void ProgressBox_FormClosing(object sender, FormClosingEventArgs e)
{
// closing the window implies cancellation
if (worker.IsBusy)
{
targetBitmap = null;
worker.CancelAsync();
GC.Collect();
}
}
public ImporterOptimised(Bitmap bitmap)
{
worker.WorkerReportsProgress = true;
worker.DoWork += Worker_DoWork;
worker.ProgressChanged += Worker_ProgressChanged;
worker.RunWorkerCompleted += Worker_Completed;
worker.WorkerSupportsCancellation = true;
sourceBitmap = bitmap;
targetBitmap = new CharBitmap(bitmap.Width, bitmap.Height);
progressBox.Text = "Importing bitmap...";
progressBox.Value = 0;
progressBox.FormClosing += ProgressBox_FormClosing;
}