From:Mixing Native and Managed Types in C++ Mixing Native and Managed Types in C++ Wow, its turning into a busy month. I just haven’t had any time to blog despite having a number
C# contains a struct called Intptr, which aims to be the same position as void* in unmanaged world. So it will be 32bit on x32 hardware and OS and be 64bit on x63 platform. So be careful about misusing it with int. Int keeps 4 bytes on any
1. VS project setting regards with platformFor native c++ project, there are debug | win32, debug | x64, release | win32, release | x64 configurations. Note:"debug" / "release" can be renamed while "win32" / "x64" can't.For .net project, the
1. Boxing and UnBoxing in C++/CLIint^ hi = 123;int c = *hi;2. Use C# functions with ref/out arguments in C++/CLIIf the argument is dotNet value type, then directly create an instance of it on stack in C++/CLI and pass it when calling the C# function;
In a managed C++ project, we can use the “using namespace” expression to include managed types. Just like using “#include” incorrectly will cause some compile error, declaring “using namespace” globally will cause some problems too. We encountered “
(MSDN)You can use PtrToStringChars in Vcclr.h to convert String to native wchar_t * or char *. This always returns a wide Unicode string pointer because CLR strings are internally Unicode. You can then convert from wide as shown in the following
From MSDNStructs differ from classes in several important ways: Structs are value types (Section 11.3.1).All struct types implicitly inherit from the class System.ValueType (Section 11.3.2).Assignment to a variable of a struct type creates a copy
總結:1. 對於native c++ world來說,Dynamic-Link Library Search Order 說的很清楚了。就是還有一個疑問:如果在任意目錄建立一新folder,把一個application需要的plugin之類的dll及dependency dlls都放在裡面,在load這個plugin需要的dependency dlls時 (If a DLL with dependencies is loaded by specifying a full path, the
1. 什麼是rValue?lValue呢?rValue主要是指沒有名字的變數(即臨時變數/對象);lValue主要是指有名字的變數。除了lValue都是rValue(廢話)。下面的例子可以比較直觀的協助理解:int&& n = 42; // OK; 42 is an rvalue; n is rvalue reference.int k = n; // OK; n is rValue reference and is lValue.int&& j =
FeaturesSMALL! You can compile and execute C code everywhere, for example on rescue disks (about 100KB for x86 TCC executable, including C preprocessor, C compiler, assembler and linker).FAST! tcc generates x86 code. No byte code overhead. Compile, a