OpenEuphoria

1. Bug in Win32Lib 0.70.4

• Posted by Pete Stoner <stoner.pete at gmail??om> Mar 20, 2008
• 989 views

CChris, I've found a bug in 0.70.4, in the restoreMousePointer routine calls. It
fails with Error code 472, getRect:GetWindowRect failed when there is a popup
menu. It seems to try a getRect on the popup which crashes the prog. The
following shows the error.

without warning
include win32lib.ew
constant Main = create(Window, "Test", 0, 0, 0, 200, 100, 0)
constant pop = create(Popup, "", Main, 0, 0, 0, 0, 0)
constant Item = create(MenuItem, "Option 1", pop, 0, 0, 0, 0, 0)

global procedure Win_OnOpen( integer self, integer event, sequence parms)
    setMousePointer( {Main}, WaitPointer )
    restoreMousePointer({Main})
end procedure
setHandler(Main, w32HOpen, routine_id("Win_OnOpen") )

WinMain(Main, Normal)

if I do a setMousePointer( {Main}, ArrowPointer ) instead of the
restoreMousePointer its fine.

PeteS

3. Re: Bug in Win32Lib 0.70.4

• Posted by marky1124 Mar 10, 2009
• 1043 views

Hi,

Almost a year ago Pete Stoner reported an issue with win32lib v0.70.4 where it fails with when there is a restoreMousePointer call whilst a popup menu is open.

	Error Code 472 
	getRect:GetWindowRect failed. 

The problem still exists in v0.70.4a. Is there any chance of a fix being made?

Cheers,
Mark

5. Re: Bug in Win32Lib 0.70.4

• Posted by marky1124 Mar 12, 2009
• 1013 views

Hi Chris,

It fails for me using the test code provided by Pete in the first post of this thread. I have downloaded a fresh copy of Win32lib v0.70.4a and it fails using that. I checked for differences between the vanilla v0.70.4a and the one I had and the only change is to w32replaceItem() which was provided to me by you

E.g.

	-- Fix as per CChris to cope with pNew containing pOld 
        -- http://openeuphoria.org/EUforum/index.cgi?module=forum&action=flat&id=103817 
        -- This fix hopefully will be included in a future release of win32lib 
        -- lFrom += lLenNew 
        lFrom = lPos + lLenNew 

I was slow to realise what you were asking for here. Now I've typed this I realise that you've provided a hidden email address to avoid robot spam list generators. Changing hat for at and doubt for dot. It's a new one on me. If you haven't replied here in the next few days I'll try your email address.

Cheers, Mark

7. Re: Bug in Win32Lib 0.70.4

• Posted by marky1124 Mar 17, 2009
• 970 views

Hi CChris,

Thank you very much for that. You've certainly fixed the original test code that Pete provided. Unfortunately the problem still exists in the main application. When the application is starting it runs restoreMousePointer({wResMan}) which leads to the crash. I turned on "with trace" on line 442 of win32lib.ew and put a trace(1) just before the application calls restoreMousePointer(). This from the ex_conv.err :-

c:\euphoria\win32lib\Include\w32msgs.e:113 in procedure fShowError()  
attempt to divide by 0  
    pParams = { 
                "getRect:GetWindowRect failed.", 
                472 
              } 
    pMode = 2 
    lErrCode = 472 
    lResponse = 1 
    lStyle = 16 
    s = "getRect:GetWindowRect failed." 
    lDispMsg = "Error code 472\ngetRect:GetWindowRect failed.\n\nWin32Lib v0.70.4 17-Jun-2008" 
    lTitle = "Win32Lib AppWindow - Fatal Error" 
 
... called from c:\euphoria\win32lib\Include\w32msgs.e:146 in procedure abortErr()   
    pParams = { 
                "getRect:GetWindowRect failed.", 
                472 
              } 
 
... called from c:\euphoria\win32lib\Include\Win32lib.ew:14656 in function getRect()   
    id = 36'$' 
    top = <no value> 
    bottom = <no value> 
    left = <no value> 
    right = <no value> 
    ctltype = 0 
    struct = 35704780 
    pt = <no value> 
    hdc = <no value> 
    mset = 10405380 
    bufsize = <no value> 
    hWnd = <no value> 
    xy = <no value> 
    retval = {0,0,0,0} 
    i = <no value> 
 
 
... called from c:\euphoria\win32lib\Include\Win32lib.ew:5586 in function isScreenPointIn()   
    id = 36'$' 
    pX = 560 
    pY = 319 
    lScreenRect = <no value> 
 
... called from c:\euphoria\win32lib\Include\w32resources.ew:5128 in procedure restoreMousePointer_()   
    id = 36'$' 
    depth = 2 
    lKids = {} 
    lCursors = {65555} 
    mouse_pos = {560,319} 
    i = 1 
 
