Tip Bank

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Never mix SingleUse and MultiUse classes

ActiveX components written in VB can contain both SingleUse and MultiUse classes at the same time. It usually isn’t a good idea to use both types of classes in the

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Compound member attributes

The Procedure Attributes dialog includes a Procedure ID combo box, that lets you associate a particular ID to a given member of the class. You usually use this combo to

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Dragging caption-less forms

The standard way to move a captionless form is to execute some tricky code from within the MouseDown event procedure. More advanced VB developers can reach the same result by

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Prevent IE5 AutoComplete on Your Forms

One of Internet Explorer 5.0’s new features is AutoComplete. If turned on by the user (it’s off by default) it helps users fill in the frequently used fields–like username, first

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Duplicates in a Swing ComboBox

Swing’s JComboBox can be used to present a drop-down list, perhaps of status reports from a process, requiring minimal screen space until the user wishes to see the details. But

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Determine Transaction Isolation Levels

When architecting a client-server or n-tier application, you should decide on a particular locking technique and accordingly the transaction isolation level and concurrency control strategy for database transactions. This decision

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Don’t Forget That Mouse Pointer

If you turn the mouse pointer into an hourglass (and back to normal) in a routine with error handling, don’t forget to turn the mouse pointer back to normal in