EnableGetDeviceEvent Property

Summary

Enables or disables firing the GetDeviceEvent event.

Syntax

C++/CLI

Python

public bool EnableGetDeviceEvent { get; set; }

public: 
property bool EnableGetDeviceEvent { 
   bool get(); 
   void set (    bool ); 
}

EnableGetDeviceEvent # get and set (TwainSession)

Property Value

true to enable firing the event; false to stop firing it.

Example

using Leadtools; 
using Leadtools.Twain; 
 
 
TwainSession session = new TwainSession(); 
 
public void GetDeviceEventDataExample(IntPtr parent) 
{ 
   try 
   { 
      session.Startup(parent, "manufacturer", "productFamily", "version", "application", TwainStartupFlags.None); 
      session.GetDeviceEvent += new EventHandler<EventArgs>(session_GetDeviceEvent); 
      session.EnableGetDeviceEvent = true; 
 
      session.Acquire(TwainUserInterfaceFlags.Show); 
      session.Shutdown(); 
   } 
   catch 
   { } 
} 
 
void session_GetDeviceEvent(object sender, EventArgs e) 
{ 
   try 
   { 
      TwainDeviceEvent deviceEvent = session.GetDeviceEventData(); 
      string msg = string.Format("Event ={0}\nEvent Name ={1}\n", deviceEvent.Event, deviceEvent.DeviceName); 
      MessageBox.Show(msg); 
 
      if (deviceEvent.Event == TwainCapabilityValue.DeviceEventCheckBattery) 
      { 
         msg = string.Format("Battery Minutes ={0}\nBattery Percentage ={1}\n", deviceEvent.BatteryMinutes, deviceEvent.BatteryPercentage); 
         MessageBox.Show(msg); 
      } 
      else if (deviceEvent.Event == TwainCapabilityValue.DeviceEventCheckPowerSupply) 
      { 
         msg = string.Format("Power Supply ={0}\n", deviceEvent.PowerSupply); 
         MessageBox.Show(msg); 
      } 
      else if (deviceEvent.Event == TwainCapabilityValue.DeviceEventCheckPowerSupply) 
      { 
         msg = string.Format("XResolution ={0}\nYResolution ={1}\n", deviceEvent.XResolution, deviceEvent.YResolution); 
         MessageBox.Show(msg); 
      } 
      else if (deviceEvent.Event == TwainCapabilityValue.DeviceEventCheckFlash) 
      { 
         msg = string.Format("FlashUsed2 ={0}\n", deviceEvent.FlashUsed2); 
         MessageBox.Show(msg); 
      } 
      else if (deviceEvent.Event == TwainCapabilityValue.DeviceEventCheckAutomaticCapture) 
      { 
         msg = string.Format("Automatic Capture ={0}\nTime Before First Capture ={1}\nTime Between Captures = {2}\n", deviceEvent.AutomaticCapture, deviceEvent.TimeBeforeFirstCapture, deviceEvent.TimeBetweenCaptures); 
         MessageBox.Show(msg); 
      } 
   } 
   catch 
   { } 
}