What type of multi-threading does VB6 implement?
Apartment model threading Read more »
Archive for April, 2007
How does a DCOM component know where to instantiate itself?
To create a remote instance of a script component, call the CreateObject method, passing it the name of the remote computer as a parameter. If the remotable attribute... Read more »
How can you force new objects to be created on new threads?
The CreateThread function creates a thread to execute within the virtual address space of the calling process. To create a thread that runs in the virtual address... Read more »
How can objects on different threads communicate with one another?
Processes communicate with one another through messages, using Microsoft’s Remote Procedure Call (RPC) technology to pass information to one another. There... Read more »
Version |Year |Significant Changes and New Features of Visual Basic?
1 1991 initial release, with drag and drop GUI creation 2 1992 ODBC, object variables 3 1993 Access Engine, OLE 2.0, Crystal Reports, new tools and controls 4 1995... Read more »
Difference Declaration and Instantiation an object?
Dim obj as OBJ.CLASS with either Set obj = New OBJ.CLASS or Set obj = CreateObject(?OBJ.CLASS?) or Set obj = GetObject( ,? OBJ.CLASS?) or Dim obj as New OBJ.CLASS Set... Read more »
Difference Query unload and unload in form?
Occurs before a form or application closes. When an MDIForm object closes, the QueryUnload event occurs first for the MDI form and then in all MDI child forms. If... Read more »
Difference Object and Class?
Classes and objects are separate but related concepts. Every object belongs to a class and every class contains one or more related objects. 1)A Class is static.... Read more »
Difference modal and moduless window?
MODAL forms are forms which require user input before any other actions can be taken place. In other words, a modal form has exclusive focus in that application... Read more »
Difference Listindex and Tab index?
LIST INDEX:: Returns or sets theindex of the currently selected item in the control. Not available at design time.Default LIST INDEX IS -1 for ComboBox, DirListBox,... Read more »
Difference between Dynaset and Snapshot?
All Recordset objects are constructed using records (rows) and fields (columns). There are five types of Recordset objects: Table-type Recordset :: representation... Read more »
Difference between listbox and combo box?
A LISTBOX CONTROL displays a list of items from which the user can select one or more. If the number of items exceeds the number that can be displayed, a scroll... Read more »
Difference between Linked Object and Embedded Object?
Embedding objects - When you embed an object, a copy of the object is inserted into the destination document. There’s no link to the original file. When you... Read more »
Difference between a function and a subroutine ?
A function accepts any number of parameters (possibly zero), does something with them, and returns a value. A subroutine is performs an action, but doesn’t... Read more »
Describe Database Connection pooling relative to MTS ?
This allows MTS to reuse database connections. Database connections are put to ?sleep? as opposed to being created and destroyed and are activated upon request. Object... Read more »