VintaSoft Twain .NET SDK Discussions

Hello Vintasoft-team,

i've recognized a problem with the scan driver dialogs. I've set the properties "ShowUI" and "ModalUI" of the Vintasoft.Twain.Device to true, but i still can switch between the scan driver UI and the main application windows.

Example code:

            
            bool bFinished = false;
            Vintasoft.Twain.Device deTest = null;
            Vintasoft.Twain.AcquireModalState amsTest;

            this.dmTest.Open();

            deTest = this.dmTest.DefaultDevice;

            deTest.ShowUI = true;
            deTest.ModalUI = true;
            deTest.ShowIndicators = false;
            deTest.DisableAfterAcquire = false;

            deTest.TransferMode = Vintasoft.Twain.TransferMode.Native;

            deTest.Open();

            deTest.XferCount = -1;
            deTest.DocumentFeeder.Enabled = true;

            // modal acquiring loop
            do
            {
                amsTest = deTest.AcquireModal();

                switch (amsTest)
                {
                    case Vintasoft.Twain.AcquireModalState.ImageAcquired:
                        if (this.pictureBox1.Image != null)
                            this.pictureBox1.Image.Dispose();

                        this.pictureBox1.Image = deTest.AcquiredImage.GetAsBitmap(true);

                        deTest.AcquiredImage.Dispose();

                        break;
                    case Vintasoft.Twain.AcquireModalState.ScanCanceled:
                    case Vintasoft.Twain.AcquireModalState.ScanCompleted:
                    case Vintasoft.Twain.AcquireModalState.ScanFailed:
                    case Vintasoft.Twain.AcquireModalState.UserInterfaceClosed:
                        bFinished = true;
                        break;
                }
            }
            while (!bFinished);

            deTest.Close();

            this.dmTest.Close();

The underlying Vintasoft.Twain.DeviceManager is created with the main application window as parameter in the constructor.

Is this perhaps a known behaviour? Or do i have to call some other method/property to force the twain driver window to be shown as a modal dialog?

Thank you.

Best regards
Daniel