/// <summary>
/// Determines if a process has a window.
/// </summary>
/// <param name="process">The process to check.</param>
/// <returns>A value indicating whether or not the given process has a window.</returns>
public static Boolean IsProcessWindowed(Process process)
{
if (WindowsProcessInfo.WindowedProcessCache.Contains(process.Id))
{
return(true);
}
if (WindowsProcessInfo.NoWindowProcessCache.Contains(process.Id))
{
return(false);
}
// Check if the window handle is set
if (process.MainWindowHandle != IntPtr.Zero)
{
WindowsProcessInfo.WindowedProcessCache.Add(process.Id);
return(true);
}
// Ignore system processes
if (WindowsProcessInfo.IsProcessSystemProcess(process))
{
WindowsProcessInfo.NoWindowProcessCache.Add(process.Id);
return(false);
}
// Window handle was not set, so to be certain we must enumerate the process threads, looking for window threads
foreach (ProcessThread threadInfo in process.Threads)
{
if (NativeMethods.EnumWindows((IntPtr hWnd, Int32 lParam) =>
{
if (NativeMethods.GetWindowThreadProcessId(hWnd, out _) == lParam)
{
if (NativeMethods.IsWindowVisible(hWnd))
{
WindowsProcessInfo.WindowedProcessCache.Add(process.Id);
return(true);
}
}
return(false);
}, threadInfo.Id))
{
return(true);
}
}
WindowsProcessInfo.NoWindowProcessCache.Add(process.Id);
return(false);
}
/// <summary>
/// Determines if a process has a window.
/// </summary>
/// <param name="process">The process to check.</param>
/// <returns>A value indicating whether or not the given process has a window.</returns>
public static Boolean IsProcessWindowed(Process process)
{
if (WindowsProcessInfo.WindowedProcessCache.Contains(process.Id))
{
return(true);
}
if (WindowsProcessInfo.NoWindowProcessCache.Contains(process.Id))
{
return(false);
}
// Check if the window handle is set
if (process.MainWindowHandle != IntPtr.Zero)
{
WindowsProcessInfo.WindowedProcessCache.Add(process.Id);
return(true);
}
// Ignore system processes
if (WindowsProcessInfo.IsProcessSystemProcess(process))
{
WindowsProcessInfo.NoWindowProcessCache.Add(process.Id);
return(false);
}
// Window handle was not set, so to be certain we must enumerate the process threads, looking for window threads
foreach (ProcessThread threadInfo in process.Threads)
{
IntPtr[] windows = WindowsProcessInfo.GetWindowHandlesForThread(threadInfo.Id);
if (windows != null)
{
foreach (IntPtr handle in windows)
{
if (NativeMethods.IsWindowVisible(handle))
{
WindowsProcessInfo.WindowedProcessCache.Add(process.Id);
return(true);
}
}
}
}
WindowsProcessInfo.NoWindowProcessCache.Add(process.Id);
return(false);
}
/// <summary>
/// Fetches the icon associated with the provided process.
/// </summary>
/// <param name="process">The process to check.</param>
/// <returns>An Icon associated with the given process. Returns null if there is no icon.</returns>
public static Icon GetIcon(Process process)
{
Icon icon = null;
if (WindowsProcessInfo.NoIconProcessCache.Contains(process.Id))
{
return(WindowsProcessInfo.NoIcon);
}
if (WindowsProcessInfo.IconCache.TryGetValue(process.Id, out icon))
{
return(icon);
}
if (WindowsProcessInfo.IsProcessSystemProcess(process))
{
WindowsProcessInfo.NoIconProcessCache.Add(process.Id);
return(WindowsProcessInfo.NoIcon);
}
try
{
IntPtr iconHandle = NativeMethods.ExtractIcon(process.Handle, process.MainModule.FileName, 0);
if (iconHandle == IntPtr.Zero)
{
WindowsProcessInfo.NoIconProcessCache.Add(process.Id);
return(WindowsProcessInfo.NoIcon);
}
icon = Icon.FromHandle(iconHandle);
WindowsProcessInfo.IconCache.Add(process.Id, icon);
return(icon);
}
catch
{
WindowsProcessInfo.NoIconProcessCache.Add(process.Id);
return(WindowsProcessInfo.NoIcon);
}
}