New topic: Question About Exit [Solved]
<http://forums.realsoftware.com/viewtopic.php?t=30546> Page 1 of 1 [ 4 posts ] Previous topic | Next topic Author Message rbasic20091005153 Post subject: Question About Exit [Solved]Posted: Sun Oct 18, 2009 10:25 pm Joined: Sat Apr 04, 2009 5:10 pm Posts: 353 Hola, I'm sorry if this question has been raised. I searched this place with 'Exit' and got 80 pages of hits. And there's no way of my reading all of them. I use Exit Sub and Exit Function a lot. I always wonder if there's anything that is more appropriate in some situations? Suppose that I have 2 pushbottons, PushButton1 and PushButton2. PushButton1's Action goes Code:PushButton2.Push Message "Hello." And PushButton2's Action goes Code:Dim i,n As Integer n=0 For i=0 to ListBox1.ListCount-1 If ListBox1.CellCheck(i,0)=True then n=n+1 End if Next i If n>5 Then MsgBox "You can select up to 5 rows at a time." Exit Sub Else End if .. .. .. If the user selects more than 5 rows on ListBox1 and pushes PushButton1, then he or she will see the warning message. The application will escape from PushButton2's Action but will resume with PushButton1's Action. Inevitably, he or she will get the Hello message. Is there anything stronger than Exit Sub so that the application will escape from PushButton2's Action and will not return to PushButton1's Action? Thank you for your advice. Tom _________________ Mac OS X 10.5.6/REALBasic 2008 R5.1 I say 'no' to MBS plug-ins. I boycott them. Last edited by rbasic20091005153 on Sun Oct 18, 2009 11:52 pm, edited 1 time in total. Top npalardy Post subject: Re: Question About ExitPosted: Sun Oct 18, 2009 10:31 pm Joined: Sat Dec 24, 2005 8:18 pm Posts: 5341 Location: Canada, Alberta, Near Red Deer Yeah Dont write code this way This quick sample below should give you an idea of how to rearrange your code so you can tell if the user got the error an NOTHING more should happen PushButton1's Action goes Code: if CallCommonProcessingMethod() = false then exit Message "Hello." PushButton2's Action goes Code: if CallCommonProcessingMethod() = false then exit Code:Function CallCommonProcessingMethod() as boolean Dim i,n As Integer n=0 For i=0 to ListBox1.ListCount-1 If ListBox1.CellCheck(i,0)=True then n=n+1 End if Next i If n>5 Then MsgBox "You can select up to 5 rows at a time." return false End if return true _________________ My web site Great White Software RBLibrary.com REALbasic learning Top rbasic20091005153 Post subject: Re: Question About ExitPosted: Sun Oct 18, 2009 11:07 pm Joined: Sat Apr 04, 2009 5:10 pm Posts: 353 Thanks. I guess there's nothing simpler like Exit Window _________________ Mac OS X 10.5.6/REALBasic 2008 R5.1 I say 'no' to MBS plug-ins. I boycott them. Top npalardy Post subject: Re: Question About ExitPosted: Sun Oct 18, 2009 11:32 pm Joined: Sat Dec 24, 2005 8:18 pm Posts: 5341 Location: Canada, Alberta, Near Red Deer Nope You're not exiting the window so "Exit Window" would not be right in any event Write code that makes it easy for you to maintain, control and extend If code could arbitrarily "jump out of" on spot through all the bits that got called anything that got called would have to know what called it in order to make decisions about what to jump out of Don't design code that requires that kind of knowledge as it's inherently fragile and trouble prone _________________ My web site Great White Software RBLibrary.com REALbasic learning Top Display posts from previous: All posts1 day7 days2 weeks1 month3 months6 months1 year Sort by AuthorPost timeSubject AscendingDescending Page 1 of 1 [ 4 posts ] -- Over 1500 classes with 29000 functions in one REALbasic plug-in collection. The Monkeybread Software Realbasic Plugin v9.3. http://www.monkeybreadsoftware.de/realbasic/plugins.shtml [email protected]
