我已經與摩托羅拉EMDK之前的MC55工作。我不確定爲什麼這些按鈕被禁用,並且自從您在六月份發佈此代碼後,您可能不再需要該答案,但可以採取以下解決方法:
而不是讓EMDK自行處理觸發器,你可以通過設置事件捕獲所有觸發器:
// 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;
然後,在你OnTrigger方法,你可以處理的觸發,並執行相應的操作。例如,您可以在按下任何觸發器時激活條形碼讀取器:
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();
}
}