Tip Bank

A severe bug in VB4 appears when using the Databound Grid withmodal forms. Create 3 forms: form1, form2 and form3. Put a buttoncommand1 on each of the forms. In the

In VB4, each control array is its own collection and thereforehas a Count property. This was not the case in version 3. It isnow possible to loop through all of

When a procedure can operate on multiple types of controls, youcan use VB’s TypeOf function to determine a control type at runtime: Function myFunc(ctl as Control) ‘ This code works

Properly designed Windows programs should change their own colorsaccording to the system colors. One of the reasons why developerstend to forget that part of design is that it is not

Jet 3.0 includes an undocumented feature that lets you log Jet’soptimization plan of queries. To enable this feature, you mustcreate this registry key using Windows’ RegEdit program: HKEY_LOCAL_MACHINESOFTWAREMicrosoft _ Jet3.0EnginesDebug

This need was established by developing VB applications for 3270mainframe apps. A user typing in a 3270 edit field is automaticallyplaced into the next field once reaching the maximum number

When you write an If statement such as: If Category = “CM” or Category = “M2” or Category = “P1” or Category = “ZZ” thenProcessEmployeeEndif it can be simplified by:

If you have to assign True or False to a variable after testinga certain condition, then the If statement may be done away withaltogether. For example, if you have something

Most collections are zero-based. The COUNT property returns thenumber of members of a collection, as opposed to the highest membernumber. So when we see code that loops through all the