OpenEuphoria

1. Listview gridline problem with Win32Lib0.70.20

• Posted by Kondor_Attila Feb 19, 2011
• 1528 views

I use Openeuphoria 4.0 and Win32Lib 0.70.20 from now. Unfortunately the programs produce trouble, wherein Listview with gridline are. The gridlines disappear or increase twofold on vertical scrollbar mouse click. These programs work with Win32Lib 0.60.6 (and Euphoria 3.11)faultlessly.

Thanks for help!

-- lv-demo.exw 
 
include Win32Lib.ew 
 
without warning 
 
constant Window1 = createEx( Window, "Window1", 0, Default, Default, 247, 167, 0, 0 ) 
constant ListView1 = createEx( ListView, {{"ListView1",40,'^'}, {"Column1",50,'^'},{"Column2",50,'^'}},  
								Window1, 12, 8, 210, 115,  
								or_all({LVS_REPORT,LVS_NOCOLUMNHEADER}),0) 
													 
 setLVStyle(ListView1, or_all({LVS_EX_GRIDLINES,LVS_EX_FULLROWSELECT,LVS_EX_ONECLICKACTIVATE,LVS_EX_FLATSB})) 
					 
 setFont(ListView1,"Times New Roman", 10, Normal) 
  			 
sequence IDElvItems 
integer IDElvItemNo 
 
IDElvItems = {"1","2","3","4","5","6","7","8","9","10","11","12"} 
 
for i=1 to length(IDElvItems) do  
    IDElvItemNo = addLVItem( ListView1,0, IDElvItems[i]) 
end for 
 
WinMain( Window1,Normal ) 

3. Re: Listview gridline problem with Win32Lib0.70.20

• Posted by petelomax Feb 20, 2011
• 1480 views

After some more digging, this is a problem with XP, which M$ refused to fix. In fact it seems the code I posted above is the best that can be done. Eg point 4 of http://www.codeproject.com/KB/tips/BoxOTricks.aspx

There was a M$KB article mentioned alot, http://support.microsoft.com/kb/813791/en-us but as M$ decided it would only be fixed in Vista, they've removed it (presumably out of embarassment). They missed this though: http://support.microsoft.com/kb/835328 which I see has not been marked as fixed.

Regards, Pete

5. Re: Listview gridline problem with Win32Lib0.70.20

• Posted by petelomax Feb 20, 2011
• 1350 views

Glad I could help. Actually, when I looked more carefully, there were I think 8 instances of this bug in Edita, so I added the following fix to Arwen, in SubProc():

    elsif (msg=WM_HSCROLL or msg=WM_VSCROLL) then 
        objectType = ObjectType[id] 
        if objectType=ListView then -- added 20/2/2011 
            if and_bits(sendMessage(id, LVM_GETEXTENDEDLISTVIEWSTYLE, 0, 0),LVS_EX_GRIDLINES) then 
                repaintWindow(id) 
            end if 

Unfortunately I have no idea what the equivalent fix for win32lib would look like.

Yeah, like I'm going to get the whole world to upgrade from XP to Windows 7. (Just last week I heard of someone who actually got sacked, some years ago this was, for recommending a company-wide upgrade from XP to Vista!)

Regards, Pete