Blog Articles and information on C# and .NET development topics
ImageBox control is already a versatile little control and I use it for all sorts of tasks. One of the features I recently wanted was to allow users to be able to select a source region, then adjust this as needed. The control already allows you to draw a selection region, but if you need to adjust that ... well, you can't. You can only draw a new region.
This article describes how to extend the
ImageBox to include the ability to resize the selection region. A older demonstration which shows how to drag the selection around has also been incorporated, in a more tidy fashion than the demo.
The second in a two part series that describes how to load and save Adobe Photoshop colour swatch files using C#. This second article provides a full example project that will write RGB and HSL based swatch files.Read More
The first of a two part series which describes how to load and ultimately save Adobe Photoshop colour swatch files using C#. This first article describes the file format, and provides a full example project that will read RGB based swatch files.Read More
I took a break from arguing with our GIF decoder to take a quick look at the BBM format as I have a few files in that format containing colour palettes I wished to extract. When I looked into this, I found a BBM file is essentially an LBM file without any image data, so I set to work at writing a new palette serializer for reading and writing the palette files. This article describes how to read the palettes from BBM and LBM files.Read More
I recently had a requirement where a user was able to perform an action externally to my application, and my application then had to detect this for processing.
I could of course just had a poller running away in the background to check, but as the requirement also needed user input, why not just wait until the user switched back to my application, then check and deal with accordingly?
This article describes how to intercept the
WM_ACTIVATEAPP message from your C# application and put it to good use.
An article which describes how to add validation support to a
TreeView control that is using custom label edit functionality.
An article which describes a robust yet simple way to have custom text when using the
LabelEdit functionality of a
TreeView and working around the limitations of Windows Forms using C# along with the