An Improved User Tip

An Improved User Tip

The User Tip submitted by Nick Bulka in the January 1996 issueof VBPJ was interesting, but, as with so much code, improvable:

 Sub TextHiLite( t as TextBox )                t.SelStart = 0                t.SelLength = len(t)End Sub

My improvement is to pass the TextBox control as a parameter.When VB passes a control as a parameter, it passes the Referenceto it, not a copy of it. With the Reference available, you canchange the properties and so forth without the time and resourceoverhead of declaring and instantiating a new object. Besides,it could be appropriate to change some characteristic for a controlthat does not have the focus. By passing it as a parameter, theprogrammer is not restricted to the active control.

VB3 can be lax about cleaning up after its objects. Several VBPJarticles suggest doing clean-up. This little routine I putin all my

_Unload events really helps keep the resourcesin check:
                 If  Is _                        Nothing then                Else                                Set  = _                                        Nothing                End If

This modification is for database result-set (tables, dynasets,and so forth) objects. The code is more straightforward to createand to read with an empty ‘Then’ section and going right to Else:

                 ' It's time to close the object:                If  Is Nothing _                        Then                Else                                ..Close                                Set  = _                                        Nothing                End If

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

About Our Journalist