June 1, 2010, 19:55
Although there are well know ways to update the GUI from a background thread not running in the GUI thread, I looked for an easiest to use solution. After some experiments I got a background thread class that is very easy to use. No BeginInvoke or Control.Invoke needed any more to update a GUI element.
The final solution uses a MessageWindow inside a control based class with a worker thread. As the control and the MessageWindow is part of the GUI thread, there is no need to use Invokes.
Inside the thread I use SendMessage to transfer background thread informations to the control, which then fires an event you can subscribe in the GUI thread.
The test app attached shows three threads running independently and all update the GUI frequently without blocking the GUI.
Here is my try to visualize my idea and solution
Continue reading ‘Mobile Development: Easy to use background thread with GUI update’ »
Tags:
Background Thread,
C#,
Compact Framework,
DotNet,
event handler,
GUI thread,
Invoke,
MessageWindow,
Mobile Development,
SendMessage,
WM_COPYDATA,
WndProc,
Worker Thread Category:
CodeProject,
Programming |
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March 18, 2010, 17:43
Here is my approach to make a compact framework form fullscreen:
A class that enables you to
- lock/unlock the taskbar
- hide/show the taskbar and resize form to occupy the whole screen
- hide the menu bar but show/hide SIP
- disables OS to capture Function keys like F6/F7 for Volume Up/Down etc and makes these keys available to be used in your app. Also the use of the WinKey does not open the Start Menu
(You are right, you dont see ‘fullscreen’ in the screen shot, BUT the taskbar is locked!)
Continue reading ‘Full Screen Engine to make Compact Framework applications fullscreen’ »
March 18, 2010, 12:57
(Updated 28. april 2010: see bottom)
If you need to print, show, generate or analyse DataMatrix Barcodes on a Windows Mobile device, you can now use this class library. I have ported the code to be compatible with Compact Framework 2.0 and Visual Studio 2005.
The original full .NET framework source code is located at SourceForge.
Here is first a screenshot of the test application running on a Windows Mobile device using the DataMatrixNetCF class:
Continue reading ‘DataMatrix.Net ported to Compact Framework’ »
March 4, 2010, 15:08
The great site geonames.org offers some webservices. One of these is called timezone and will give you the timezone information for a given geographic Latitude and Longitude. With a GPS enabled Windows Mobile device you can so query the webservice and get timezone informations for the current location.
Unfortunately the webservice does not offer WSDL and so you have to write your own wrapper class. I wrote a small class that does the HttpWebRequest and decodes the xml reponse for easy use in your application.
Continue reading ‘Using ws.geonames.org timezone webservice without WSDL’ »
Tags:
blocking,
class,
Compact Framework,
event,
GPS,
timezone,
timezone-web-service,
windows mobile,
ws.geonames.org,
xml Category:
CodeProject,
Programming |
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