/// <summary>
/// Handle an image. a_bitmap is passed by reference so that this function can
/// dispose and null it out to gain access to the file that's backing it. The
/// calling toolkit function will never perform any action with a_bitmap after
/// this function returns.
/// </summary>
/// <param name="a_szDg">Data group that preceeded this call</param>
/// <param name="a_szDat">Data argument type that preceeded this call</param>
/// <param name="a_szMsg">Message that preceeded this call</param>
/// <param name="a_sts">Current status</param>
/// <param name="a_bitmap">C# bitmap of the image</param>
/// <param name="a_szFile">File name, if doing a file transfer</param>
/// <param name="a_szTwimageinfo">data collected for us</param>
/// <param name="a_abImage">a byte array of the image</param>
/// <param name="a_iImageOffset">byte offset where the image data begins</param>
private TWAINCSToolkit.MSG ReportImage
(
string a_szTag,
string a_szDg,
string a_szDat,
string a_szMsg,
TWAIN.STS a_sts,
Bitmap a_bitmap,
string a_szFile,
string a_szTwimageinfo,
byte[] a_abImage,
int a_iImageOffset
)
{
// We're leaving...
if (m_graphics1 == null)
{
return(TWAINCSToolkit.MSG.RESET);
}
// Let us be called from any thread...
if (this.InvokeRequired)
{
// We need a copy of the bitmap, because we're not going to wait
// for the thread to return. Be careful when using EndInvoke.
// It's possible to create a deadlock situation with the Stop
// button press.
BeginInvoke(new MethodInvoker(delegate() { ReportImage(a_szTag, a_szDg, a_szDat, a_szMsg, a_sts, a_bitmap, a_szFile, a_szTwimageinfo, a_abImage, a_iImageOffset); }));
return(TWAINCSToolkit.MSG.ENDXFER);
}
// We're processing end of scan...
if (a_bitmap == null)
{
// Report errors, but only if the driver's indicators have
// been turned off, otherwise we'll hit the user with multiple
// dialogs for the same error...
if (!m_blIndicators && (a_sts != TWAIN.STS.SUCCESS))
{
MessageBox.Show("End of session status: " + a_sts);
}
// Get ready for the next scan...
SetButtons(EBUTTONSTATE.OPEN);
return(TWAINCSToolkit.MSG.ENDXFER);
}
// Display the image...
if (m_iUseBitmap == 0)
{
m_iUseBitmap = 1;
LoadImage(ref m_pictureboxImage1, ref m_graphics1, ref m_bitmapGraphic1, a_bitmap);
}
// All done...
return(TWAINCSToolkit.MSG.ENDXFER);
}
/// <summary>
/// 获取当前传输模式
/// </summary>
/// <returns></returns>
private string GetTwainTransferMode()
{
string szTwmemref = "ICAP_XFERMECH";
string szStatus = "";
TWAIN.STS sts = m_twaincstoolkit.Send("DG_CONTROL", "DAT_CAPABILITY", "MSG_GETCURRENT", ref szTwmemref, ref szStatus);
string[] pros = (szTwmemref + ",,,,").Split(',');
return(pros[3]);
}
/// <summary>
/// Handle an image. a_bitmap is passed by reference so that this function can
/// dispose and null it out to gain access to the file that's backing it. The
/// calling toolkit function will never perform any action with a_bitmap after
/// this function returns.
/// </summary>
/// <param name="a_szDg">Data group that preceeded this call</param>
/// <param name="a_szDat">Data argument type that preceeded this call</param>
/// <param name="a_szMsg">Message that preceeded this call</param>
/// <param name="a_sts">Current status</param>
/// <param name="a_bitmap">C# bitmap of the image</param>
/// <param name="a_szFile">File name, if doing a file transfer</param>
/// <param name="a_szTwimageinfo">data collected for us</param>
/// <param name="a_abImage">a byte array of the image</param>
/// <param name="a_iImageOffset">byte offset where the image data begins</param>
public TWAINCSToolkit.MSG ReportImage
(
string a_szTag,
string a_szDg,
string a_szDat,
string a_szMsg,
TWAIN.STS a_sts,
Bitmap a_bitmap,
string a_szFile,
string a_szTwimageinfo,
byte[] a_abImage,
int a_iImageOffset
)
{
// We're leaving...
if (m_blClosing || (m_graphics1 == null) || (a_bitmap == null))
{
return(TWAINCSToolkit.MSG.RESET);
}
// Let us be called from any thread...
if (this.InvokeRequired)
{
// We need a copy of the bitmap, because we're not going to wait
// for the thread to return. Be careful when using EndInvoke.
