Question

我在使用ES400中的CameraCaptureDialog类时遇到错误，而在第二个图像上面写着“无法找到图像”。但是相同的代码在MC35中运行良好。

  Dim app_path As String
        Dim ccd As New CameraCaptureDialog
        Dim count As Integer
        count = TransImagelst.Images.Count
        Try

            ccd.Owner = Me
            ccd.DefaultFileName = "Image" & count.ToString & ".jpg"
            ccd.Mode = CameraCaptureMode.Still
            ccd.StillQuality = CameraCaptureStillQuality.Low
            ccd.Resolution = New Size(0, 0)
            ccd.Title = "Image"
            ccd.InitialDirectory = DataBase_Path & "\" & Region & "\Image"
            ccd.ShowDialog()


            'add files to image directory.
            If Not Directory.Exists(DataBase_Path & "\" & Region & "\Image") Then Directory.CreateDirectory(DataBase_Path & "\" & Region & "\Image")

            If ccd.FileName  String.Empty Then
                TransImagelst.ImageSize = New Drawing.Size(55, 55)
                TransImagelst.Images.Add(New Bitmap(ccd.FileName))
                TransImagelstv.View = View.LargeIcon
                TransImagelstv.LargeImageList = TransImagelst
                Dim lv As New ListViewItem("Image" & TransImagelst.Images.Count - 1)
                TransImagelstv.Items.Add(lv)
                lv.ImageIndex = TransImagelst.Images.Count - 1
            End If

请帮帮我。

Answer 1

我遇到了同样的问题。虽然ES400充满了功能，但它不适用于Cameracapturedialog。它甚至不支持Motorla EMDK SDK中的Imaging库。这是令人困惑的。 EMDK程序员指南有一个ES400编程条目，其中指出 - 您必须使用Microsoft的DirectShow来捕获图像。我试过这种方法，但我只能得到VGA分辨率，这对我来说是垃圾。如果这对您来说已经足够，您可以查看http://alexmogurenko.com/blog/directshownetcf/。在这一点上，我对ES400非常失望。我最后使用的是一个有点垃圾的简单解决方案，但至少它起作用（见下面的概述并祝你好运）。

using (Process proc = new Process())
{
    //This will open the internal camera application.
    proc.StartInfo = new System.Diagnostics.ProcessStartInfo(@"\Windows\Camera.lnk", string.Empty);
    if (proc.Start() == false)
    {
      Messagebox.(this did not work blablabla)
        return; 
    }
}
//The camera app has now focus, in the meantime, we wait with a new messagebox…
Messagebox.Show(“Ok,Cancel” to open picturedialog)
if (cancel)
    return;
string _filename = string.Empty; 
using (SelectPictureDialog _spd = new SelectPictureDialog())
{
    _spd.Owner = this;
    _spd.CameraAccess = false;
    _spd.LockDirectory = false;
    _spd.SortOrder = SortOrder.DateDescending;
    _spd.Title = "Select picture from camera";
    if (_spd.ShowDialog() == DialogResult.OK)
    {
        _filename = _spd.FileName;
    }
    else //No picture selected
        return;
}

//Handle image.. 
//Delete image from folder?

保存一个图像后ES400：CameraCaptureDialog错误

1 个答案: