Use C ++ to write COM components and use C # To call

Use C ++ to write COM components and use C # To call

1,It is especially important to open vs as an administrator. Otherwise, it will fail.

2. Create a c ++ ATL project, all of which are set by default.

3. Add an ATL simple object and add it from the add class,

4. Add a method. Note that the method is added to the Class View, and the rest are default.

5. Add the code to the test. cpp file to generate the code. A com component is created. <Strong? Http: www.bkjia.com kf ware vc "target =" _ blank "class =" keylink "> VcD4NCjxwcmUgY2xhc3M9 "brush: java;"> STDMETHODIMP Ctest: Add (LONG a, LONG B, LONG * c) {// TODO: Add the implementation code here * c = a + B; return S_ OK ;}

6. Add reference in c # To the generated dll file path.

Reference:

7. Add and run the code

Using System; using System. collections. generic; using System. linq; using System. runtime. interopServices; using System. text; using ATLProject1Lib; namespace csharpMatlab {class Program {static void Main (string [] args) {test a = new test (); Console. writeLine (. add (4, 7 ));}}}