Here is a tip that should make life simpler for all VB programmers doing mixed 16/32-bit development in VB4 under Windows 95. I have three additional items in my project

The tip you published on page 70 of the September 1996 issue of VBPJ on “Validating Numeric Input” was a good tip. However, the function failed to take into account

I use a housekeeping routine to check the state of tables during system initialization. The routine tests whether the table is in a collection, whether the table has data, and

To put a combo box on a toolbar, create a place holder and positionthe combo box above the place holder in the z-order. You can’t place thecombo box inside the

Need a fast way to print only one sub or function in VB3 that also takes care of the problem some printers have in printing the last page?Create a small

In VB3, the PostMessage API can cancel an error during Form_Load. Theform unloads if you send a WM_CLOSE message to the loaded window in theerror handler of the Form_Load routine.

To draw a selected transparent image in VB4 from an Imagelist control,as you do in C++, follow these steps. The ImageList_ API functions have many features that weren’t passedthrough in

Do you need to convert user input to all upper case in VB3? All the ways I have seen to force user input to all upper case is to make

To test whether a date falls on a weekend, you might be inclined to do this: nDay = weekday (sDate)If (nDay = 1) or (nDay = 7) Then ‘It’s a

These two routines enable you to get the height of an item of a list box in terms of pixels, and they also enable you to set the height of

Creating an object that looks and acts like a collection is a good wayto implement a form of inheritance in VB4, where inheritance is not providedby the language. Creating properties

In many places, I include Error$ as picked up in an error trap in a descriptive message. I use a function to expand its meaning. I call the function TSS

Assume that you have the full path name of a file, and you need to beable to tell if the drive is writeable (that is, if it is a CD-ROM

While developing MDI applications in VB 4.0, you probably have noticed that the cursor on the MDI child disappears when you click on the toolbar on the MDI parent. You

Microsoft is currently working on a printing problem. Visual Basic 3.0 applications running in Windows 95 cannot print to shared printers with an embedded space. If a shared printer has

The StartMode setting in the Options dialog of the Tools menu in VB4determines only whether an application with no startup form continues torun after Sub Main has completed. This allows

When in NT or Windows 95, use the Sleep API function instead of DoEvents.DoEvents does this: while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) { TranslateMessage(&msg); DispatchMessage(&msg);} DoEvents spends part of its

Add a method in VB 4.0 to center your forms against the screen or aparent form. Create a new project with two forms. Add this code to Form2: Public Sub

Use the Tools-Custom Controls dialog instead of Tools-References toremove controls. The project file will show references to all custom controlsin the project’s toolbox, even if they are not used by

Add Optional parameters to your procedure calls. Both Functions and subs can now use the Optional keyword in the declaration to indicate that the following parameter is optional: Function mfbCheckDBStatus(Optional

To line up controls on a form in VB4, select all the controls you want to line up. Press F4 to bring up the properties window. Then double-click on the

Working with control arrays in VB3 was frustrating, but with VB4 youcan pass a control array as an argument to a function. Simply specify theparameter type as Variant: Private Sub

How many times have you wished field objects had a “RequiredIfCondition1″or other user-defined property? You can add one easily: Set NewProperty = Field1.CreateProperty(“FieldNote”)NewProperty.Type = dbTextField1.Properties.Append NewProperty

In many applications, I want to make absolutely sure that the data in a Jet table doesn’t get modified under any circumstances. I hard-lock the table in addition to using

Have you ever wanted to push a variable onto a form without using atag? Property functions let you create custom properties for forms or classmodels. Use PropertySet, PropertyGet, and PropertyLet

You have a VB4-based OLE Automation server that has no main UI, anddisplays forms that are parented into Excel in response to various automationcalls. Sometimes you need to display a

Use the Tag property and the MouseMove event to create “tag tips”which look like tool tips. Create a label to be used as the tool tipbox and set its visible

In Windows 95, only the VB windows with the property ShowInTaskbar setto True are minimized if you select Minimize All Windows from the taskbar context menu. This is the way

Don’t set the MousePointer in an OLE DLL unless absolutely necessary. The in-process OLE server can not retrieve the current mouse pointer, so there is no way to set it