private void AcquireBuffered_Click(object sender, EventArgs e)
{
if (SelectedSource != 0)
{
TwainAPI.DTWAIN_SetBlankPageDetection(SelectedSource, 98.5,
(int)TwainAPI.DTWAIN_BP_AUTODISCARD_ANY,
DiscardBlankPages.Checked ? 1 : 0);
DTWAIN_ARRAY acquireArray = TwainAPI.DTWAIN_CreateAcquisitionArray();
this.Enabled = false;
int status = 0;
if (TwainAPI.DTWAIN_AcquireBufferedEx(SelectedSource, TwainAPI.DTWAIN_PT_DEFAULT,
TwainAPI.DTWAIN_ACQUIREALL, UseSourceUI.Checked ? 1 : 0, 0, acquireArray, ref status) == 0)
{
MessageBox.Show("Acquisition Failed", "TWAIN Error");
return;
}
if (TwainAPI.DTWAIN_ArrayGetCount(acquireArray) == 0)
{
MessageBox.Show("No Images Acquired", "");
return;
}
// Display the DIBS
//...
DIBDisplayerDlg sDIBDlg = new DIBDisplayerDlg(acquireArray);
sDIBDlg.ShowDialog();
TwainAPI.DTWAIN_DestroyAcquisitionArray(acquireArray, 0);
this.Enabled = true;
}
}
private void LoggingOptions_Click(object sender, EventArgs e)
{
long LogFlags = TwainAPI.DTWAIN_LOG_ALL & ~TwainAPI.DTWAIN_LOG_ERRORMSGBOX;
LogFileSelectionDlg logDlg = new LogFileSelectionDlg();
DialogResult nResult = logDlg.ShowDialog();
if (nResult == DialogResult.OK)
{
int debugOption = logDlg.GetDebugOption();
switch (debugOption)
{
case 0:
break;
case 1:
TwainAPI.DTWAIN_SetTwainLog(0, "");
break;
case 2:
TwainAPI.DTWAIN_SetTwainLog((int)(LogFlags | TwainAPI.DTWAIN_LOG_USEFILE), logDlg.GetFileName());
break;
case 3:
TwainAPI.DTWAIN_SetTwainLog((int)(LogFlags & ~TwainAPI.DTWAIN_LOG_USEFILE), "");
MessageBox.Show("The DebugView debug monitor will start...");
Process.Start("DbgView.exe");
break;
}
}
}
private void CustomSelectSource_Load(object sender, EventArgs e)
{
sourceSelected = false;
DTWAIN_ARRAY SourceArray = 0;
TwainAPI.DTWAIN_EnumSources(ref SourceArray);
int nCount = TwainAPI.DTWAIN_ArrayGetCount(SourceArray);
if (nCount <= 0)
{
Close();
}
// Display the sources
DTWAIN_SOURCE CurSource = 0;
for (int i = 0; i < nCount; ++i)
{
StringBuilder szName = new StringBuilder(256);
TwainAPI.DTWAIN_ArrayGetAtLong(SourceArray, i, ref CurSource);
TwainAPI.DTWAIN_GetSourceProductName(CurSource, szName, 255);
listSources.Items.Add(szName.ToString());
}
listSources.SelectedIndex = 0;
// Display Info about sources
string sText = nCount.ToString() + " TWAIN Source(s) Available for Selection";
editSourceInfo.Text = sText;
}
private void AboutDlg_Load(object sender, EventArgs e)
{
int nChars = TwainAPI.DTWAIN_GetVersionInfo(IntPtr.Zero, -1);
StringBuilder szInfo = new StringBuilder(nChars);
TwainAPI.DTWAIN_GetVersionInfo(szInfo, nChars);
edInfo.Text = szInfo.ToString();
}
// Displays the DIB bitmap for acquisition nCurrentAcquisition, page nCurDib
private void DisplayTheDib()
{
int dib = TwainAPI.DTWAIN_GetAcquiredImage(AcquireArray, nCurrentAcquisition, nCurDib);
IntPtr dibPtr = GlobalLock(dib);
this.dibBox.Image = BitmapFromDIB(dibPtr);
GlobalUnlock(dibPtr);
EnablePageButtons();
}
private void CloseSource_Click(object sender, EventArgs e)
{
if (SelectedSource != 0)
{
TwainAPI.DTWAIN_CloseSource(SelectedSource);
SelectedSource = 0;
SetCaptionToSourceName();
EnableSourceItems(false);
}
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose(bool disposing)
