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);
}