Analysis-Services/AlmToolkit/BismNormalizer/TabularCompare/DesktopInstances/WindowTitle.cs
2023-09-28 08:08:39 -07:00

163 lines
4.9 KiB
C#

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
//namespace DaxStudio.Common
namespace BismNormalizer.TabularCompare.UI.DesktopInstances
{
public class WindowTitle
{
//static void Main(string[] args)
//{
// var p = Process.GetProcessById(3484);
// var h = p.MainWindowHandle;
// string s = GetWindowTextTimeout(h, 100 /*msec*/);
//}
#region PInvoke calls to get the window title of a minimize window
delegate bool EnumThreadDelegate(IntPtr hWnd, IntPtr lParam);
[DllImport("user32.dll")]
static extern bool IsWindowVisible(IntPtr hWnd);
[DllImport("user32.dll")]
static extern bool EnumThreadWindows(int dwThreadId, EnumThreadDelegate lpfn,
IntPtr lParam);
//[DllImport("User32.dll", SetLastError = true)]
//public unsafe static extern int SendMessageTimeout(
// IntPtr hWnd,
// uint uMsg,
// uint wParam,
// StringBuilder lParam,
// uint fuFlags,
// uint uTimeout,
// void* lpdwResult);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
static extern IntPtr SendMessage(IntPtr hWnd, uint Msg, int wParam,
StringBuilder lParam);
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
static extern int GetWindowTextLength(IntPtr hWnd);
[DllImport("User32.dll", SetLastError = true, CharSet = CharSet.Auto)]
static extern long GetWindowText(IntPtr hwnd, StringBuilder lpString, long cch);
const int WM_GETTEXT = 0x000D;
const int WM_GETTEXTLENGTH = 0x000E;
#endregion
private static IEnumerable<IntPtr> EnumerateProcessWindowHandles(int processId)
{
var handles = new List<IntPtr>();
foreach (ProcessThread thread in Process.GetProcessById(processId).Threads)
EnumThreadWindows(thread.Id,
(hWnd, lParam) => { handles.Add(hWnd); return true; }, IntPtr.Zero);
return handles;
}
public static string GetWindowTitle(int procId)
{
foreach (var handle in EnumerateProcessWindowHandles(procId))
{
StringBuilder message = new StringBuilder(1000);
if (IsWindowVisible(handle))
{
//SendMessage(handle, WM_GETTEXT, message.Capacity, message);
//if (message.Length > 0) return message.ToString();
return GetCaptionOfWindow(handle);
}
}
return "";
}
/* ====================================== */
//public static string GetWindowTitleTimeout(int procId, uint timeout)
//{
// string title = "";
// foreach (var handle in EnumerateProcessWindowHandles(procId))
// {
// try
// {
// // if there is an issue with the window handle we just
// // ignore it and skip to the next one in the collection
// title = GetWindowTextTimeout(handle, timeout);
// }
// catch
// {
// title = "";
// }
// if (title.Length > 0) return title;
// }
// return title;
//}
//private static unsafe string GetWindowTextTimeout(IntPtr hWnd, uint timeout)
//{
// int length;
// if (SendMessageTimeout(hWnd, WM_GETTEXTLENGTH, 0, null, 2, timeout, &length) == 0)
// {
// return null;
// }
// if (length == 0)
// {
// return null;
// }
// StringBuilder sb = new StringBuilder(length + 1); // leave room for null-terminator
// if (SendMessageTimeout(hWnd, WM_GETTEXT, (uint)sb.Capacity, sb, 2, timeout, null) == 0)
// {
// return null;
// }
// return sb.ToString();
//}
private static string GetCaptionOfWindow(IntPtr hwnd)
{
string caption = "";
StringBuilder windowText = null;
try
{
int max_length = GetWindowTextLength(hwnd);
windowText = new StringBuilder("", max_length + 5);
GetWindowText(hwnd, windowText, max_length + 2);
if (!String.IsNullOrEmpty(windowText.ToString()) && !String.IsNullOrWhiteSpace(windowText.ToString()))
caption = windowText.ToString();
}
catch (Exception ex)
{
caption = ex.Message;
}
finally
{
windowText = null;
}
return caption;
}
}
}