サーバーとクライアントで構成されるプログラムを作成しました。サーバーはスクリーンショットのデスクトップを作成し、クライアントはスクリーンショットを受け取り、フォームに表示します。データ転送に問題があります。小さなストリップしか見えません。サーバー上の画像を送信する前に確認しましたが、問題ありません。ただし、クライアントは間違ったイメージを受け取ります。なにが問題ですか？XAML:
<Window x:Class="TestTCP.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="TestTCP" Height="350" Width="525">
<Grid>
<Image x:Name="img1" Margin="0"/>
</Grid>
</Window>
コード C#:
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
Task rec = new Task(WaitClientQuery);
rec.Start();
Task tk = new Task(Send);
tk.Start();
}
private void Send()//server part. take screen and send image
{
Bitmap temp = CaptureScreen(true);
MemoryStream ms3 = new MemoryStream();
BitmapImage image = new BitmapImage();
byte[] img_byte;
try
{
((System.Drawing.Bitmap)temp).Save(ms3, System.Drawing.Imaging.ImageFormat.Bmp);
image.BeginInit();
ms3.Seek(0, SeekOrigin.Begin);
image.StreamSource = ms3;
image.EndInit();
JpegBitmapEncoder encoder = new JpegBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(image));
using (MemoryStream ms = new MemoryStream())
{
encoder.Save(ms);
img_byte = ms.ToArray();
}
try
{
TcpClient client = new TcpClient("192.168.1.64", 4444);
NetworkStream netstream = client.GetStream();
netstream.Write(img_byte, 0, img_byte.Length);
netstream.Close();
client.Close();
}
catch (Exception)
{
}
}
catch (Exception ee)
{
}
}
[StructLayout(LayoutKind.Sequential)]
struct CURSORINFO
{
public Int32 cbSize;
public Int32 flags;
public IntPtr hCursor;
public POINTAPI ptScreenPos;
}
[StructLayout(LayoutKind.Sequential)]
struct POINTAPI
{
public int x;
public int y;
}
[DllImport("user32.dll")]
static extern bool GetCursorInfo(out CURSORINFO pci);
[DllImport("user32.dll")]
static extern bool DrawIcon(IntPtr hDC, int X, int Y, IntPtr hIcon);
const Int32 CURSOR_SHOWING = 0x00000001;
public static Bitmap CaptureScreen(bool CaptureMouse)
{
Bitmap result = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
try
{
using (Graphics g = Graphics.FromImage(result))
{
g.CopyFromScreen(0, 0, 0, 0, Screen.PrimaryScreen.Bounds.Size, CopyPixelOperation.SourceCopy);
if (CaptureMouse)
{
CURSORINFO pci;
pci.cbSize = System.Runtime.InteropServices.Marshal.SizeOf(typeof(CURSORINFO));
if (GetCursorInfo(out pci))
{
if (pci.flags == CURSOR_SHOWING)
{
DrawIcon(g.GetHdc(), pci.ptScreenPos.x, pci.ptScreenPos.y, pci.hCursor);
g.ReleaseHdc();
}
}
}
}
}
catch
{
result = null;
}
return result;
}
void WaitClientQuery()//receive data(client)
{
try
{
IPAddress ip ;
IPAddress.TryParse("192.168.1.64", out ip);
TcpListener listener = new TcpListener(ip, 4444);
listener.Start();
while (true)
{
TcpClient client = listener.AcceptTcpClient();
Thread thread = new Thread(new ParameterizedThreadStart(ReadMessage));
thread.IsBackground = true;
thread.Start(client);
}
}
catch (Exception ex)
{
}
}
void ReadMessage(object obj)
{
try
{
TcpClient client = (TcpClient)obj;
NetworkStream netstream = client.GetStream();
byte[] arr = new byte[client.ReceiveBufferSize ];
int len = netstream.Read(arr, 0, client.ReceiveBufferSize);
if (len > 0)
{
try
{
Action act = delegate
{
MemoryStream strmImg = new MemoryStream(arr);
BitmapImage myBitmapImage = new BitmapImage();
myBitmapImage.BeginInit();
myBitmapImage.StreamSource = strmImg;
myBitmapImage.EndInit();
img1.Source = myBitmapImage;
};
this.Dispatcher.BeginInvoke(act);
}
catch (Exception ex)
{
string message = ex.Message;
}
}
netstream.Close();
client.Close();
}
catch (Exception ex)
{
}
}
}
PS 結果、コンパイル後の画面プログラム: クリックして表示