{
TwainAPI.DTWAIN_SysDestroy();
if (disposing)
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose(disposing);
}
private void DIBDisplayerDlg_Load(object sender, EventArgs e)
{
// Set up acquisition combo box
nCurrentAcquisition = 0;
nCurDib = 0;
int nCount = TwainAPI.DTWAIN_GetNumAcquisitions(AcquireArray);
for (int i = 1; i <= nCount; ++i)
{
this.cmbAcquisition.Items.Add(i.ToString());
}
this.cmbAcquisition.SelectedIndex = 0;
// Display the bitmap
DisplayTheDib();
}
private void EnablePageButtons()
{
int nCount = TwainAPI.DTWAIN_GetNumAcquiredImages(AcquireArray, nCurrentAcquisition);
this.buttonNext.Enabled = (nCurDib < nCount - 1);
this.buttonPrev.Enabled = (nCurDib > 0);
if (nCount == 0)
{
}
else
{
int sDib = nCurDib + 1;
this.edPageCurrent.Text = sDib.ToString();
this.edPageTotal.Text = nCount.ToString();
}
}
private void SetCaptionToSourceName()
{
StringBuilder szSourceName = new StringBuilder(256);
string sTitle = sOrigTitle;
if (SelectedSource != 0)
{
TwainAPI.DTWAIN_GetSourceProductName(SelectedSource, szSourceName, 255);
sTitle += " - ";
sTitle += szSourceName;
this.Text = sTitle;
}
else
{
this.Text = sOrigTitle;
}
}
public DTwainDemo()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
sOrigTitle = this.Text;
TwainAPI.DTWAIN_SysInitialize();
SelectedSource = 0;
if (TwainAPI.DTWAIN_IsTwainAvailable() == 0)
{
SelectSource.Enabled = false;
SelectSourceByNameBox.Enabled = false;
}
}
private void SourcePropertiesDlg_Load(object sender, EventArgs e)
{
StringBuilder szInfo = new StringBuilder(256);
TwainAPI.DTWAIN_GetSourceProductName(m_Source, szInfo, 255);
this.edProductName.Text = szInfo.ToString();
TwainAPI.DTWAIN_GetSourceProductFamily(m_Source, szInfo, 255);
this.edFamilyName.Text = szInfo.ToString();
TwainAPI.DTWAIN_GetSourceManufacturer(m_Source, szInfo, 255);
this.edManufacturer.Text = szInfo.ToString();
TwainAPI.DTWAIN_GetSourceVersionInfo(m_Source, szInfo, 255);
this.edVersionInfo.Text = szInfo.ToString();
int lMajor = 0, lMinor = 0;
TwainAPI.DTWAIN_GetSourceVersionNumber(m_Source, ref lMajor, ref lMinor);
string sVersion = lMajor.ToString() + "." + lMinor.ToString();
this.edVersion.Text = sVersion;
DTWAIN_ARRAY AllCaps = 0;
int Val = 0;
TwainAPI.DTWAIN_EnumSupportedCaps(m_Source, ref AllCaps);
int nSize = TwainAPI.DTWAIN_ArrayGetCount(AllCaps);
for (int i = 0; i < nSize; ++i)
{
// get the cap value
TwainAPI.DTWAIN_ArrayGetAtLong(AllCaps, i, ref Val);
// get the name from the cap
TwainAPI.DTWAIN_GetNameFromCap(Val, szInfo, 255);
this.listCaps.Items.Add(szInfo.ToString());
}
this.edTotalCaps.Text = nSize.ToString();
TwainAPI.DTWAIN_EnumCustomCaps(m_Source, ref AllCaps);
this.edCustomCaps.Text = TwainAPI.DTWAIN_ArrayGetCount(AllCaps).ToString();
TwainAPI.DTWAIN_EnumExtendedCaps(m_Source, ref AllCaps);
this.edExtendedCaps.Text = TwainAPI.DTWAIN_ArrayGetCount(AllCaps).ToString();
}
private void AcquireToFile(int nWhich)
{
if (SelectedSource != 0)
{
int status = 0;
int bError = 0;
long FileFlags = 0;
string tFileName = "";
int fileType = 0;
switch (nWhich)
{
case 0:
FileFlags = TwainAPI.DTWAIN_USELONGNAME | TwainAPI.DTWAIN_USENATIVE;
TwainAPI.DTWAIN_SetBlankPageDetection(SelectedSource, 98.5,
