// 非同期処理ボタンメソッドAsyncButton.
public void AsyncButton()
{
// RunningDelegateの生成.
RunningDelegate running = new RunningDelegate(Running); // runningの生成.
IAsyncResult iar1 = button1.BeginInvoke(running); // button1.BeginInvokeでrunningが持つメソッドに委譲.
button1.EndInvoke(iar1); // button1.EndInvokeで完了.
// 10秒待つ.(擬似的な重たい処理.)
Thread.Sleep(10000); // Thread.Sleepで10秒休止.
// FinishDelegateの生成.
FinishDelegate finish = new FinishDelegate(Finish); // finishの生成.
IAsyncResult iar2 = button1.BeginInvoke(finish); // button1.BeginInvokeでfinishが持つメソッドに委譲.
button1.EndInvoke(iar2); // button1.EndInvokeで完了.
}
public void SaveAvi(string input_wav_filename, string output_avi_filename, double start_time, double end_time,
int dest_width, int dest_height, bool is_compress, RunningDelegate dlg)
{
int f_rate = frame_rate_ / 256;
VfwAviWriter avi_writer = new VfwAviWriter(output_avi_filename, frame_rate_ / 256, 1);
bool is_success = false;
try
{
int start_frame = (start_time >= 0.0 ? (int)(start_time * f_rate) : 0);
int end_frame = (end_time >= 0.0 ? (int)(Math.Ceiling(end_time * f_rate)) : frame_count_) - 1;
if (end_frame >= frame_count_)
{
end_frame = frame_count_ - 1;
}
for (int i = start_frame; i <= end_frame; ++i)
{
Bitmap bitmap = GetFrame(i, dest_width, dest_height);
avi_writer.AddFrame(bitmap);
bitmap.Dispose();
}
if (input_wav_filename != "")
{
avi_writer.AddWave(input_wav_filename);
}
is_success = true;
}
finally
{
avi_writer.Close();
if (!is_success)
{
if (File.Exists(output_avi_filename))
{
try
{
File.Delete(output_avi_filename);
}
catch (Exception) { }
}
}
}
}
