Tip Bank

Visual Basic lets you test the state of the Shift, Alt and Ctrl keys only within the KeyUp, KeyDown and all the mouse-related event procedures. If you want to test

Variants are the default type of variables that are declared without an As clause, as in: Dim name ‘ this is a variant or are not declared at all (which

When you need to learn if a field has been changed by the user, you have at least three options: you can use a global boolean variable and set it

Visual Basic supports Property procedures to implement properties in your own CLS and FRM modules. However, it turns out that you can use Property procedures even within BAS code modules.

The Timer function returns a value which is only accurate to about 55 milliseconds, therefore it is not very useful for doing accurate benchmarks. If you need a better resolution

Every now and then I forget that the IsMissing function always returns False when the argument is not a Variant value. This happens because IsMissing does nothing more than converting

When you build your ActiveX controls and components, Visual Basic automatically creates all the GUIDs as necessary. The same also happens in other cases, without you even realizing it: for

At times you may need to execute the same block of statements for different values of a variable, but you can’t use a straight For Next loop because the sequence

‘ Return True is a string is made only of spaces, tabs, and Null characters.’ This function is especially useful to test whether fixed-length strings ‘ are initialized.Function IsNullString(Text As