(int)TwainAPI.DTWAIN_BP_AUTODISCARD_ANY,
DiscardBlankPages.Checked ? 1 : 0);
FileTypeDlg fDlg = new FileTypeDlg();
fDlg.ShowDialog();
tFileName = fDlg.GetFileName();
StringBuilder szSourceName = new StringBuilder(tFileName);
fileType = fDlg.GetFileType();
break;
case 1:
if (TwainAPI.DTWAIN_IsFileXferSupported(SelectedSource, TwainAPI.DTWAIN_ANYSUPPORT) == 0)
{
MessageBox.Show("Sorry. The selected driver does not have built-in file transfer support.");
return;
}
if (TwainAPI.DTWAIN_IsFileXferSupported(SelectedSource, TwainAPI.DTWAIN_FF_BMP) == 0)
{
string sText = "Sorry. This demo program only supports built-in BMP file transfers.\r\n";
sText += "However, the DTWAIN library will support all built-in formats if your driver\r\n";
sText += "supports other formats.";
MessageBox.Show(sText);
return;
}
FileFlags = TwainAPI.DTWAIN_USESOURCEMODE | TwainAPI.DTWAIN_USELONGNAME;
fileType = TwainAPI.DTWAIN_FF_BMP;
tFileName = ".\\IMAGE.BMP";
MessageBox.Show("The name of the image file that will be saved is IMAGE.BMP\n");
break;
}
bError = TwainAPI.DTWAIN_AcquireFile(SelectedSource,
tFileName,
fileType,
(int)FileFlags,
TwainAPI.DTWAIN_PT_DEFAULT, /* Use default */
TwainAPI.DTWAIN_ACQUIREALL, /* Get all pages */
UseSourceUI.Checked ? 1 : 0,
1, /* Close Source when UI is closed */
ref status
);
if (bError == 0)
{
MessageBox.Show("Error acquiring or saving file.");
}
else
if (status == TwainAPI.DTWAIN_TN_ACQUIREDONE)
{
MessageBox.Show("Image file saved successfully");
}
else
{
MessageBox.Show("The acquisition returned a status of " + status.ToString());
}
}
}
private void SelectTheSource(int nWhich)
{
if (SelectedSource != 0)
{
DialogResult nReturn;
nReturn = MessageBox.Show("For this demo, only one Source can be opened. Close current Source?",
"DTWAIN Message", MessageBoxButtons.YesNo);
if (nReturn == DialogResult.Yes)
{
TwainAPI.DTWAIN_CloseSource(SelectedSource);
SelectedSource = 0;
// EnableSourceItems( FALSE );
}
else
{
return;
}
}
this.Enabled = false; // disable the main form
switch (nWhich)
{
case 0:
// Select the source
SelectedSource = TwainAPI.DTWAIN_SelectSource();
break;
case 1:
SelectSourceByNameBox objSelectSourceByName = new SelectSourceByNameBox();
DialogResult nResult = objSelectSourceByName.ShowDialog();
if (nResult == DialogResult.OK)
{
SelectedSource = TwainAPI.DTWAIN_SelectSourceByName(objSelectSourceByName.GetText());
}
break;
case 2:
SelectedSource = TwainAPI.DTWAIN_SelectDefaultSource();
break;
case 3:
CustomSelectSource customSourceDlg = new CustomSelectSource();
DialogResult dResult = customSourceDlg.ShowDialog();
if (dResult == DialogResult.OK)
{
SelectedSource = TwainAPI.DTWAIN_SelectSourceByName(customSourceDlg.GetSourceName());
}
break;
}
this.Enabled = true; // re-enable the main form
if (SelectedSource != 0)
{
if (TwainAPI.DTWAIN_OpenSource(SelectedSource) != 0)
{
TwainAPI.DTWAIN_EnableFeeder(SelectedSource, 1);
SetCaptionToSourceName();
EnableSourceItems(true);
return;
}
else
{
MessageBox.Show("Error Opening Source", "TWAIN Error", MessageBoxButtons.OK);
}
}
else
{
MessageBox.Show("Error Selecting Source", "TWAIN Error", MessageBoxButtons.OK);
}
EnableSourceItems(false);
}
