Checkbox memory problem (was: returning an array)

I opened another thread for this question:

@Fu Lin Yiu: I think what you say is not exactly right ... When I create a dialog with checkboxes, as soon as I realize or show the dialog box the checkboxes stay alright later.
 

void makeDialog(DB x) {
    string myArr[] = {"123","345","567"}
    checkBox (x, "Choices:", myArr,0) 
 
    realize x // Comment me out and this will not work ...
    
    myArr[0] = addr_ 0   // trash the array for good
    myArr[1] = addr_ 0
    myArr[2] = addr_ 0
}
 
DB diag = create "Test"
 
makeDialog diag
 
show diag

This means a program that comes without putting string arrays to buffers, would could have code like this:

int getSize (Skip k) {int i = 0; int v; for v in sk do i++; return i }
void fillArrayWithValues (string ar[], Skip sk) { ... fill array from Skip ... }
 
void makeMyDialog (DB diag, Skip myCheckBoxOption1, Skip MyCheckBoxOption2) {
    DBE element = edit (...)
    ...
    string sArCheck1[getSize myCheckBoxOption1]; 
    fillArrayWithValues (sArCheck1, myCheckBoxOption1) 
    DBE checks1 = checkBox (diag, "MyLabel", sArCheck1, 0) 
    ... 
    string sArCheck1[getSize myCheckBoxOption1]; 
    fillArrayWithValues (sArCheck1, myCheckBoxOption2) 
    DBE checks1 = checkBox (diag, "MyLabel", sArCheck1, 0) 
 
    // realize the dialog, when it is built, so our checkboxes stay alright
    realize diag
}
 
 
void makeEnumerationDialog (Module m, string enumName) {
     Skip vals = getValuesForEnumeration(m, enumName) 
 
     DB myDialog = create "Choose a value:" 
     makeMyDialog myDialog
 
     block myDialog 
     // .... do something ....
}

I guess this is not too bad?! And it should be maintainable. I think arrays might just not be the right datatype to pass around in functions ... Mathias

Mathias Mamsch, IT-QBase GmbH, Consultant for Requirement Engineering and D00RS

Re: Checkbox memory problem (was: returning an array)
SystemAdmin - Tue Jun 01 17:27:22 EDT 2010