static Exception GenerateInstallFailureException()
{
var errorCode = Marshal.GetLastWin32Error();
var existingOwner = ClipboardApi.GetClipboardOwner();
var ownerTitle = WindowApi.GetWindowTitle(existingOwner);
return(new InvalidOperationException($"Could not install a clipboard hook for the main window. The window '{ownerTitle}' currently owns the clipboard. The last error code was {errorCode}."));
}
public IDataSource GetDataSource()
{
var activeWindowHandle = WindowApi.GetForegroundWindow();
var windowTitle = WindowApi.GetWindowTitle(activeWindowHandle);
var windowIcon = GetWindowIcon(activeWindowHandle);
var iconBytes = imagePersistenceService.ConvertBitmapSourceToByteArray(windowIcon);
return(new DataSource(iconBytes, windowTitle));
}
public void Start()
{
_cancellationTokenSource = new CancellationTokenSource();
CancellationToken token = _cancellationTokenSource.Token;
Task listener = Task.Factory.StartNew(() =>
{
while (true)
{
IntPtr newFocusedWindowHandle = WindowApi.GetForegroundWindow();
string newFocusedWindowTitle = WindowApi.GetWindowTitle(newFocusedWindowHandle);
//Only trigger event & update when focused window title is different
if (newFocusedWindowTitle != null && newFocusedWindowTitle != FocusedWindowInfo?.Title)
{
int threadId = WindowApi.GetWindowProcessId(newFocusedWindowHandle, out int processId);
WindowInfo newFocusedWindowInfo = new WindowInfo()
{
Title = newFocusedWindowTitle,
Handle = newFocusedWindowHandle,
ProcessId = processId,
ThreadId = threadId
};
FocusedWindowTitleChanged?.Invoke(this, new FocusedWindowTitleChangedEventArgs()
{
OldFocusedWindow = FocusedWindowInfo,
NewFocusedWindow = newFocusedWindowInfo
});
FocusedWindowInfo = newFocusedWindowInfo;
}
Thread.Sleep(PollDelayMilliseconds);
if (token.IsCancellationRequested)
{
break;
}
}
}, token, TaskCreationOptions.LongRunning, TaskScheduler.Default);
}
