Check out this little MSDN sample: Obtaining a File Name From a File Handle. Enjoy! Ian Mariano - http://www.ian-space.com/ "We are all wave equations in the information matrix of the universe" - me

Sounds like you be being a victim of "Name mangling". This is something the C++ compiler does so that overloaded functions with the same name but different parameters can be properly resolved by the linker. You can force the compiler to turn of "Name mangling" for a specific function by using extern "C" in the function declaration. extern "C" int funcNoUse(long lRegionID, long nPoints, float* pY, LPCTSTR szFlags, int makeCopy) Roger Allen - Sonork 100.10016 Roger Wright: Remember to buckle up, please, and encourage your friends to do the same. It's not just about saving your life, but saving the quality of life for those you may leave behind...

DevPartner Profiler[^]. Works with most VS.NET languages.

You could use a quick and dirty method of naming the file something other than .EXE and then have your program rename the file before invoking it. Have you answered an MTQ? Check out the stats!

The easiest method of getting the available rectangle that you can use to position your modeless window is like this: CRect rcAvailable; RepositionBars(0, 0xffff, AFX_IDW_PANE_FIRST, reposQuery, &rcAvailable ); rcAvailable then contains the client rectangle without the toolbars. Hope this helps.

Check out AdjustWindowRectEx() --Mike-- Ericahist [updated Oct 26] | CP SearchBar v2.0.2 | Homepage | RightClick-Encrypt | 1ClickPicGrabber Pinky, are you pondering what I'm pondering? I think so Brain, but if we shaved our heads, we'd look like weasels!

Hi novachen, I dont know why this is happening, but to explicitly break at some point, instead of using a breakpoint, try using System.Diagnostics.Debugger.Break(); Do let me know if it helps.. Cheers, Rahul I do not understand what I do. For what I want to do I do not do, but what I hate I do. - Romans 7:15

(IntPtr) yourrefint leppie::AllocCPArticle("Zee blog");

In fact, i am working on a tiled image application, each tile sometime need several rows or columns of data in nearby tile. This is the reason i write the tester. In this situation, you will find 1024 is not a good selection, even you create a matrix with side of 1025 (but not use the extended 1 pixel) will work better than exactly 1024. I think i didn't turn on any special optimization. Just use the default release option as console in vs7. I also copy my tester to other pc. The result is almost the same. PS. my Os is win2k, CPU is P4 1.7G, Memory 512M

Assuming you are using Windows 2000 (and probably XP), open the System applet in Control panel. Click on the Advanced tab. Click the Environment Variables button. You can do the same thing with Windows 9x, but I'm not familiar enough with the UI to say.

1. Don't supply a coclass for A in the IDL 2. Remove A from your object map in the main CPP file for the project However, you will need to make sure that the interfaces that object A provides are declared in the library block of your IDL file, or it won't 'publish' the interfaces in the TLB/DLL. Steve S

You cam 1. Make Apple only creatable by Banana 2. Tag each Apple instance with a GUID, that can be queried through the IApple interface 3. Keep a map<GUID, CApple *> to retrieve the CApple * belonging to an IApple * 4. Reject each IApple you get that you don't know. I have a slightly simpler case, that uses a slightly simpler implementation: Noone passes an IApple back to me (I just hand it out), and the apple doesn't have any state that can't be dereived from Banana. So I let the Banana implement the methods of Apple and make the IApple implementation forward the calls to it's Banana. Some care with avoiding circular ref's is all to take care of. "Der Geist des Kriegers ist erwacht / Ich hab die Macht" StS sighist | Agile Programming | doxygen

Firstly, when posting code to CodeProject, it's useful to use the <pre> format tag. You should also translate < to &lt; and > to &gt;. Alternatively select the 'Display this message as-is (no HTML) checkbox). Otherwise CP interprets template parameters and system includes as unknown HTML tags and removes them. Now for the problem: System.ExecutionEngineException, according to the documentation, is only thrown when an internal problem occurs in the runtime itself. The problem seems to be occurring when the Interop layer tries to call QueryApple. It never actually gets into the C++ module. I'll have to confess, I'm not an expert on Interop. I think you need actual support from MS on this one.

Thanks! I wanna ask for a little more. In Apple i try to hide a struct. It is not on the interface to the client. But the other class in the COM know it is there, and can access it. in apple.h struct Image { int num; }; // CApple class ATL_NO_VTABLE CApple : public CComObjectRootEx, public CComCoClass, public IDispatchImpl { public: Image img; CApple() { } The banana add a method interface IBanana : IDispatch{ [id(1), helpstring("GetApple")] HRESULT GetApple([out,retval] IApple** apple); [id(2), helpstring("QueryApple")] HRESULT QueryApple([in] IApple* apple, [out,retval] int * ret); }; And in banana.cpp i try STDMETHODIMP CBanana::GetApple(IApple** apple) { CApple* p = new CComObject(); p->img.num = 100; *apple = p; return S_OK; } STDMETHODIMP CBanana::QueryApple(IApple* apple, int* ret) { CApple* p = dynamic_cast(apple); *ret = p->img.num; return S_OK; } But when i use this dll in c#, it always get a System.ExecutionEngineException. the script is FruitLib.Banana banana = new FruitLib.BananaClass(); FruitLib.Apple apple = banana.GetApple(); int n = banana.QueryApple(apple); Any idea then? Thanks!

put __asm{ int 3 }; at the beginning of the code! when the exception is raised, attach visual studio debugger to it, voila Don't try it, just do it! ;-)