A Question about (FiveLinux) Class TWBrowse

[xProgrammer]

Hi Antonio

I don't quite know how to do something. Take a TWBrowse. I want to be able to set the default selection to some position other than 1. I can do this by setting oBrw:nAt but the issue is if I set that to record n then records 1 through n-1 aren't displayed. Is there a way around this? To date I have been skirting the issue by re-ordering the arrays that are browsed so the record I want selected as default is in position 1, but I am coming to situations where this is less than desirable. Can you advise?

You can see the issue using the testbrwa.prg program you sent me with the addition of 1 line as follows:

Code: Select all

// Using a browse to display a multidimensional array

#include "FiveLinux.ch"

function Main()

   local oWnd, oBrw, aTest := { { "one", "two" }, { "three", "four" } }

   DEFINE WINDOW oWnd TITLE "Testing Browses" SIZE 522, 317

   @ 2, 2 BROWSE oBrw OF oWnd ;
      HEADERS "First", "Second" ;
      FIELDS  aTest[ oBrw:nAt ][ 1 ], aTest[ oBrw:nAt ][ 2 ]

   oBrw:SetArray( aTest )
   oBrw:nAt := 2              // this is the line I added to set record 2 as the "default" choice.

   @ 28, 2 BUTTON "_Ok" OF oWnd ACTION oWnd:End()
   
   @ 28, 30 BUTTON "Add" OF oWnd ACTION ( AAdd( aTest, { "five", "six" } ), oBrw:SetArray( aTest ), oBrw:GoTop() )

   ACTIVATE WINDOW oWnd

return nil

I note that in TDialog there is an intriguing piece of code to do with TListbox objects, namely:

Code: Select all

   // Listbox controls initialization workaround
   for n = 1 to Len( ::aControls )
      if ::aControls[ n ]:ClassName() == "TLISTBOX"
         ::aControls[ n ]:SelItem( ::aControls[ n ]:nAt )
      endif
   next

Is this to overcome a comparable issue with list boxes? Is there a way of having an equivalent to SelItem() in TWBrowse?

Regards
Doug
(xProgrammer)

[Antonio Linares]

Doug,

Please try this workaround:

oBrw:SetArray( aTest )
oBrw:GoDown()

or for n rows:

Code: Select all

for n = 1 to nRows
   oBrw:GoDown()
next

[xProgrammer]

Hi Antonio

I think I had already tried this "trick" but it doesn't work because the n-th row is put at the top of the browse and the rows above aren't visible. (Unless you arrow up to them which is no good and moves the default selection you have just set.)

Here is the example:

Code: Select all

// Using a browse to display a multidimensional array

#include "FiveLinux.ch"

function Main()

   local oWnd, oBrw, aTest := { { "one", "two" }, { "three", "four" } }

   DEFINE WINDOW oWnd TITLE "Testing Browses" SIZE 522, 317

   @ 2, 2 BROWSE oBrw OF oWnd ;
      HEADERS "First", "Second" ;
      FIELDS  aTest[ oBrw:nAt ][ 1 ], aTest[ oBrw:nAt ][ 2 ]

   oBrw:SetArray( aTest )
   //oBrw:nAt := 2
   oBrw:GoDown()

   @ 28, 2 BUTTON "_Ok" OF oWnd ACTION oWnd:End()
   
   @ 28, 30 BUTTON "Add" OF oWnd ACTION ( AAdd( aTest, { "five", "six" } ), oBrw:SetArray( aTest ), oBrw:GoTop() )

   ACTIVATE WINDOW oWnd

return nil

Regards
Doug

[Antonio Linares]

Doug,

This is not working totally right yet, but we are closer

oBrw:SetArray( aTest )
oBrw:nRowPos = 2

[Antonio Linares]

No, it is not a right solution as oBrw:nAt is not properly set

[Antonio Linares]

This is better:

oBrw:SetArray( aTest )
oBrw:nAt = 2
oBrw:nRowPos = 2