private void btnSetAndAcquire_Click(object sender, System.EventArgs e)
{
float fFrameLeft, fFrameTop, fFrameRight, fFrameBottom, frameTemp;
try
{
fFrameLeft = Convert.ToSingle(edtFrameLeft.Text);
fFrameTop = Convert.ToSingle(edtFrameTop.Text);
fFrameRight = Convert.ToSingle(edtFrameRight.Text);
fFrameBottom = Convert.ToSingle(edtFrameBottom.Text);
if (fFrameLeft > fFrameRight)
{
frameTemp = fFrameLeft;
fFrameLeft = fFrameRight;
fFrameRight = frameTemp;
}
if (fFrameTop > fFrameBottom)
{
frameTemp = fFrameTop;
fFrameTop = fFrameBottom;
fFrameBottom = frameTemp;
}
}
catch (Exception)
{
MessageBox.Show("Please input numerical values in the input boxes.", "Error");
return;
}
if (fFrameLeft == fFrameRight || fFrameTop == fFrameBottom)
{
MessageBox.Show("Input Value Error: don't make left equal to right, or top equal to bottom.", "Error");
return;
}
if (fFrameLeft < fDefaultFrameLeft || fFrameTop < fDefaultFrameTop || fFrameRight > fDefaultFrameRight || fFrameBottom > fDefaultFrameBottom)
{
DialogResult drImageLayout = MessageBox.Show("Input values are out of rangles,do you want to continue?", "Warning", MessageBoxButtons.YesNo);
if (drImageLayout == System.Windows.Forms.DialogResult.Yes)
{
}
else
{
return;
}
}
if (m_TwainManager.SetImageLayout(new Margin(fFrameLeft, fFrameTop, fFrameRight, fFrameBottom)) == false)
{
MessageBox.Show("Fail to set image layout", "Error");
}
else
{
m_TwainManager.IfShowUI = false;
m_TwainManager.IfDisableSourceAfterAcquire = true;
m_TwainManager.EnableSource(this as IAcquireCallback);
}
}