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Lim Bio Liong - Professional Profile


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Lim Bio Liong is a Specialist at a leading Software House in Singapore.

Bio has been in software development for over 10 years. He specialises in C/C++ programming and Windows software development.

Bio has also done device-driver development and enjoys low-level programming. Bio has recently picked up C# programming and has been researching in this area.
  • 18 Aug 2006: MFC/C++ Jul 2006
  • 30 Jan 2005: MFC/C++ Dec 2004


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GeneralDeclaring an Interop Struct that contains a character array. PinmemberLim Bio Liong8-Jan-11 5:04 
GeneralCOM SAFEARRAYs - How to use it in C# PinmemberLim Bio Liong25-Sep-10 14:25 
GeneralTroubleshooting Exceptions: System.BadImageFormatException PinmemberLim Bio Liong17-Sep-10 21:53 
GeneralCreating ActiveX Controls in an MFC Application PinmemberLim Bio Liong10-Jan-10 20:26 
GeneralCareful to allocate BSTRs using ::SysAllocString(). PinmemberLim Bio Liong31-Dec-09 20:08 
Note that code like the following :

BSTR bstr = L"My BSTR";

does not allocate a BSTR.

To allocate a BSTR, you must use ::SysAllocString() :

BSTR bstr = ::SysAllocString(L"My BSTR");

Verify this with a call to ::SysStringByteLen() :

UINT uiLen = ::SysStringByteLen(bstr);

In the first case (using merely L), we get uiLen == 0.

In the second case, (using ::SysAllocString()), we get uiLen == 14 (the size of the string "My BSTR" in unicode.

This is because creating a BSTR via ::SysAllocString() generates a proper BSTR with a preceding 4 byte length indicator placed in the memory location just preceding the actual BSTR data.

Code like L"My BSTR" only creates in memory a Unicode string without any preceding 4 byte length indicator.

- Bio.
GeneralAbout X.509 Certificates PinmemberLim Bio Liong31-Dec-09 19:25 
GeneralSome General Points on Array Initialization Part 1 PinmemberLim Bio Liong22-Dec-09 21:25 
GeneralSome Comments on Copy Constructors PinmemberLim Bio Liong21-Dec-09 0:19 
GeneralDefault and Customized Constructors PinmemberLim Bio Liong20-Dec-09 23:54 
GeneralDefault and Customized Constructors (Part 2) PinmemberLim Bio Liong21-Dec-09 0:16 
GeneralGeneric Test HTML Code For Testing ActiveX Objects PinmemberLim Bio Liong19-Dec-09 15:05 
GeneralEnsuring a Safe ActiveX Object to be used inside a Web Page PinmemberLim Bio Liong19-Dec-09 15:02 
GeneralCOM Objects that are created via <object> tags</object> PinmemberLim Bio Liong19-Dec-09 14:59 
GeneralInternet Explorer with Tabs : Debugging a COM Object or an ActiveX inside a Web Page [modified] PinmemberLim Bio Liong19-Dec-09 14:23 
GeneralThe Significance of the "CLSID:" Symbol for the OBJECT Tag's CLASSID Attribute PinmemberLim Bio Liong9-Dec-09 0:24 
GeneralCool use of the #import inject_statement() attribute PinmemberLim Bio Liong4-Dec-09 1:29 
GeneralFailure of javascript usage of MFC ActiveX Control - Part 1 PinmemberLim Bio Liong3-Dec-09 17:31 
GeneralFailure of javascript usage of MFC ActiveX Control - Part 2 PinmemberLim Bio Liong3-Dec-09 17:33 
GeneralFailure of javascript usage of MFC ActiveX Control - Part 3 PinmemberLim Bio Liong3-Dec-09 17:35 
GeneralFailure of javascript usage of MFC ActiveX Control - Part 4 PinmemberLim Bio Liong3-Dec-09 17:36 
GeneralInteresting Info On delete and delete [] PinmemberLim Bio Liong25-Nov-09 18:27 
GeneralInteresting Problem Related to a Temporary VARIANT - Personal Findings - Part 1 PinmemberLim Bio Liong12-Aug-09 23:41 
GeneralTwo Ways To Reference External Types Into An IDL. PinmemberLim Bio Liong16-Jun-09 2:11 
GeneralThe Interface Map of CCmdTarget. PinmemberLim Bio Liong6-May-09 21:52 
GeneralHandling COM Events in an MFC Client. [modified] PinmemberLim Bio Liong6-May-09 21:28 
GeneralDetermine Whether ActiveX is in Design Mode or in Runtime Mode. PinmemberLim Bio Liong30-Mar-09 0:03 
GeneralAsynchronous Interfaces PinmemberLim Bio Liong29-Jan-09 0:03 
GeneralObject Implementing 2 Interfaces with same method names. PinmemberLim Bio Liong19-Jan-09 22:20 
GeneralAsynchronous Interface Implementations PinmemberLim Bio Liong19-Jan-09 0:24 
GeneralVB ActiveX Does Not Support Externally Defined Events PinmemberLim Bio Liong13-Jan-09 18:49 
GeneralVisual Basic COM Objects Shutdown Rules. PinmemberLim Bio Liong29-Dec-08 21:28 
GeneralCOM Spy Applications PinmemberLim Bio Liong29-Dec-08 21:11 
GeneralUsing CRITICAL_SECTION objects inside VB app may cause a crash in MSVBVM60.dll PinmemberLim Bio Liong21-Nov-08 0:23 
GeneralWhy an ActiveX control written in ATL only fires its default event to a VB client. And how to overcome this. [modified] PinmemberLim Bio Liong12-Jun-08 20:18 
GeneralType Library Marshaling PinmemberLim Bio Liong6-Jun-08 4:58 
GeneralOne possible solution to LNK1169 problem. [modified] PinmemberLim Bio Liong8-May-08 4:14 
GeneralRequirements of classes whose objects are stored in containers. PinmemberLim Bio Liong7-Jan-08 20:57 
GeneralAffecting the order of Class Factory Registration in a COM Exe Server. PinmemberLim Bio Liong26-Dec-07 18:32 
GeneralRe: Affecting the order of Class Factory Registration in a COM Exe Server. PinmemberLim Bio Liong3-May-10 1:46 
GeneralGetting the Full Path to a COM DLL PinmemberLim Bio Liong24-Dec-07 20:52 
GeneralThe meaning and use of bind1st() and bind2nd(). PinmemberLim Bio Liong24-Dec-07 20:06 
GeneralCode snippet : GetCustomAttribute() PinmemberLim Bio Liong22-Dec-07 21:51 
GeneralCode snippet : GetTypeLibraryPath() [modified] PinmemberLim Bio Liong22-Dec-07 21:49 
GeneralThe IDL "custom" attribute PinmemberLim Bio Liong22-Dec-07 13:32 
GeneralMemory Allocation And Release PinmemberLim Bio Liong21-Dec-07 23:52 
GeneralWhat Is a "Programming Model"? PinmemberLim Bio Liong18-Dec-07 22:42 
GeneralConcerning making copies of and deletion of objects stored inside VARIANT parameters. PinmemberLim Bio Liong6-Dec-07 20:56 
GeneralThe use of the importlib keyword in an IDL file. PinmemberLim Bio Liong17-May-07 5:12 
GeneralRe: The use of the importlib keyword in an IDL file. PinmemberLim Bio Liong30-Jun-07 22:46 
GeneralPossible For VB to use MTA objects PinmemberLim Bio Liong15-Aug-06 0:44 

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