//callback from CopyFileEx, call from back back thread
private CopyFileExCallbackReturns copy_progress_proc(UInt64 TotalFileSize,
UInt64 TotalBytesTransferred,
UInt64 StreamSize,
UInt64 StreamBytesTransferred,
int dwStreamNumber,
CopyFileExState dwCallbackReason,
IntPtr hSourceFile,
IntPtr hDestinationFile,
IntPtr lpData)
{
//early exit if progress dialog absent or begin close
if (progress_dialog == null)
{
return(CopyFileExCallbackReturns.QUIET);
}
if (ProgressCloseBeginSafe)
{
stop();
return(CopyFileExCallbackReturns.CANCEL);
}
var e = new UpdateProgressArgs();
current_file_bytes_transferred = TotalBytesTransferred;
var speed = calc_speed();
if (dwCallbackReason == CopyFileExState.STREAM_SWITCH)
{
//new stream begin copy
//retrieve file names from lpData
var src = string.Empty;
var dst = string.Empty;
IOhelper.strings_from_buffer(ref src, ref dst, lpData);
//set update args
e.DestinationFile = dst;
e.SourceFile = src;
e.Reason = UpdateProgressReason.StreamSwitch;
}
else
{
e.Reason = UpdateProgressReason.ChunkFinish;
}
//set update args
e.KBytesPerSec = speed;
e.StreamSize = StreamSize;
e.StreamTransferred = StreamBytesTransferred;
e.TotalTransferred = total_bytes_transferred + current_file_bytes_transferred;
e.FilesCopied = total_files_copied;
e.EnableTotalProgress =
((options & CopyEngineOptions.CalculateTotalSize) == CopyEngineOptions.CalculateTotalSize);
e.TotalSize = total_source_bytes;
//check progress dialog
if (ProgressCloseBeginSafe)
{
stop();
return(CopyFileExCallbackReturns.CANCEL);
}
//and try invoke
//sync errors may be if progress dialog close before invoking
update_progress_safe(e);
if (ProgressCloseBeginSafe)
{
stop();
return(CopyFileExCallbackReturns.CANCEL);
}
//need try becouse sync error may occur if progress_dialog closed
try
{
if (progress_dialog.CancelPressedSafe)
{
stop();
return(CopyFileExCallbackReturns.CANCEL);
}
else
{
return(CopyFileExCallbackReturns.CONTINUE);
}
}
catch
{
//and if error occur -> stop copy
stop();
return(CopyFileExCallbackReturns.CANCEL);
}
}
//callback from CopyFileEx, call from back back thread
private CopyFileExCallbackReturns move_progress_proc(UInt64 TotalFileSize,
UInt64 TotalBytesTransferred,
UInt64 StreamSize,
UInt64 StreamBytesTransferred,
int dwStreamNumber,
CopyFileExState dwCallbackReason,
IntPtr hSourceFile,
IntPtr hDestinationFile,
IntPtr lpData)
{
if (progress_dialog == null)
{
return(CopyFileExCallbackReturns.QUIET);
}
if (ProgressCloseBeginSafe)
{
return(CopyFileExCallbackReturns.CANCEL);
}
var e = new UpdateProgressArgs();
if (dwCallbackReason == CopyFileExState.STREAM_SWITCH)
{
var src = string.Empty;
var dts = string.Empty;
IOhelper.strings_from_buffer(ref src, ref dts, lpData);
e.SourceFile = src;
e.DestinationFile = dts;
e.Reason = UpdateProgressReason.StreamSwitch;
}
else
{
e.Reason = UpdateProgressReason.ChunkFinish;
}
e.EnableTotalProgress = false;
e.StreamSize = StreamSize;
e.StreamTransferred = StreamBytesTransferred;
update_progress_safe(e);
//need try becouse sync error may occur if progress_dialog closed
try
{
if (progress_dialog.CancelPressedSafe)
{
AbortJobSafe = true;
return(CopyFileExCallbackReturns.CANCEL);
}
else
{
return(CopyFileExCallbackReturns.CONTINUE);
}
}
catch
{
//and if error occur -> stop copy
AbortJobSafe = true;
return(CopyFileExCallbackReturns.CANCEL);
}
}
