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Selected File to UNC Path

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Selected File to UNC Path

Description	Select a file and get the full UNC path for it.
Language	C#
Minimum Version	9.1+
Created By	Thomas Malloch (BFS)
Contributors	Manuel R.
Date Created	Feb 23, 2018
Date Last Modified	Aug 13, 2018

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using System;
using System.Drawing;
using System.Windows.Forms;
using System.Text;
using System.Runtime.InteropServices;
using System.Collections.Specialized;
using System.IO;
using System.Text.RegularExpressions;

// The 'windowHandle' parameter will contain the window handle for the:
//   - Active window when run by hotkey
//   - Trigger target when run by a Trigger rule
//   - TitleBar Button owner when run by a TitleBar Button
//   - Jump List owner when run from a Taskbar Jump List
//   - Currently focused window if none of these match
public static class DisplayFusionFunction
{
    [DllImport("mpr.dll", CharSet = CharSet.Unicode, SetLastError = true)]
    private static extern int WNetGetConnection([MarshalAs(UnmanagedType.LPTStr)] string localName, [MarshalAs(UnmanagedType.LPTStr)] StringBuilder remoteName, ref int length);
    [DllImport("user32.dll")] 
    private static extern int GetWindowText(int hWnd, StringBuilder text, int count); 
    [DllImport("user32.dll")] 
    private static extern int GetWindowTextLength(IntPtr hWnd); 
	[DllImport("user32.dll", PreserveSig = true, SetLastError = false, CharSet = CharSet.Unicode)]
	private static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, IntPtr lpszWindow );
    [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
    private static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, int wParam, StringBuilder lParam);	
    const int WM_GETTEXT = 13;
       
	public static void Run(IntPtr windowHandle)
	{
        //save clipboard to restore later
	    string oldClip = BFS.Clipboard.GetText();
        //copy the selected file to the clipboard
		BFS.Clipboard.Copy();
		
		//get the filename of the first file from the clipboard
		StringCollection files = Clipboard.GetFileDropList();
		string originalPath;
		
		if (files == null || files.Count == 0)
		{		
            // Retrieve handle of the Address bar according to class hierarchy
            IntPtr controlHandle;
            controlHandle = FindWindowEx(windowHandle, IntPtr.Zero, "WorkerW", IntPtr.Zero);
            controlHandle = FindWindowEx(controlHandle, IntPtr.Zero, "ReBarWindow32", IntPtr.Zero);
            controlHandle = FindWindowEx(controlHandle, IntPtr.Zero, "Address Band Root", IntPtr.Zero);
            controlHandle = FindWindowEx(controlHandle, IntPtr.Zero, "msctls_progress32", IntPtr.Zero);
            controlHandle = FindWindowEx(controlHandle, IntPtr.Zero, "Breadcrumb Parent", IntPtr.Zero);
            controlHandle = FindWindowEx(controlHandle, IntPtr.Zero, "ToolbarWindow32", IntPtr.Zero);
            
            StringBuilder builder = new StringBuilder(500);
            SendMessage(controlHandle, WM_GETTEXT, builder.Capacity, builder);
            originalPath = builder.ToString().Remove(0, builder.ToString().IndexOf(' ') + 1);
            //BFS.Dialog.ShowTrayMessage(originalPath);
        }
        else 
        {
            originalPath = files[0];
        }
        // restore clipboard to its initial state
		BFS.Clipboard.SetText(oldClip);
		
        string uncPath;
        
        //see if the path matches "[letter]:\"
        //if it doesnt, return what was on the clipboard
        if (!Regex.IsMatch(originalPath, "^[a-zA-Z]:"))
        {
            uncPath = originalPath;
        }
        else
        {
            //set up variables for the WNetGetConnection function
            StringBuilder sb = new StringBuilder(512);
            int size = sb.Capacity;
        
            //try and get the full path with the WNetGetConnection. if it fails, return what was on the clipboard
            int hr = WNetGetConnection(originalPath.Substring(0, 2), sb, ref size);
            if (hr != 0)
            {
                uncPath = originalPath;
            }
            else
            {
                //build full path
                DirectoryInfo dir = new DirectoryInfo(originalPath);
                string path = Path.GetFullPath(originalPath).Substring(Path.GetPathRoot(originalPath).Length);
            
                //set the clipboard with the full path
                uncPath = Path.Combine(sb.ToString().TrimEnd(), path);
            }
        }
        BFS.Clipboard.SetText(uncPath);
        //BFS.Dialog.ShowTrayMessage(uncPath);
	}
}

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