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());
}
}
}