WIA不会退还所有设备 [英] WIA not returning all the devices

问题描述

我正在尝试使用C#开发远程图像扫描服务.当我调用以下函数时，它仅返回2个WIA设备(扫描仪).但是我的系统(xp)安装了4个WIA设备，包括2个无线扫描仪(一个Brother和一个Samsung scx 3200w无线扫描仪).当我尝试使用其他应用程序(例如photoshop)获取图像时，它会显示所有4种设备.请帮助-谢谢

i am trying to develop a remote image scanning service in c#. when i call the following function, it returns only 2 WIA devices (scanners). But my system (xp) is having 4 WIA devices installed, including 2 wireless scanners (one Brother and one Samsung scx 3200w wireless scanners). when i try to acquire image using other app like photoshop, it shows all 4 devices. pl help- Thanks

public static List<string> GetDevices()
{
    List<string> devices = new List<string>();
    WIA.DeviceManager manager = new WIA.DeviceManager() ;

    foreach (WIA.DeviceInfo info in manager.DeviceInfos)
    {
        devices.Add(info.DeviceID);
    }

    return devices;
}

推荐答案

首先，为了使WIA可以看到某个设备，它需要安装WIA兼容的驱动程序.如果没有，WIA将看不到它.

其次，Photoshop不使用WIA.

First, in order for a devie to be seen by WIA, it needs to have WIA compatible drivers installed. If not, WIA won''t see it.

Second, Photoshop doesn''t use WIA.

这篇关于WIA不会退还所有设备的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！