private void Button_Click(object sender, RoutedEventArgs e)
{
CalibrationScanGun win = new CalibrationScanGun();
win.Owner = Window.GetWindow(sender as Button);
//窗体关闭后，获取 ScanGun ID
str_ScanGunID = win.ShowDialog();
//如果返回的ID有值，那么就保存
if (str_ScanGunID != string.Empty)
{
Properties.Settings.Default.MyScanGun = str_ScanGunID;
Properties.Settings.Default.Save();
textBox_ScanGunInfoCali.Text = str_ScanGunID;
}
}
private void Button_Click(object sender, RoutedEventArgs e)
{
CalibrationScanGun win = new CalibrationScanGun();
win.Owner = Window.GetWindow(sender as Button);
//窗体关闭后，获取 ScanGun ID
str_ScanGunID = win.ShowDialog();
//如果返回的ID有值，那么就保存
if (str_ScanGunID != string.Empty)
{
Properties.Settings.Default.MyScanGun = str_ScanGunID;
Properties.Settings.Default.Save();
textBox_ScanGunInfoCali.Text = str_ScanGunID;
}
}
void ComponentDispatcher_ThreadFilterMessage(ref System.Windows.Interop.MSG msg, ref bool handled)
{
switch (msg.message)
{
//这里只能以 INPUT 来截取，不支持 KEYDOWN 来截取，不然后面的 RawInput 获取值的时候无效
case Win32.WM_INPUT:
{
// Should never get here if you are using PreMessageFiltering
KeyPressEvent keyPressEvent;
_keyboardDriver.ProcessRawInput(msg.lParam, out keyPressEvent);
textBox_ScanGunInfoNow.Text = keyPressEvent.DeviceName;
//只处理一次事件，不然有按下和弹起事件
if (keyPressEvent.KeyPressState == "MAKE" && keyPressEvent.DeviceName == str_ScanGunID && str_ScanGunID != string.Empty)
{
textBox_Output.Focus();
//找到结尾标志的时候，就不加入队列了，然后就发送到界面上赋值
if (KeyInterop.KeyFromVirtualKey(keyPressEvent.VKey) == Key.Enter)
{
_isMonitoring = false;
string str_Out = string.Empty;
ThreadPool.QueueUserWorkItem((o) =>
{
while (_eventQ.Count > 0)
{
RawInput_dll.Win32.KeyAndState keyAndState = _eventQ.Dequeue();
str_Out += CalibrationScanGun.Chr(keyAndState.Key).ToString();
System.Threading.Thread.Sleep(5); // might need adjustment
}
Application.Current.Dispatcher.BeginInvoke((Action)(() =>
{
textBox_Output.Text = str_Out;
}));
_eventQ.Clear();
_isMonitoring = true;
});
}
// 回车 作为结束标志
if (_isMonitoring)
{
//存储 Win32 按键的int值
int key = keyPressEvent.VKey;
byte[] state = new byte[256];
Win32.GetKeyboardState(state);
_eventQ.Enqueue(new RawInput_dll.Win32.KeyAndState(key, state));
}
}
}
break;
case Win32.WM_KEYDOWN:
{
KeyPressEvent keyPressEvent;
_keyboardDriver.ProcessRawInput(msg.lParam, out keyPressEvent);
if (keyPressEvent.DeviceName == str_ScanGunID && str_ScanGunID != string.Empty)
{
handled = true;
}
}
break;
//这里截获这个消息有问题，替代方法是放到 WndProc 中去获取
case Win32.WM_USB_DEVICECHANGE:
{
}
break;
default:
break;
}
return;
}
