DllImport Pointer to Structure C# - social.msdn.microsoft.com
Nov 6, 2003 · User-1496690631 posted ok, I can work with the DllImport when it is just datatypes, but when I get a pointer to a structure I cannot get it to work. What I have is an API the sends a pointer to the memory of a stuct for the device driver. I am at a loss when I try to create a struct and then a wrapper class it is not working. What i Have is a API call that takes no parameters …
c# pinvoke writefile error 87 invalid parameter
Sep 20, 2013 · i have a program im converting from c++ to c# which uses alot of winapi functions
Convert in c# a function with structure containing a pointer
Feb 17, 2014 · I set the port and the bit, then I want to read the state. How can I convert in C#, USING dLLiMPORT, the C function DRV_DioReadBit containing the structure PT_DioReadBit.
Marshaling a C++ two-dimensional fixed length char array as a …
Feb 19, 2010 · I am trying to call an unmanaged C++ function, that has a structure as an input parameter. The structure is defined in the header file like this: struct MyStruct { int siOrder; char aaszNames [6] [25]; int siId [6]; int siTones [6]; }; I tried to declare the managed struct as following: [StructLayoutAttribute (LayoutKind.Sequential, CharSet=CharSet.Ansi)] public struct …
How do I create and/or bind data from a native c++ struct to a …
Jun 13, 2009 · I have some data that is currently read in from a file (using a native c++ code class) and stored in a struct. I would like to display it in a dataGridView in a Windows Form Application. I've had some success doing this in unbound mode, including populating the grid, changing values in the cell and reflecting this by updating the struct with the new values. Is …
How do I Mute the Microphone in C# - social.msdn.microsoft.com
Jul 24, 2012 · I think you can refer to this source code (it's in C though, so you have to learn how to translate it to C# through P/Invoke.). The code contains function to set mute to WAVEIN (the MCI object name for microphone). It only refers to MCI …
Using User32.dll's InvalidateRect - social.msdn.microsoft.com
Aug 31, 2006 · Unless anybody has a better suggestion, I am trying to redraw a portion of the desktop using InvalidateRect from User32. Basically, I have an image that I am drawing to the desktop, and need to clear where it was just drawn before drawing the next frame. I'm currently failing miserably (i.e. nothing happens) with this code: Rectangle Rect = new Rectangle …
System.ValueType and System.Object - social.msdn.microsoft.com
May 3, 2008 · This is just an aspect of the C# language, which provides a dedicated keyword "struct" for this purpose. It is insightful to note that in the metadata for an EXE or DLL, the only thing that differentiates a "class" and a "struct" is that a class extends System.Object (or another class that is not System.ValueType) whereas a value type extends ...
Nested dictionary in c# - social.msdn.microsoft.com
Oct 14, 2014 · I have create a property for Enum Value. Created this method for get data type: public byte [] ToByteArray () { byte [] data = new byte [3]; switch (dataformatMessage ...
stop garbage collection on unmanaged code in C#
Jun 3, 2011 · I heard I need to use dispose pattern and I tried that here but I am 99% sure I failed at it. In my main program I have a button event that calls hook () and another to unhook () when its done. using System; using System.Collections.Generic; using System.Text; using System.Runtime.InteropServices; using System.Windows.Forms; using System.IO; …