to prevent the keyboard from opening and closing all the time when the user fills out a form and is likely to switch between keyboard-editable controls such as TextBox and other controls like AppBar, Checkbox, RadioButtons the ComboBox and some more. While that works fine with the other controls, ComboBox expands when interacted with and might get covered by the touch keyboard. And unfortunately you can’t change that behavior, or manually dismiss a deployed touch keyboard. (The user is in complete control over the keyboard.) While on the MSDN forums it was suggested to alter the layout such that the ComboBox is less likely to collide with the…

C#, Kinect, UI, Windows 8


EDIT: If you’re interested in Skeleton tracking and calculating 3D stuff, take a look at TCD.Mathematics too^^ EDIT: There’s a WPF application that I once wrote, featuring SkeletonPainter3D: Kinect Sword. There’s a Youtube video of it (http://youtu.be/2j6GCd4M1bA) and that’s the source code: http://dl.dropbox.com/u/7813771/Blog/CodeSamples/KinectSword.zip   Hello there, I’ve created another UserControl, this time for Kinect and .NET 4.5, which hopefully has the potential to save you a lot of time. It can be used to draw three-dimensional Skeletons and explore the virtual space around them in real-time. A picture may be more appropriate: The control can be constructed in XAML: xmlns:kinect=”clr-namespace:TCD.Kinect.Controls;assembly=TCD.Kinect.Controls” <kinect:SkeletonPainter3D x:Name=”painter” Background=”Black” IsAnaglyphEnabled=”False” CameraFieldOfView=”70″ CameraPosition=”0,0.5,-1″ CameraLookAt=”0,0,2″ /> And populated with Skeletons using painter.Draw(skeletons), where skeletons is an Skeleton[] from inside the SkeletonFrameReady event. You can either get the TCD.Kinect package from NuGet, or refer to the sample implementation: http://code.msdn.microsoft.com/Implementation-of-f175b025 Let me know if you have any questions or suggestions, and by the way: SkeletonPainter3D has an experimental…

Software, UI, Windows 8


Hello world, Today I proudly present: TouchInjector TouchInjector is a Windows 8 Desktop application that translates TUIO into Windows Touch messages. It’s lightweight, easy to use and does not get in the way. No installation is required and with one click you can customize it to autorun with the system (on logon). As I frequently change my display settings, TouchInjector observes them and reacts accordingly. You can download it here. There are no further software requirements than a Windows 8 system. Just unzip, unblock and run it. (Allow access through the firewall and make sure that no other TUIO clients block the port.) Have fun! ~theCake

C#, UI, Windows 8

Windows 8 TouchInjection with C#

The Windows 8 platform provides an API to inject touch events (WM_TOUCH..) via a C++ API. The API is relatively easy to use, but not available in C#, unless you do DllImport/PInvoke. I found this to be kind of tricky, but finally I succeeded to make a C# library that can be used to use the TouchInjection API from C#. You can find TCD.System.TouchInjection on NuGet, or have a look at the TouchInjection.cs file itself. You may notice that I renamed all the strucs, enums and classes to look nicer than their C++ counterparts. The IntelliSense descriptions are available for almost everything! (I got them from the documentation on msdn..) I’ve made a sample application for the MSDN Code Gallery as well. Here’s a small collection of useful resources regarding the TouchInjection API: C++ sample application C++ TouchInjection API walkthrough

C#, Metro, UI, Windows 8, Windows Phone, WinRT


This is a summary and manual for all controls inside the TCD.Controls package. I’ll try to keep it updated. Windows 8 SilentTextBox – If AcceptsReturn=False and the user hits Enter normal TextBoxes make a ‘bling’ sound. SilentTextBox does not. HeaderedTextBox – A TextBox with a grey header above HeaderedTextBlock – A TextBlock with a grey header above; Automatically hides itself if the Text property is empty (unless AutoHide is set to False). LabeledProgressBar – a ProgressBar coupled with a TextBlock/Label; use it at the top of your page to indicate background progress (like the SystemTray.ProgressBar on Windows Phone) LayoutAwarePage – same as in all the samples Flyout – most recent post and how to use on Flyout SettingsContractWrapper – the easy way to integrate with the settings contract   Windows Phone CustomMessageBox – Async CustomMessageBox on Windows Phone ReverseAutocompletePopup – Making a reverse Autocomplete-TextBox on Windows Phone

C#, UI, Windows Phone, WinRT


Just another TCD namespace: TCD.Device. Its purpose is to contain additional namespaces that use features like Camera, GPS, Accelerometer, Compass.. Everything that has an effect on the App permissions the user sees on the Windows Phone or Windows 8 application. (Like ‘This app has access to your location, compass..’) TCD.Device.Camera CodeScannerPopup is another async control, specific to the Windows Phone platform, that can be used to scan for QR codes. (In theory other 2D-codes as well.) Usage: add the TCD.Device.Camera NuGet package add using directives for TCD.Device.Camera and TCD.Device.Camera.Barcodes in the calling method (eg. a Button.Click event) hide/show ApplicationBar, attach/remove BackKeyPress event Code sample: private async void Button_Click(object sender, RoutedEventArgs e) { CodeScannerPopup scp = new CodeScannerPopup(Microsoft.Phone.Shell.SystemTray.IsVisible, Format.ALL_1D); //important: hide ApplicationBar and handle BackKeyPress ApplicationBar.IsVisible = false; this.BackKeyPress += scp.HandleBackKeyPress; //now let’s go ScanResult r = await scp.ShowAsync(“BARCODE SCANNER”, “scan”); if (r != null) output.Text = string.Format(“{0}n{1}”, r.Text, r.Format.ToString()); //clean…

C#, Metro, UI, WinRT

TCD.Controls – Flyouts for XAML/C#

Hey there, Let’s start with the most important news: TCD.Controls is now available on NuGet (click here if you don’t know how this works, or why you want to use it) From now on, I won’t link *.zip packages with the sources anymore, because NuGet really make life easier. If you want access to the source files, just drop me an email There’s been one more or less important change to the Flyout control you should know about: It now has a property called “IsIgnoreLightDismissal”. To understand its purpose, imagine the following scenario (video below) You have a Button control that opens a FilePicker/FolderPicker, asking the user to select a File/Folder. This Button is hosted inside a Flyout control. Now when the user taps the Button, the Picker will popup, stealing the focus from your applications Window. Flyouts are required to hide on App-switch by the design guidelines, which is…