Create the picture box var pictureBox = new PictureBox Create the description var descriptionLabel = new Label Go through each icon, keep track of y pos int yPos = 12 SharpPreviewHandler is the base class for Preview Handler Shell Extensions. The now that we've set up the project, we can derive the IconPreviewHandler class from SharpPreviewHandler. Step 3: Deriving from SharpPreviewHandler If you have Nuget installed, just do a quick search for SharpShell and install it directly - or get the package details at. Tip: The download on this article is correct at the time of writing - if you need the latest version, use Nuget (as described below) or get the library from. You can do that in a few different ways: Add ReferenceÄownload the 'SharpShell Core Library' zip file at the top of the article and add a reference to the SharpShell.dll file. We now need to add a reference to the core SharpShell library. Tip: If you use Nuget to install SharpShell (see 'Step 2'), you don't need to add these references - they'll be added automatically. These references contain various useful bits and pieces that other parts of the SharpShell library will need, such as icons and context menus. Rename the ' Class1.cs' file to ' IconPreviewHandler.cs'. In this example, we'll call the project ' IconPreviewHandler'. Tip: You can use Visual Basic rather than C# - in this article, the source code is C# but the method for creating a Visual Basic Shell Extension is just the same. Step 1: Creating the Projectįirst, create a new C# Class Library project. Let's get started creating the Icon Preview Handler. So with SharpShell, the plumbing is done for you, leaving you with the task of actually creating the UI and logic you want. However, writing all of the COM plumbing requires a lot of work with pinvoke, the smallest mistake will cause exceptions to be thrown in explorer and generally be a hassle. This is a pretty easy process to hook into, Preview Handlers are well documented. Tell the object to render a preview, supplied file details (either the path, stream of the file or IShellItem).Tell that object what the parent window is, what its size is, etc.Instantiate the object that implements IPreviewHandler.If there is, create an instance of the prevhost process and load the preview handler DLL into it.Check the registry to see if there's a preview handler for the file type.Essentially, what the system does when you select a file in Explorer and have the preview handler open is: Ever since adding support for them to my SharpShell library, I've kept the preview pane open and been surprised by how useful they can be. NET Shell Extensions - Shell Property Sheets NET Shell Extensions - Shell Thumbnail Handlers NET Shell Extensions - Shell Icon Overlay Handlers NET Shell Extensions - Shell Preview Handlers NET Shell Extensions - Shell Drop Handlers NET Shell Extensions - Shell Info Tip Handlers NET Shell Extensions - Shell Icon Handlers NET Shell Extensions - Shell Context Menus This article is part of the series '.NET Shell Extensions', which includes: When an icon is selected, and the preview pane is open, the Icon Preview Handler extension shows each of the different icon images in the file. Above: A folder full of icons on my machine.
0 Comments
Leave a Reply. |