Difference between revisions of "Code samples"

Revision as of 22:06, 15 December 2005

Below are a selection of VB code samples. Feel free to use any of them in your own projects.

COM objects

• Firing events in an object from a code module
• Modularised Subclassing using interfaces and CopyMemory
• Creating singleton objects

File handling

• File I/O. Reliably
• Getting special folder paths
• How to iterate through a directory structure using APIs
• Working with INI files in .NET

Networking

• How to get a list of the network adapters on the system

Strings

• Creating unique IDs (GUIDs)

User interface

• Creating and using control arrays
• How to Catch Mouse Hover and Out Events
• How to catch KeyPresses on a form when a control has focus

Graphics

• Introduction to GDI drawing
• Drawing with a backbuffer
• How to draw an image to a DC with GDI
• All about StretchBlt

Look & Feel

• XP Styles in your application
• Creating a transparent control in .NET
• Using Tab controls in your applications

Text boxes

• Allowing numeric values only
• Scrolling chat windows

Windows

• Making a window "Always on top"
• Dragging windows/controls the easy way
• How to create a tool window that floats above your app
• How to subclass a window to catch useful windows messages
• Modularised Subclassing using interfaces and CopyMemory

Variables

• How do you tell if a number is an integer?
• Obtain the type name for a variable
• Pass a user defined type to a class

Miscellaneous

• Open a URL in a web browser
• Sleeping without locking up the program (uses DoEvents)
• Why DoEvents can cause problems
• Detecting the version of Windows
• How to close your app without using End