Refresh and DISPID_DOCUMENTCOMPLETE. Browser Helper Objects: The Browser the Way You Want It. As of December 2011, this topic has been archived. As a result, it is no longer actively maintained. For more information, see Archived Content. For information, recommendations, and guidance regarding the current version of Internet Explorer, see IE Developer Center. Dino Esposito Microsoft Corporation January 1999 Summary: Describes how to use BHOs to customize your browser. (16 printed pages) Covers: Introduction There are sometimes circumstances in which you need a more or less specialized version of the browser. Program Customization Historically speaking, the first way to customize the behavior of a program was through subclassing. With the advent of the Microsoft Win32 API, interprocess subclassing was discouraged and made a bit harder to code.
In the latter case, the programs search for additional modules in well-known and prefixed disk zones, load, initialize, and then leave them free to do the job they have been designed to do. What Are Browser Helper Objects? Figure 1. Table 1. Programatically activating a Deskband under Windows XP. Here are some hints for tracking this down: You're looking for the IBandSite interface for the taskbar. Many of the shell's windows contain a pointer to their associated COM object at GetWindowLong(hwnd, 0) or GetWindowLong (hwnd, GWL_USER) This value is an LPUNKNOWN - but it's only valid for the process/thread to which the window belongs.
You can enumerate all windows and look for one with the "Shell_TrayWnd" class. That's the taskbar's main window. You can get its thread using GetWindowThreadProcessId and then use SetWindowsHookEx to set a WH_GETMESSAGE hook on that thread (the hook will have to be in a DLL to work). Send a registered message to the taskbar window and check for that message in your hook procedure.
I don't know for sure what kind of COM object is associated with the taskbar and whether or not it exposes the IBandSite interface, but at least this might get you in the right direction. How does the Google Desktop deskband get enabled on install on W. CodeProject: Extending Explorer with Band Objects using .NET and. Download source files - 118 Kb Introduction A lot has been already said about extending Windows and Internet Explorer with Band Objects, Browser Bands, Toolbar Bands and Communication Bands.
So if you are familiar with COM and ATL you even might have implemented one yourself. Well, in case your were waiting for an easy way to impress your friends with something like Google Toolbar here it is - the .NET way (or should I say Windows Forms and COM Interop way?). In this tutorial I am going to show how to create any of the mentioned above Band Object types with the help of the BandObject control. Hello World Bar step by step Build a Release version of BandObjectLib and register it in the Global Assembly Cache. As you probably already know, Band Objects are COM components.
Assemblies in the GAC must have strong names and thus key pairs are required. Create a new Windows Control Library project and call it SampleBars. Using BandObjectLib; using System.Runtime.InteropServices; cd $(ProjectDir).. CodeProject: Extending Explorer with Band Objects using .NET and. Download source files - 118 Kb Introduction A lot has been already said about extending Windows and Internet Explorer with Band Objects, Browser Bands, Toolbar Bands and Communication Bands. So if you are familiar with COM and ATL you even might have implemented one yourself.
Well, in case your were waiting for an easy way to impress your friends with something like Google Toolbar here it is - the .NET way (or should I say Windows Forms and COM Interop way?). In this tutorial I am going to show how to create any of the mentioned above Band Object types with the help of the BandObject control. Later I will also talk about some implementation details of the BandObject.
Hello World Bar step by step Build a Release version of BandObjectLib and register it in the Global Assembly Cache. As you probably already know, Band Objects are COM components. Assemblies in the GAC must have strong names and thus key pairs are required. Create a new Windows Control Library project and call it SampleBars. How to programmatically activate a band object. The only supported way to programmatically show and hide a band object (such as an Explorer Bar, CommBand, or ToolBand) in Internet Explorer is to use the IWebBrowser2::ShowBrowserBar method.
In many cases, developers of band objects want to be able to automatically display their band object when the user starts a new instance of Internet Explorer. The best way to achieve this functionality is to use a Browser Helper Object (BHO) in conjunction with the band object. In this way, the BHO can decide whether or not to programmatically activate the band object based on registry keys or other settings persisted by the band object itself. To build a minimal BHO that can programmatically activate a band object (the Search bar, in this example), you can create a new ATL/COM AppWizard project and add a new Internet Explorer object. Then, override IObjectWithSite::SetSite to achieve the desired functionality. The new SetSite implementation should look as follows: Applies to. Deskbands (again) - microsoft.public.platformsdk.shell | Google. The Old New Thing : How do I programmatically show and hide the. The Old New Thing : Do not write in-process shell extensions in. Originally, the CLR team specifically denied any claim that future versions of the CLR would be backwards compatible.
Instead, IIRC, they claimed that all versions of the CLR would work side-by-side. Now, this solution isn't perfect, and nobody wants 10 versions of the CLR installed, but it seems like it was probably the best solution for 1.0, 1.1, and 2.0, as .NET is changing very quickly and compatibility issues are certainly going to be a problem. Even so, strong backwards compatibility was an important goal for 1.1 and 2.0.
Neither one has perfect back-compat, but they're not terribly bad, either. Of course, it only takes one back-compat issue to make YOUR app (the most important app in the world) not work. For now, it isn't terribly outrageous to have 1.0, 1.1, and 2.0 installed, allowing you to bypass most back-compat issues (assuming nobody does something silly like load two different .NET DLLs with different requirements into the same process). Seamless activation of a gui window in a computing environment i.