// 关闭设备
private void BnClose_Click(object sender, EventArgs e)
{
// 关闭海康相机
if ((chooseHIK) && (!chooseBasler))
{
try
{
// 取流标志位清零
if (hikCanGrab == true)
{
hikCanGrab = false;
hikGrabThread.Join();
}
if (m_BufForDriver != IntPtr.Zero)
{
Marshal.Release(m_BufForDriver);
}
// 释放相机
hIKVisionCamera.DestroyCamera();
// 控件操作
SetCtrlWhenClose();
}
catch
{
MessageBox.Show("关闭相机失败，请重启！", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
// 关闭basler相机
else if ((chooseBasler) && (!chooseHIK))
{
try
{
if (baslerCanGrab == true)
{
baslerCanGrab = false;
baslerGrabThread.Join();
}
// 释放相机
baslerCamera.DestroyCamera();
// 控件操作
SetCtrlWhenClose();
}
catch
{
MessageBox.Show("关闭相机失败，请重启！", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
}
// 关闭设备
private void BnClose_Click(object sender, EventArgs e)
{
// 关闭海康相机
if ((chooseHIK) && (!chooseBasler))
{
try
{
// 取流标志位清零
if (hikCanGrab == true)
{
hikCanGrab = false;
hikGrabThread.Join();
}
if (m_BufForDriver != IntPtr.Zero)
{
Marshal.Release(m_BufForDriver);
}
// 释放相机
hIKVisionCamera.DestroyCamera();
// 控件操作
SetCtrlWhenClose();
}
catch
{
MessageBox.Show("关闭相机失败，请重启！", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
// 关闭basler相机
else if ((chooseBasler) && (!chooseHIK))
{
try
{
if (baslerCanGrab == true)
{
baslerCanGrab = false;
baslerGrabThread.Join();
}
// 释放相机
baslerCamera.DestroyCamera();
// 控件操作
SetCtrlWhenClose();
}
catch
{
MessageBox.Show("关闭相机失败，请重启！", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
}
else if (chooseUSB && (!chooseBasler) && (!chooseHIK))
{
//关闭USB相机
if (usbCanGrab)
{
this.usblabelinfo.Text = "正在关闭USB相机";
this.usblabelinfo.Visible = true;
Func <bool> delFunc = () => { return(usbDeviceSource.close()); };
IAsyncResult result = delFunc.BeginInvoke(null, null);
Thread loading = new Thread(() =>
{
int count = 0;
while (!result.IsCompleted) //(!result.AsyncWaitHandle.WaitOne(500))
{
// 询问是否完成操作，否则做其它事情。
if (count < 4)
{
this.Invoke(new Action(() => { usblabelinfo.Text += "."; this.Cursor = Cursors.WaitCursor; }));
}
else
{
count = 0;
this.Invoke(new Action(() => { usblabelinfo.Text = "正在关闭USB相机"; }));
}
count++;
}
//获取异步操作结果
if (delFunc.EndInvoke(result))
{
// wait ~ 3 seconds
count = 0;
for (int i = 0; i < 6; i++)
{
System.Threading.Thread.Sleep(500);
if (count < 4)
{
this.Invoke(new Action(() => { this.usblabelinfo.Text += "."; }));
}
else
{
count = 0;
this.Invoke(new Action(() => { this.usblabelinfo.Text = "正在启动USB相机."; }));
}
count++;
i++;
}
// 控件操作
SetCtrlWhenClose();
// 清空pictureBox
this.Invoke(new Action(() => { this.Cursor = Cursors.Default; this.pictureBox1.Image = null; }));
usbCanGrab = false;
}
else
{
MessageBox.Show("关闭相机失败，请重启！", "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
return;
}
});
loading.IsBackground = true;
loading.Start();
}
}
}
