c++-cli

I am trying to figure out how to use the Boost.Preprocessor library http://www.boost.org/doc/libs/release/libs/preprocessor to unfold a "generic" type for different specific types. Below I will ask this for a simple point class example. Given: struct Point##TYPE_SUFFIX_NAME { TYPE X; TYPE Y; // Other code }; I want to generate this type for different basic (POD) data types e.g.: PointF32, PointF64, PointI32 etc. where PointF32 would be: struct PointF32 { float X; float Y; }; That is, based on a list of types: short, int, long, float, double etc. I want to "unfold" the above type for these.

I have a C++/CLI GUI application and I want to display an image as a visual aid for the user to see what step in a procedure they're at. This image will need to be changed each time the user selects the new step. Currently I'm using a picture box and have an image loaded from the disk at run time. So there are a few things I need to know here: Is a picture box the best thing to use for this purpose or is there another control that would better suit? How do embed the images in the executable and load them from there instead of a file that exists on disk. How do I load a new image (I'm guessing

To implement a params(variable arguments) functionality in the managed domain, we do the following in c++/cli such as: funcManaged(int n, ...array<int>^ variableParams) I'm dumbfounded on how to pass this to the unmanaged domain that takes in variable arguments. funcUnmanaged(int n, ...) I tried to pass the array in, but it ended up badly (access violations, junk data, etc). //where unmanagedVariableParamsArray is an int array funcUnmanaged(int n, unmanagedVariableParamsArray); Resources suggest to create a va_list and pass that around, vFuncUnmanaged(int n, va_list vl) But how do I create the

Possible Duplicate: Need to convert String^ to char * I have been looking so long for this solution but I can't find nothing specific. I work in Visual Studio C++, windows forms app. I need to convert String^ value into char array. I have stored value from TextBox in String^ : String^ target_str = targetTextBox->Text; // lets say that input is "Need this string" I need to convert this String^ and get output similar to this: char target[] = "Need this string"; If it is defined as char target[] it works but I want to get this value from TextBox . I have tried marshaling but it didn't work. Is

I have a couple specific questions regarding mixing managed C++ with unmanaged C++: If I leave out ref and value in a class/struct declaration, does that automatically make the class/struct unmanaged? Or do I still need to include the #pragma unmanaged and #pragma managed directives? How compatible are unmanaged and managed types? For example, I can have an unmanaged object in a managed class, right? Can I pass an unmanaged class/struct to a managed function (ie. pass a std::string to a managed function)? Thanks for your help, Alex You can't have hybrid types (native class containing a managed

I'm currently wrapping a C++ class with C++/CLI for .NET interoperability following the standard process of holding a native pointer in a managed class. In one instance, I have a native class that has a function like: std::shared_ptr<BaseChannel> channelData(const int RunNumber); I have already begun creating a wrapper class for BaseChannel . However, if I pass the raw pointer to the constructor of the managed class, there are no guarantees on the lifetime of the object being pointed to by the managed class. I.e. the shared_ptr could go out of scope and the object will get deleted and the