Serializing a Polymorphic Object
January 4, 2002
A polymorphic object has one or more virtual functions. When you serialize such an object to a file so that it can be reconstituted later, the deserialization might rewrite its
A polymorphic object has one or more virtual functions. When you serialize such an object to a file so that it can be reconstituted later, the deserialization might rewrite its
To write the binary value of a variable to an output file stream (ofstream) object, use the write() member function. write() takes two parameters: const char * and long, which
‘ A class that creates UDL files for use as ADO Data Sources.’ Universal Data link files are handy for select data sources but there’ are lack of a way
To create a drop-down control with a list of used or unused drive letters, place two ComboBox controls on a form, named Combo1 and Combo2, and include this code to
When running action queries make sure you add the adExecuteNoRecords option, so that a recordset is not created. You can also use this technique in lookup situations when returning just
When using the SSTab control to build a tabbed dialog, I often find the design more pleasing when the OK/Cancel buttons or other controls appear on every tab. It
This script can be used in ASP or VBScript or Visual Basic. It is an easy way to create a folder tree. Sub CreateFolderTree(ByVal FolderName) Dim objFSO Dim InterminPath Dim