EnumDevicesEvent Event (original) (raw)
Summary
Occurs for each found WIA device after calling the EnumDevices method.
Syntax
public:
event EventHandler<WiaEnumDevicesEventArgs^>^ EnumDevicesEvent
def EnumDevicesEvent(sender,e): # sender: WiaSession e: WiaEnumDevicesEventArgs Event Data
The event handler receives an argument of type WiaEnumDevicesEventArgs containing data related to this event. The following WiaEnumDevicesEventArgs properties provide information specific to this event.
| Property | Description |
|---|---|
| DeviceDesc | Gets the description of the device being enumerated. |
| DeviceID | Gets the ID string for the enumerated device. |
| DeviceName | Gets the name of the enumerated device. |
| Stop | Enables or disables firing the EnumDevicesEvent event. |
Example
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Wia;
public void EnumDevicesExample(IntPtr parent)
{
if (!WiaSession.IsAvailable(WiaVersion.Version1))
{
Console.WriteLine("WIA version 1.0 not installed.");
return;
}
WiaSession wiaSession = new WiaSession();
wiaSession.Startup(WiaVersion.Version1);
DialogResult res = wiaSession.SelectDeviceDlg(parent, WiaDeviceType.Default, WiaSelectSourceFlags.NoDefault);
if (res != DialogResult.OK)
{
Console.WriteLine("Error selecting WIA device.");
wiaSession.Shutdown();
return;
}
wiaSession.EnumDevicesEvent += new EventHandler<WiaEnumDevicesEventArgs>(wiaSession_EnumDevicesEvent);
Console.WriteLine("Available WIA Devices:\n");
wiaSession.EnumDevices();
wiaSession.EnumDevicesEvent -= new EventHandler<WiaEnumDevicesEventArgs>(wiaSession_EnumDevicesEvent);
wiaSession.Shutdown();
}
void wiaSession_EnumDevicesEvent(object sender, WiaEnumDevicesEventArgs e)
{
string strMsg = string.Empty;
// print out some information about each device found into the console window.
strMsg = string.Format("\tDevice Name: {0}\n\tDevice Id: {1}\n\tDevice Description: {2}\n\n", e.DeviceName, e.DeviceID, e.DeviceDesc);
Console.WriteLine(strMsg);
}