There’s a good example on how to set up a minimal service on MSDN. See the parts about writing the main function, entry point and also the example code. Once you’ve got a windows service built and running, you’ll discover the next major gotcha: it’s a pain to debug. There’s no terminal (and hence no … Read more
They are leftovers from cmd.exe emulating ms-dos directory handling, they basically have little use, and are more archaic than anything. Essentially, it keeps track of a per drive current directory, and is kept as an environment variable to pass to other processes with ease.
You will need to use the System.DirectoryServices namespace and try the following: DirectoryEntry root = new DirectoryEntry(“WinNT:”); foreach (DirectoryEntry computers in root.Children) { foreach (DirectoryEntry computer in computers.Children) { if (computer.Name != “Schema”) { textBox1.Text += computer.Name + “\r\n”; } } } It worked for me.
You can do this but you have to do it in two steps. First, call _open_osfhandle() to get a C run-time file descriptor from a Win32 HANDLE value, then call _fdopen() to get a FILE* object from the file descriptor.
MSDN states: Interprocess Communication Between 32-bit and 64-bit Applications 64-bit versions of Windows use 32-bit handles for interoperability. When sharing a handle between 32-bit and 64-bit applications, only the lower 32 bits are significant, so it is safe to truncate the handle (when passing it from 64-bit to 32-bit) or sign-extend the handle (when passing … Read more
Use _fileno followed by _get_osfhandle. Don’t forget to _close it when you are done. EDIT: it’s not clear to me that _get_osfhandle is supported on WinCE. However the docs for WinCE _fileno say it returns a “file handle” rather than “descriptor”. YMMV but this suggests that you can maybe just use _fileno return value directly … Read more
… there are downsides to using EXE compressors. Most notably: Upon startup of a compressed EXE/DLL, all of the code is decompressed from the disk image into memory in one pass, which can cause disk thrashing if the system is low on memory and is forced to access the swap file. In contrast, with uncompressed … Read more
So if I want to pass a list to my callback function through WinApi I use GCHandle // object to IntPtr (before calling WinApi): List<string> list1 = new List<string>(); GCHandle handle1 = GCHandle.Alloc(list1); IntPtr parameter = (IntPtr) handle1; // call WinAPi and pass the parameter here // then free the handle when not needed: handle1.Free(); … Read more
For version 2.0, you must build the project from source. Here’s what you will need: The OpenCV installer. CMake. Here’s the CMake installer. Instructions for using CMake to install OpenCV-2.0.01-win32. Those instructions need an extra step if you are using a vc++ Express edition. In that case you must un-check ENABLE_OPENMP when running the CMake … Read more
You cannot do that. Let’s start by rephrasing the problem statement to more easily follow along, why that is the case: “How do I convince a program that has chosen to ignore mouse input messages—by decision or coincidence—to acknowledge mouse input messages?” As it turns out, that part is actually solved. As the documentation for … Read more