I.T. Notes

Hi, DISP_FUNCTION_ID : You should define dispatching map for any method in ActiveX to be used for COM. If the map is not set correctly,Method will not be seen anymore. DISP_FUNCTION_ID gets 6 parameters.These are; 1-class,method belongs to 2-External Method name,value can be method name 3-Dispatch id of method,unique number 4-Method 5- Return value should be one of VARENUM in wtypes.h 6- Parameters value defines in afxdisp.h (space is seperator of each params) for example; DISP_FUNCTION_ID(C_X_OleLibraryCtrl, "GetIDLMsg", 1, GetIDLMsg, VT_BSTR /* return type*/, VTS_PVARIANT VTS_BSTR /* two parameters are seperated by empty*/) good luck, P.S. If you have any comments please do not hesitate share.

if you get errors while linking compiled code and making project output file (such as .exe,.dll) in MVC++ with subject of "error LNK2001: unresolved external symbol and error LNK1120: 1 unresolved externals",It seems there is missing library definition in addition if the message is related with "DEFINE_GUID" ,There is unordered including headers. Please check belows; 1-Check all headers that may use,are included 2-Check directories of referenced files are set in project (Right Click to Project in Micosoft Visual Studio 2010>Properties>Configuration Properties>VC++Directories and 3- check Libraries dependencies (Right Click to Project in Micosoft Visual Studio 2010>Properties>Configuration Properties>Linker>Input>Additional Dependencies) 4-Please follow the exact code and if it is about "DEFINE_GUID", initialize GUID (#include ) before include any project based headers. ( http://support.microsoft.com/kb/130869/en-us ) obtains d

Hi, if you create Windows From Application based on C++ environment in Microsoft Visual Studio 2010.You will not use Intellisense. you will face a good message : 'IntelliSense unavailable for C++/CLI' But do not worry,You can look for 3rd party tools.There are great tools to help you. regards, P.S:Please do not hesitate to share your comments.

Selam (Hi in Turkish), if you get an Error : 'error C2065: 'CW2A' : undeclared identifier' in your C++ project(either ActiveX) while compiling the line which is included COLE2T statement (#define COLE2T CW2T in atlconv.h). please check below within your project; 1- Be sure that your project is supported by ATL (if it is ActiveX). To prepare your project for working with ATL , just add class via right click of Project in Microsoft Visual Studio Solution Explorer and select add>class>'Add ATL Support to MFC'.Visual Studio will set up the current project. 2- use statement with ATL:: prefix ( ATL::COLE2T lpszIID(lpszOleIID) ). Gule Gule (Bye Bye in Turkish). P.S:Please do not hesitate to share your comments.

If you get an error while importing IDL into COM (dll) by midl command. check; -dll file is not read only -dll file is not used by other aopplications -Each GUI should not obtain { or } in IDL file. Good Lucks... P.S:Please do not hesitate to share your comments.