marshalling

问题 I created those two methods to convert Native utf-8 strings (char*) into managed string and vice versa. The following code does the job: public IntPtr NativeUtf8FromString(string managedString) { byte[] buffer = Encoding.UTF8.GetBytes(managedString); // not null terminated Array.Resize(ref buffer, buffer.Length + 1); buffer[buffer.Length - 1] = 0; // terminating 0 IntPtr nativeUtf8 = Marshal.AllocHGlobal(buffer.Length); Marshal.Copy(buffer, 0, nativeUtf8, buffer.Length); return nativeUtf8; }

问题 I created those two methods to convert Native utf-8 strings (char*) into managed string and vice versa. The following code does the job: public IntPtr NativeUtf8FromString(string managedString) { byte[] buffer = Encoding.UTF8.GetBytes(managedString); // not null terminated Array.Resize(ref buffer, buffer.Length + 1); buffer[buffer.Length - 1] = 0; // terminating 0 IntPtr nativeUtf8 = Marshal.AllocHGlobal(buffer.Length); Marshal.Copy(buffer, 0, nativeUtf8, buffer.Length); return nativeUtf8; }

问题 I want to copy bytes with Marshall.Copy. My code work, but bytes is strange for me. I think, I got indexes not real bytes. If this compute and save back, I got different colors in image with lot bigger byte size (image size is same). Bitmap bmp = new Bitmap(imagepath); Width = bmp.Width; Height = bmp.Height; byte[] data; BitmapData bdata; switch (bmp.PixelFormat) { case PixelFormat.Format8bppIndexed: { data = new byte[Width * Height]; bdata = bmp.LockBits(new Rectangle(0, 0, Width, Height)

问题 I want to copy bytes with Marshall.Copy. My code work, but bytes is strange for me. I think, I got indexes not real bytes. If this compute and save back, I got different colors in image with lot bigger byte size (image size is same). Bitmap bmp = new Bitmap(imagepath); Width = bmp.Width; Height = bmp.Height; byte[] data; BitmapData bdata; switch (bmp.PixelFormat) { case PixelFormat.Format8bppIndexed: { data = new byte[Width * Height]; bdata = bmp.LockBits(new Rectangle(0, 0, Width, Height)

问题 my app is an .exe, it registers itself to ROT. [ComVisible(true)] [ProgId("My.App")] public class MyApp { public Interop_MyApp.IXXX XXX { get { return XXXImpl.Instance; } // -> Instance is derived from Interop_MyApp.IXXX, and static } public MyApp() { } }; I start the .exe above, it's running. Then I start an other .exe, which tries to get the XXX. object o = Marshal.GetActiveObject("My.App"); // -> returns a __ComObject, fine if (o == null) throw new InvalidOperationException("Could not

问题 I'd like to find how to influence how Spring automatically marshals Java objects to XML when sending a POST request via RestTemplate . Particularly, how to configure what is in the XML headers ( encoding , DOCTYPE , ...). There are plenty of questions closely touching the topic (Include DOCTYPE for Spring Jaxb2Marshaller, How to add DOCTYPE and xml processing instructions when marshalling with JAXB?, how to add DOCTYPE in jaxb marshaller, How to declare doctype ,xml version and encoding in

问题 I am implementing new client server app. I would like to ask, What is the best way to send and receive objects via network? On server side , I have something like this but I am getting null pointer exception: @RequestMapping(value = "/test") @ResponseBody public Student myAction(){ Student student = new Student(1,"Miso"); return student; } On client side: public Student test(){ String prodGroup = ""; Student obj = null; try { url = new URL("http://localhost:8080/getData/test"); urlConn =

问题 I am using VS 2015 Community with an ASP.NET MVC Web Application that uses a 3rd party C++ DLL I do not have source code for. Documentation is very scarce as is any helpful communication with the authors of the 3rd party DLL. I've asked a related SO Question and received a good answer from @Steven. I've modified my code according to his answer and am trying to make a successful call to the 3rd party C++ DLL. The code: // Call DLL MyDLLInput _DLLInput = new MyDLLInput(); { SomeList = new int

问题 I use an int type to represent an enum. I want to convert it to string when I marshal it to JSON, AFAIK, I should implement UnmarshalJSON and MarshalJSON , but it complains: marshal error: json: error calling MarshalJSON for type main.trxStatus: invalid character 'b' looking for beginning of valueunexpected end of JSON input when marshalling. Then I've add the quotes to the marshalled string: func (s trxStatus) MarshalJSON() ([]byte, error) { return []byte("\"" + s.String() + "\""), nil } the

问题 I have this test java app: @XmlRootElement public class Car { @XmlElement(namespace="http://www.example.com/CAR_NAME") private String name; @XmlElement(namespace="http://www.example.com/CAR_PRICE") private int price; @XmlElement(namespace="http://www.example.com/CAR_BUS") private Bus bus; //constructors, getters and setters @XmlRootElement public class Bus { @XmlElement(namespace="http://www.example.com/BUS_NAME") private String name; @XmlElement(namespace="http://www.example.com/BUS_PRICE")