/// <summary>
/// Gets an instance of <see cref="WindowProcess"/> form process cache or creates a new one. A new one will be added to the cache.
/// </summary>
/// <param name="hWindow">The handle to the window</param>
/// <returns>A new Instance of type <see cref="WindowProcess"/></returns>
private static WindowProcess CreateWindowProcessInstance(IntPtr hWindow)
{
lock (_handlesToProcessCache)
{
if (_handlesToProcessCache.Count > 7000)
{
Debug.Print("Clearing Process Cache because it's size is " + _handlesToProcessCache.Count);
_handlesToProcessCache.Clear();
}
// Add window's process to cache if missing
if (!_handlesToProcessCache.ContainsKey(hWindow))
{
// Get process ID and name
var processId = WindowProcess.GetProcessIDFromWindowHandle(hWindow);
var threadId = WindowProcess.GetThreadIDFromWindowHandle(hWindow);
var processName = WindowProcess.GetProcessNameFromProcessID(processId);
if (processName.Length != 0)
{
_handlesToProcessCache.Add(hWindow, new WindowProcess(processId, threadId, processName));
}
else
{
// For the dwm process we can not receive the name. This is no problem because the window isn't part of result list.
Log.Debug($"Invalid process {processId} ({processName}) for window handle {hWindow}.", typeof(Window));
_handlesToProcessCache.Add(hWindow, new WindowProcess(0, 0, string.Empty));
}
}
// Correct the process data if the window belongs to a uwp app hosted by 'ApplicationFrameHost.exe'
// (This only works if the window isn't minimized. For minimized windows the required child window isn't assigned.)
if (_handlesToProcessCache[hWindow].Name.ToUpperInvariant() == "APPLICATIONFRAMEHOST.EXE")
{
new Task(() =>
{
NativeMethods.CallBackPtr callbackptr = new NativeMethods.CallBackPtr((IntPtr hwnd, IntPtr lParam) =>
{
// Every uwp app main window has at least three child windows. Only the one we are interested in has a class starting with "Windows.UI.Core." and is assigned to the real app process.
// (The other ones have a class name that begins with the string "ApplicationFrame".)
if (GetWindowClassName(hwnd).StartsWith("Windows.UI.Core.", StringComparison.OrdinalIgnoreCase))
{
var childProcessId = WindowProcess.GetProcessIDFromWindowHandle(hwnd);
var childThreadId = WindowProcess.GetThreadIDFromWindowHandle(hwnd);
var childProcessName = WindowProcess.GetProcessNameFromProcessID(childProcessId);
// Update process info in cache
_handlesToProcessCache[hWindow].UpdateProcessInfo(childProcessId, childThreadId, childProcessName);
return(false);
}
else
{
return(true);
}
});
_ = NativeMethods.EnumChildWindows(hWindow, callbackptr, 0);
}).Start();
}
return(_handlesToProcessCache[hWindow]);
}
}
/// <summary>
/// Updates the list of open windows
/// </summary>
public void UpdateOpenWindowsList()
{
windows.Clear();
NativeMethods.CallBackPtr callbackptr = new NativeMethods.CallBackPtr(WindowEnumerationCallBack);
_ = NativeMethods.EnumWindows(callbackptr, 0);
}
private void RefreshButtonClick(object sender, EventArgs e) {
_handleList.Clear();
windowList.Items.Clear();
_callBackPtr = ListWindows;
NativeMethods.EnumWindows(_callBackPtr, (IntPtr) 0);
windowList.SelectedIndex = 0;
}
