VB 6.0 - Sub-Classing Samples
Sub-Class Your Form to Intercept Window's Messages
Hook into the Window's message stream. Trap messages and react to or ignore
events not normally available in Visual Basic. Learn the difference between
subclassing and setting hooks.
Sub-Classing TextBox Controls
Stop adding the same code over again to all your textboxes. Subclass the
textbox and use Multicasting to create a textbox
object that consolidates your code into one location. Then create as many
instances of the textbox object as needed. All will inherit the same behavior.
Sub-Class Textbox & Combobox Controls
Learn how to replace the context menu that is displayed when you right click on
a textbox with your own popup menu.
Numeric/Uppercase TextBox with Undo Capabilities
Subclass TextBoxes so they only accept characters 0 through 9 or Uppercase
letters. Add Undo capabilities to textboxes
relieving you of the need to detect and track changes.