Windows 7 - Taskbar - Pin or Unpin Program Links

Question

As in title, is there any Win32 API to do that?

Answer 1

You can pin/unpin apps via Windows Shell verbs:
http://blogs.technet.com/deploymentguys/archive/2009/04/08/pin-items-to-the-start-menu-or-windows-7-taskbar-via-script.aspx

For API, there is a script-friendly COM library for working with the Shell:
http://msdn.microsoft.com/en-us/library/bb776890%28VS.85%29.aspx

Here is an example written in JScript:

// Warning: untested and probably needs correction
var appFolder = "FOLDER CONTAINING THE APP/SHORTCUT";
var appToPin = "FILENAME OF APP/SHORTCUT";
var shell = new ActiveXObject("Shell.Application");
var folder = shell.NameSpace(appFolder);
var folderItem = folder.ParseName(appToPin);
var itemVerbs = folderItem.Verbs;
for(var i = 0; i < itemVerbs.Count; i++)
{
    // You have to find the verb by name,
    //  so if you want to support multiple cultures,
    //  you have to match against the verb text for each culture.
    if(itemVerbs[i].name.Replace(/&/, "") == "Pin to Start Menu")
    {
        itemVerbs[i].DoIt();
    }
}