Virtual Function Tables

A virtual function table is an array of pointers to the methods an object supports. If you're using C, an object appears as a structure whose first member is a pointer to the virtual function table (lpVtbl); that is, the first member points to an array containing function pointers. The methods all take a pointer to the function table as the first parameter. Thus, the following example calls the Read method of a pStream object:

pStream->lpVtbl->Read(pStream, parameters)

In C+ +, the pointer to the virtual function table, the this pointer, is implicit. The following is equivalent to the previous example when using C+ +:

pStream->Read(parameters)

Software for developers

Delphi Components
.Net Components
Software for Android Developers

More information resources

MegaDetailed.Net
Unix Manual Pages
Delphi Examples

Databases for Amazon shops developers

Amazon Categories Database
Browse Nodes Database