我已经与摩托罗拉EMDK之前的MC55工作。我不确定为什么这些按钮被禁用,并且自从您在六月份发布此代码后,您可能不再需要该答案,但可以采取以下解决方法:
而不是让EMDK自行处理触发器,你可以通过设置事件捕获所有触发器:
// Create a trigger device to handle all trigger events of stage 2 (pressed) or RELEASED
var device = new TriggerDevice(TriggerID.ALL_TRIGGERS, new[] { TriggerState.RELEASED, TriggerState.STAGE2 });
var trigger = new Trigger(device);
trigger.Stage2Notify += OnTrigger;
然后,在你OnTrigger方法,你可以处理的触发,并执行相应的操作。例如,您可以在按下任何触发器时激活条形码读取器:
private void OnTrigger(object sender, TriggerEventArgs e)
{
if (e.NewState == e.PreviousState)
return;
// Pseudocode
if (e.NewState == TriggerState.RELEASED)
{
myBarcodeReader.Actions.ToggleSoftTrigger();
myBarcodeReader.Actions.Flush();
myBarcodeReader.Actions.Disable();
}
else if (e.NewState == TriggerState.STAGE2)
{
// Prepare the barcode reader for scanning
// This initializes various objects but does not actually enable the scanner device
// The scanner device would still need to be triggered either via hardware or software
myBarcodeReader.Actions.Enable();
myBarcodeReader.Actions.Read(data);
// Finally, turn on the scanner via software
myBarcodeReader.Actions.ToggleSoftTrigger();
}
}