// It's possible to create a deadlock situation with the Stop
// button press.
BeginInvoke(new MethodInvoker(delegate() { ReportImage(a_szTag, a_szDg, a_szDat, a_szMsg, a_sts, a_bitmap, a_szFile, a_szTwimageinfo, a_abImage, a_iImageOffset); }));
return(TWAINCSToolkit.MSG.ENDXFER);
}
// Display the image...
switch (m_iCurrentPictureBox)
{
default:
case 0:
LoadImage(ref m_pictureboxImage1, ref m_graphics1, ref m_bitmapGraphic1, a_bitmap);
break;
case 1:
LoadImage(ref m_pictureboxImage2, ref m_graphics2, ref m_bitmapGraphic2, a_bitmap);
break;
case 2:
LoadImage(ref m_pictureboxImage3, ref m_graphics3, ref m_bitmapGraphic3, a_bitmap);
break;
case 3:
LoadImage(ref m_pictureboxImage4, ref m_graphics4, ref m_bitmapGraphic4, a_bitmap);
break;
case 4:
LoadImage(ref m_pictureboxImage5, ref m_graphics5, ref m_bitmapGraphic5, a_bitmap);
break;
case 5:
LoadImage(ref m_pictureboxImage6, ref m_graphics6, ref m_bitmapGraphic6, a_bitmap);
break;
case 6:
LoadImage(ref m_pictureboxImage7, ref m_graphics7, ref m_bitmapGraphic7, a_bitmap);
break;
case 7:
LoadImage(ref m_pictureboxImage8, ref m_graphics8, ref m_bitmapGraphic8, a_bitmap);
break;
}
// Next picture box...
if (++m_iCurrentPictureBox >= 8)
{
m_iCurrentPictureBox = 0;
}
// All done...
return(TWAINCSToolkit.MSG.ENDXFER);
}
/// <summary>
/// 初始化设备
/// </summary>
/// <param name="devName"></param>
public bool InitDevice(string devName)
{
_scanDevName = devName;
string szStatus = "";
if (_scanCore == null)
{
InitCore();
}
_scanCore.Send("DG_CONTROL", "DAT_IDENTITY", "MSG_SET", ref _scanDevName, ref szStatus);
// Open it...
TWAIN.STS sts = _scanCore.Send("DG_CONTROL", "DAT_IDENTITY", "MSG_OPENDS", ref _scanDevName, ref szStatus);
if (sts != TWAIN.STS.SUCCESS)
{
//MessageBox.Show("Unable to open scanner (it is turned on and plugged in?)");
return(false);
}
// Strip off unsafe chars. Sadly, mono let's us down here...
m_szProductDirectory = TWAINCSToolkit.CsvParse(_scanDevName)[11];
foreach (char c in new char[41]
{
'\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07',
'\x08', '\x09', '\x0A', '\x0B', '\x0C', '\x0D', '\x0E', '\x0F', '\x10', '\x11', '\x12',
'\x13', '\x14', '\x15', '\x16', '\x17', '\x18', '\x19', '\x1A', '\x1B', '\x1C', '\x1D',
'\x1E', '\x1F', '\x22', '\x3C', '\x3E', '\x7C', ':', '*', '?', '\\', '/'
}
)
{
m_szProductDirectory = m_szProductDirectory.Replace(c, '_');
}
szStatus = "";
string szCapability = "ICAP_XFERMECH,TWON_ONEVALUE,TWTY_UINT16,2";
sts = _scanCore.Send("DG_CONTROL", "DAT_CAPABILITY", "MSG_SET", ref szCapability, ref szStatus);
if (sts != TWAIN.STS.SUCCESS)
{
return(false);
}
// Decide whether or not to show the driver's window messages...
szStatus = "";
szCapability = "CAP_INDICATORS,TWON_ONEVALUE,TWTY_BOOL," + (m_blIndicators ? "1" : "0");
sts = _scanCore.Send("DG_CONTROL", "DAT_CAPABILITY", "MSG_SET", ref szCapability, ref szStatus);
if (sts != TWAIN.STS.SUCCESS)
{
return(false);
}
if (m_formsetup == null)
{
m_formsetup = new FormSetup(ref _scanCore, m_szProductDirectory);
}
return(true);
}
