can anyone tell me ... if I create an MFC DLL in C/C++, is there a way to determine which application is calling a given dll function?e.g. double _stdcall samplefunction(){if application calling this function = "a" then return 1else if application calling this function = "b" then return 2return 3}

Have you looked at GetStartupInfo () ?The lpTitle field should do nearly[/i[] what you want.

GetModuleFileName(-1, yourBuffer, sizeOfYourBuffer) returns the path to the EXE loading your DLL.

Sorry

Sorry I am the only one having problems with the forum?

What sort of problem ?

I think its the old "one post gets you three" problem. Otherwise, I think we got rid of most of our "problems" back in April or May ....

Problem? What Problem... Press reply, get an error, hit refresh, get another one, go back, hit replay again.... That makes three posts.And re: the original question: It should be noted that the process can always choose to let the DLL have the wrong information...

When's the next jamboree?would 20 January be possible?BTW thanks for the greta evening last Thursday.

No one can accuse Wilmott.com of short-changing you on your posts

My question is a little different.Let's say I have a Excel Spreadsheet which call a C++ dll (xll) whatever.1) I have the codes for the dll/xll (generated by an analtyic tool)2) The spreadsheet pass some parameters to this dll/xll to compute the option price & greeks.Is there a way for me to debug the .dll via the spreadsheet ?If yes, can u pin down for me exactly the stepsI am using Excel 2000 (Office 2000) and Microsoft VC++ 7.0Cheers mate,Mr. M.

The best way is to specify the executable in VC++Make sure you use thge full path for the Excel.exe, dir /b /s should do the trick.Doesn't matter which version of Exce you're using because the debugger treats it as just another exe.

heres a step by step .. I am assuming you are using VC++ 1. build your dll in debug mode2. from the VC IDE, go to Project|Settings and select the Debug tab. In the Executable box click on the right arrow and browse to where your Excel executable is (usually C:\Program Files\Microsoft Office\Office) and select the EXCEL.EXE. OK all the way back.3. Now press F5 (to start the debugger) this will launch EXCEL and then from there on load your dll as usual and your excel sheets as usual. Now set a few break points where you want to stop.HTH

thanks mate, will try it on Monday...

Hi, I am using VC++.Net now. After selecting EXCEL.EXE as the excutable file and press F5, there is an error message:No symbolic Information'EXCEL.EXE' does not contain debugging information. (No symbols loaded) Click OK to debug anyway. If I click OK, it will generate a new workbook for me. My knowledge about VC.Net is limited. Currently I wanna code in C++ and call dll from VBA.My code in VC++:EXTERN_C void WINAPI MyFunction (LPSAFEARRAY* Array1, LPSAFEARRAY* Array2, double a, double &output ) { ... }Function declared in VBA:Declare Sub MyFunction Lib "MyPath\Debug\MyProject.dll" _ (array1(), array2(), ByVal a As Double, ByRef output As Double)I have built the solution, so I can find "MyProject.dll" under "Debug" folder. But I can't run MyFunction in VBA and can't debug it through VBA. Any guidance?Chris