That helps alot Asa, now I understand why I see that people use classes when working with Userforms. I can also use them when working with objects such as charts. As far as what I read online, the subs should dictate the flow of the program and the classes should manage the individual objects such as charts, userforms. Sorry to be a pest...final question... If I wanted to create a mini program that shows data from an excel database would classes be useful?. For example, If I had a userform, and wanted to scroll and select someones name...and then in other boxes within the userform it will show their street, zip code, and country... can each one of those fields use a class? I'm trying to gain applicable examples to help gain an understanding. I have been using a few books for reference... but your explanations have helped me jump the learning curve... Matt On Wednesday, April 11, 2012 5:00:08 PM UTC-4, Asa R. wrote:
> The reason you can't call a method (sub or function member of a class) > directly is because the object defined by the class doesn't exist until you > create it with the NEW keyword (or CreateObject - but usually you should > use NEW). > > > > It doesn't exist for a reason - each time you use the NEW keyword you > create a unique entity - that object is an individual., and the variables, > methods, properties, etc. of that object have their own scope. a CLASS is > a "class of object". If you imagine a class called PERSON, it might have a > property called "First Name" and another called "Last Name". If you could > access those properties without "instantiating a class" (creating an > instance of the class, i.e. a new object based on it) every PERSON in the > world would have to have the same name (and everything else about them > would have to be the same, and they would have to behave the same.). > WORKSHEET is an example of a built-in class. You can't refer to it's > properties and methods unless you refer to a specific worksheet object. > Excel automatically creates WORKSHEET objects worksheets are added to the > workbook, and disposes of them when they're removed. > > > > You can find some tutorials for classes online, such as: > > http://www.cimaware.com/resources/article_39.html > > http://www.cpearson.com/excel/classes.aspx > > > > Asa > > > > *From:* excel-macros@googlegroups.com [mailto: > excel-macros@googlegroups.com] *On Behalf Of *Matt > *Sent:* Wednesday, April 11, 2012 6:21 AM > *To:* excel-macros@googlegroups.com > *Subject:* Re: $$Excel-Macros$$ Call a Function > > > > Yes, I moved it to another module and I believe I had an older copy of > that code in a different module as well and that was a problem too. > > > > I've been trying to understand classes (I know they create objects) and > their use, thats why I originally used the "class module" though. > On Tuesday, April 10, 2012 9:53:09 PM UTC-4, Asa R. wrote: > > Hi Matt, > > Glad to help. What was your solution? Moving the functions to a standard > module instead of the class module? > > > > Asa > > > > *From:* excel-macros@googlegroups.com [mailto: > excel-macros@googlegroups.com] *On Behalf Of *Matt > *Sent:* Tuesday, April 10, 2012 6:03 PM > *To:* excel-macros@googlegroups.com > *Subject:* Re: $$Excel-Macros$$ Call a Function > > > > Thanks Asa. Your advice helped! I thought I tried it before but I guess I > missed something and it works now. > > > > Tx again' > > > > Matt > > On Thursday, April 5, 2012 3:27:51 PM UTC-4, tag wrote: > > please see... > Sub or Function not defined (Visual Basic) > > A *Sub* or *Function* must be defined in order to be called. Possible > causes of this error include: > > · Misspelling the procedure name. > > · Trying to call a procedure from another project without > explicitly adding a reference to that project in the *References* dialog > box. > > · Specifying a procedure that is not visible to the calling > procedure. > > · Declaring a Windows dynamic-link library (DLL) routine or > Macintosh code-resource routine that is not in the specified library or > code resource. > To correct this error > > 1. Make sure that the procedure name is spelled correctly. > > 2. Find the name of the project containing the procedure you want to > call in the *References* dialog box. If it does not appear, click the * > Browse* button to search for it. Select the check box to the left of the > project name, and then click *OK*. > > 3. Check the name of the routine. > > 2012/4/5 ChilExcel <chilexcel...@gmail.com> > > Please attach example, to better understand > > > > > > Chilexcel > > 2012/4/5 Matt <moni...@gmail.com> > > Hello, I'm trying to call a public function in one module from another Sub > procedure in another module and it won't call the the function. I get an > error that says.."sub function not defined" But when I include the function > within the same module, my code works... > > > > I can't seem to find the answer online... > > > > > > What is the problem? > > Thanks again for your help. > > > > Matt > > -- > FORUM RULES (986+ members already BANNED for violation) > > 1) Use concise, accurate thread titles. Poor thread titles, like Please > Help, Urgent, Need Help, Formula Problem, Code Problem, and Need Advice > will not get quick attention or may not be answered. > > 2) Don't post a question in the thread of another member. > > 3) Don't post questions regarding breaking or bypassing any security > measure. > > 4) Acknowledge the responses you receive, good or bad. > > 5) Cross-promotion of, or links to, forums competitive to this forum in > signatures are prohibited. > > NOTE : Don't ever post personal or confidential data in a workbook. Forum > owners and members are not responsible for any loss. > > > ------------------------------------------------------------------------------------------------------ > To post to this group, send email to excel-macros@googlegroups.com > > > > -- > > Visita ; http://sites.google.com/site/chilexcel/Home > > Visita ; http://www.youtube.com/user/timextag41 > > > > > > > -- > > Visita ; http://sites.google.com/site/chilexcel/Home > > Visita ; http://www.youtube.com/user/timextag41 > > > > -- > FORUM RULES (986+ members already BANNED for violation) > > 1) Use concise, accurate thread titles. Poor thread titles, like Please > Help, Urgent, Need Help, Formula Problem, Code Problem, and Need Advice > will not get quick attention or may not be answered. > > 2) Don't post a question in the thread of another member. > > 3) Don't post questions regarding breaking or bypassing any security > measure. > > 4) Acknowledge the responses you receive, good or bad. > > 5) Cross-promotion of, or links to, forums competitive to this forum in > signatures are prohibited. > > NOTE : Don't ever post personal or confidential data in a workbook. Forum > owners and members are not responsible for any loss. > > > ------------------------------------------------------------------------------------------------------ > To post to this group, send email to excel-macros@googlegroups.com > > -- > FORUM RULES (986+ members already BANNED for violation) > > 1) Use concise, accurate thread titles. Poor thread titles, like Please > Help, Urgent, Need Help, Formula Problem, Code Problem, and Need Advice > will not get quick attention or may not be answered. > > 2) Don't post a question in the thread of another member. > > 3) Don't post questions regarding breaking or bypassing any security > measure. > > 4) Acknowledge the responses you receive, good or bad. > > 5) Cross-promotion of, or links to, forums competitive to this forum in > signatures are prohibited. > > NOTE : Don't ever post personal or confidential data in a workbook. Forum > owners and members are not responsible for any loss. > > > ------------------------------------------------------------------------------------------------------ > To post to this group, send email to excel-macros@googlegroups.com > -- FORUM RULES (986+ members already BANNED for violation) 1) Use concise, accurate thread titles. Poor thread titles, like Please Help, Urgent, Need Help, Formula Problem, Code Problem, and Need Advice will not get quick attention or may not be answered. 2) Don't post a question in the thread of another member. 3) Don't post questions regarding breaking or bypassing any security measure. 4) Acknowledge the responses you receive, good or bad. 5) Cross-promotion of, or links to, forums competitive to this forum in signatures are prohibited. NOTE : Don't ever post personal or confidential data in a workbook. Forum owners and members are not responsible for any loss. ------------------------------------------------------------------------------------------------------ To post to this group, send email to excel-macros@googlegroups.com
