private void btn_show_image_Click(object sender, EventArgs e)
{
if (!m_showing)
{
service.InitOCRService(false, Constants.CAMERAPATH);
timer1.Enabled = true;
m_showing = true;
btn_show_image.Text = "停止播放";
}
else
{
m_showing = false;
timer1.Enabled = false;
service.ReleaseOCRService();
pictureBox1.Image = m_bkBitmap;
btn_show_image.Text = "显示画面";
}
}