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Ralf
Joined: 30 Aug 2007
Posts: 52
Location: munich
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 Posted: Fri Dec 05, 2025 5:03 pm Post subject: number of rows in list view control |
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I have program crashes with listview controls, if the number of rows is getting larger. I was able to reproduce a similar crash with a simple test program:
| Code: |
winapp
Program Test_lv
!=======================================================================
integer, parameter :: lv_len = 109
integer :: winio@
character(len=20),dimension(0:lv_len) :: items
integer :: iw, nitems, view
items(0) = '|Header|Value'
do i=1,lv_len
write(items(i),'(a5,i3.3,a1,f7.1)') '|Test',i,'|',float(i)
enddo
nitems = lv_len+1
view = 1
iw = winio@ ('%ca[Test lv]&')
iw = winio@ ('%lv&',200,100,items,nitems,isel,view)
iw = winio@ ('%ff%nl%cn%`12bt[Close]')
iw = winio@ ('%ff%nl ')
stop
end |
This example crashes with an access violation error in clearwin64.dll for 109 or more rows. With a smaller number of rows it works fine. The 32bit version runs without problems.
I am using ftn95 v9.13. |
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PaulLaidler
Site Admin
Joined: 21 Feb 2005
Posts: 8307
Location: Salford, UK
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| Posted: Fri Dec 05, 2025 5:30 pm Post subject: |
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| I will aim to take a look at this on Monday. |
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wahorger
Joined: 13 Oct 2014
Posts: 1275
Location: Morrison, CO, USA
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| Posted: Sat Dec 06, 2025 12:53 am Post subject: |
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I don't see a declaration for "isel". This should be dimensioned from 1:lv_len when used with %lv of type=1.
It should be initialized to zero. The appropriate element of the vector will be changed to 1 when a row is selected. You cannot select row=0, hence the dimensioning starting at 1. |
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DanRRight
Joined: 10 Mar 2008
Posts: 2957
Location: South Pole, Antarctica
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| Posted: Sun Dec 07, 2025 2:33 am Post subject: |
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I got inferiority complex for two decades after I touched bugotron %lv.
GL to you. |
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