Get Advanced Microsoft Visual Basic 6.0 2nd edition PDF

By Sean P. Alexander (Foreword)

ISBN-10: 1572318937

ISBN-13: 9781572318939

Within the authors' phrases, "Our major goal in penning this booklet is to put in writing the main complex ebook but to be had on Microsoft visible Basic." Written from the point of view of the pro visible simple developer, "Advanced Microsoft visible easy, second version" explores all of the percentages open to a developer utilizing visible uncomplicated as his or her basic client/server improvement software. New to this version is fabric on new info entry applied sciences, accessibility matters for the bodily challenged, elevated aid for IIS, BackOffice and combined language programming, and company help for server part items, equivalent to the part gallery and Microsoft Transaction Server. The accompanying CD-ROM includes pattern code and important utilities built and proven by means of the authors, The Mandelbrot Set.

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Additional info for Advanced Microsoft Visual Basic 6.0 2nd edition

Sample text

InDesign is to turn off your own error handling altogether. Now I know that Visual Basic allows you to Break On All Errors, but that's rarely useful, especially if you implement delayed error handling. InDesign Then On Error GoTo ... The reason for this is that one of the last things you want within the IDE is active error handlers. Imagine you're hitting F8 and tracing through your code. I'm sure you know what happens next—you suddenly find yourself in an error handler. What you really want is for Visual Basic to issue a Stop for you on the erroring line (which it will do by default if you're using the IDE and hit an error and don't have an error handler active).

So what must we do to put a good error handling scheme in place? It's a deceptively simple question with a big (subjective) set of answers. I think that acquiring and then using some fundamental knowledge is where we should start: Ensure that all your developers truly understand how Visual Basic raises and then dispatches and handles errors. Make sure that those same developers understand the consequences of writing code that is hard to debug and the true costs of any unhandled error. Develop a suitable error handling strategy that's based on your understanding of the preceding two points and that takes into account your budget and line of business.

One nifty way to log error events (or any other event you might consider useful) is to use the App object's LogEvent method, which logs an event to the application's log target. LogPath property. LOG. LogMode are not available at design time and are available as read-only at run time, so how do you set them? StartLogging. LogEvent is available only in a built executable—not very useful for debugging in the Integrated Development Environment (IDE)! Now the good news: you can improve on this behavior by using the Win32 API directly from your application to log events to the NT Event Log (under Windows NT) or to a file (under Windows 9x).

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Advanced Microsoft Visual Basic 6.0 2nd edition by Sean P. Alexander (Foreword)

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