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Updated samples to not use sync context as well.

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soukoku
2014-05-14 20:13:29 -04:00
parent ee2cbfa5e4
commit 1cd21f86cb
2 changed files with 56 additions and 40 deletions
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52
Tests/Tester.WPF/ViewModels/TwainVM.cs
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@@ -18,7 +18,7 @@ namespace Tester.WPF
public TwainVM()
: base(TWIdentity.CreateFromAssembly(DataGroups.Image | DataGroups.Audio, Assembly.GetEntryAssembly()))
{
this.SynchronizationContext = SynchronizationContext.Current;
//this.SynchronizationContext = SynchronizationContext.Current;
}
private ImageSource _image;
@@ -41,24 +41,27 @@ namespace Tester.WPF
protected override void OnTransferError(TransferErrorEventArgs e)
{
if (e.Exception != null)
App.Current.Dispatcher.BeginInvoke(new Action(() =>
{
Messenger.Default.Send(new DialogMessage(e.Exception.Message, null)
if (e.Exception != null)
{
Caption = "Transfer Error Exception",
Icon = System.Windows.MessageBoxImage.Error,
Button = System.Windows.MessageBoxButton.OK
});
}
else
{
Messenger.Default.Send(new DialogMessage(string.Format("Return Code: {0}\nCondition Code: {1}", e.ReturnCode, e.SourceStatus.ConditionCode), null)
Messenger.Default.Send(new DialogMessage(e.Exception.Message, null)
{
Caption = "Transfer Error Exception",
Icon = System.Windows.MessageBoxImage.Error,
Button = System.Windows.MessageBoxButton.OK
});
}
else
{
Caption = "Transfer Error",
Icon = System.Windows.MessageBoxImage.Error,
Button = System.Windows.MessageBoxButton.OK
});
}
Messenger.Default.Send(new DialogMessage(string.Format("Return Code: {0}\nCondition Code: {1}", e.ReturnCode, e.SourceStatus.ConditionCode), null)
{
Caption = "Transfer Error",
Icon = System.Windows.MessageBoxImage.Error,
Button = System.Windows.MessageBoxButton.OK
});
}
}));
}
protected override void OnTransferReady(TransferReadyEventArgs e)
@@ -81,14 +84,25 @@ namespace Tester.WPF
protected override void OnDataTransferred(DataTransferredEventArgs e)
{
ImageSource img = null;
if (e.NativeData != IntPtr.Zero)
{
Image = e.NativeData.GetWPFBitmap();
img = e.NativeData.GetWPFBitmap();
}
else if (!string.IsNullOrEmpty(e.FileDataPath))
{
var img = new BitmapImage(new Uri(e.FileDataPath));
Image = img;
img = new BitmapImage(new Uri(e.FileDataPath));
}
if (img != null)
{
if (img.CanFreeze)
{
img.Freeze();
}
App.Current.Dispatcher.BeginInvoke(new Action(() =>
{
Image = img;
}));
}
}

44
Tests/Tester.Winform/TestForm.cs
View File

@@ -58,42 +58,44 @@ namespace Tester.Winform
_twain = new TwainSession(appId);
// either set this and don't worry about threads during events,
// or don't and invoke during the events yourself
_twain.SynchronizationContext = SynchronizationContext.Current;
//_twain.SynchronizationContext = SynchronizationContext.Current;
_twain.StateChanged += (s, e) =>
{
Debug.WriteLine("State changed to " + _twain.State + " on thread " + Thread.CurrentThread.ManagedThreadId);
};
_twain.DataTransferred += (s, e) =>
{
//this.Invoke(new Action(() =>
//{
if (pictureBox1.Image != null)
{
pictureBox1.Image.Dispose();
pictureBox1.Image = null;
}
Bitmap img = null;
if (e.NativeData != IntPtr.Zero)
{
var img = e.NativeData.GetDrawingBitmap();
if (img != null)
pictureBox1.Image = img;
img = e.NativeData.GetDrawingBitmap();
}
else if (!string.IsNullOrEmpty(e.FileDataPath))
{
var img = new Bitmap(e.FileDataPath);
pictureBox1.Image = img;
img = new Bitmap(e.FileDataPath);
}
if (img != null)
{
this.BeginInvoke(new Action(() =>
{
if (pictureBox1.Image != null)
{
pictureBox1.Image.Dispose();
pictureBox1.Image = null;
}
pictureBox1.Image = img;
}));
}
//}));
};
_twain.SourceDisabled += (s, e) =>
{
//this.Invoke(new Action(() =>
//{
btnStopScan.Enabled = false;
btnStartCapture.Enabled = true;
panelOptions.Enabled = true;
LoadSourceCaps();
//}));
this.BeginInvoke(new Action(() =>
{
btnStopScan.Enabled = false;
btnStartCapture.Enabled = true;
panelOptions.Enabled = true;
LoadSourceCaps();
}));
};
_twain.TransferReady += (s, e) =>
{