By Marcia Akins, Andy Kramek, Rick Schummer, John Hosier
If you are going to take advantage of VFP for greater than informal GUI alterations in your application, this e-book is a wealth of information. Concise, in-depth, and a beautiful addition for your assortment.
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Extra resources for 1001 Things You Always Wanted to Know About Visual FoxPro
EMPTY( lcOption ) luRetVal = SET( lcOption ) ENDIF RETURN luRetVal ENDPROC ENDDEFINE To use this class, simply add the following code to the Load method of your Form class: 18 1001 Things You Always Wanted to Know About Visual FoxPro *** Add object to set environment (suppress any display explicitly) SET TALK OFF IF ! g. the GetOption() method outlined above) can be accessed. How do I get rid of the system toolbars? When you start Visual FoxPro, one or more of the system toolbars will normally be visible.
And, if found, activates the original and returns a flag. Caption = lcTitle *** Check the results IF lnHWND > 0 *** We have found something! T. ENDIF *** Return Status for action RETURN llRetVal The function returns a logical value that can be used to determine whether to allow the current application to continue, as the following snippet illustrates: *** Check for a second instance of the application IF OnceOnly() QUIT ENDIF There is one major drawback to watch out for here. Caption. If your application changes the Caption of the screen at run time (as many do), this approach will not work.
In fact it is actually quite simple since you cannot, in Visual FoxPro, either create or modify an "Event", only the method code "associated WITH that event". What this means is that accessing the "