... called from c:\euphoria\win32lib\Include\w32resources.ew:5118 in procedure restoreMousePointer_()   
    id = ")" 
    depth = 1 
    lKids = { 
              "$(", 
              {39,15}, 
              {40,19}, 
              "3(", 
              {63,15}, 
              {64,19}, 
              {65,15}, 
              {66,19}, 
              {68,17}, 
              {69,17}, 
              {71,17}, 
              "S/" 
            } 
    lCursors = <no value> 
    mouse_pos = <no value> 
    i = 1 
 
... called from c:\euphoria\win32lib\Include\w32resources.ew:5118 in procedure restoreMousePointer_()   
    id = {3} 
    depth = 0 
    lKids = { 
              {4,18}, 
              {5,18}, 
              {6,18}, 
              {7,18}, 
              {8,15}, 
              {9,18}, 
              {10,15}, 
              {11,16}, 
              {12,18}, 
              {13,15}, 
              {14,19}, 
              {15,15}, 
              {16,15}, 
              {17,2}, 
              {18,15}, 
              {19,15}, 
              {20,18}, 
              {21,15}, 
              {22,15}, 
              {23,15}, 
              {24,15}, 
              {25,18}, 
              {26,15}, 
              {27,18}, 
              {28,16}, 
              {29,18}, 
              {30,2}, 
              {31,15}, 
              {32,18}, 
              {33,15}, 
              {34,16}, 
              {35,16}, 
              "%'", 
              {38,15}, 
              {41,8}, 
              {42,15}, 
              {43,15}, 
              {44,19}, 
              {45,15}, 
              {46,15}, 
              {47,15}, 
              {48,18}, 
              {49,15}, 
              {50,19}, 
              {52,2}, 
              {53,2}, 
              {54,2}, 
              {55,2}, 
              {57,2}, 
              {58,19}, 
              {59,2}, 
              {60,3}, 
              {61,2}, 
              {62,16}, 
              {67,17}, 
              {70,17}, 
              {72,17}, 
              {73,17}, 
              {74,17}, 
              {75,17}, 
              {76,17}, 
              {77,17}, 
              {78,17}, 
              {79,17}, 
              {80,17}, 
              {81,17}, 
              {82,17}, 
              {98,1}, 
              {125,1}, 
              {239,1}, 
              {282,1}, 
              {386,24}, 
              {499,25}, 
              {510,25} 
            } 
    lCursors = <no value> 
    mouse_pos = <no value> 
    i = 35'#' 
 
... called from c:\euphoria\win32lib\Include\w32resources.ew:5157 in procedure restoreMousePointer()   
    id = {3} 
 
... called from .\ResManWindowRoutines.ew:3155 in procedure OnOpen_ResManWin()   
<snip> 

The final lines leading up to the divide by zero are:

Traced lines leading up to the failure: 
 
C:\EUPHORIA\include\machine.e:113	    machine_proc(M_FREE, a) 
C:\EUPHORIA\include\machine.e:114	end procedure 
C:\EUPHORIA\include\machine.e:63	    return a > 0 and a <= MAX_ADDR and floor(a) = a 
C:\EUPHORIA\include\machine.e:113	    machine_proc(M_FREE, a) 
C:\EUPHORIA\include\machine.e:114	end procedure 
C:\EUPHORIA\include\machine.e:63	    return a > 0 and a <= MAX_ADDR and floor(a) = a 
C:\EUPHORIA\include\machine.e:113	    machine_proc(M_FREE, a) 
C:\EUPHORIA\include\machine.e:114	end procedure 
C:\EUPHORIA\include\machine.e:63	    return a > 0 and a <= MAX_ADDR and floor(a) = a 
C:\EUPHORIA\include\machine.e:113	    machine_proc(M_FREE, a) 
C:\EUPHORIA\include\machine.e:114	end procedure 
c:\euphoria\win32lib\Include\Win32lib.ew:567	    vWinMainState = kFinished 
c:\euphoria\win32lib\Include\Win32lib.ew:568	end procedure 
c:\euphoria\win32lib\Include\Win32lib.ew:24996	end procedure 
c:\euphoria\win32lib\Include\Win32lib.ew:25737	    return 0 
c:\euphoria\win32lib\Include\w32msgs.e:37	            if lRC = -1 then 
c:\euphoria\win32lib\Include\w32msgs.e:40	        end for 
c:\euphoria\win32lib\Include\w32msgs.e:41	        xUserCleanUp = lUserCleanUp 
c:\euphoria\win32lib\Include\w32msgs.e:44	end procedure 
c:\euphoria\win32lib\Include\w32msgs.e:108	        if pMode = 2 then 
c:\euphoria\win32lib\Include\w32msgs.e:110	            crash_message(lDispMsg) 
C:\EUPHORIA\include\machine.e:232	    machine_proc(M_CRASH_MESSAGE, msg) 
C:\EUPHORIA\include\machine.e:233	end procedure 
c:\euphoria\win32lib\Include\w32msgs.e:112	        if pMode != 3 then 
c:\euphoria\win32lib\Include\w32msgs.e:113	            abort(1/0) -- Force the ex.err to be created. 

I suspect a little more of your magic is required to fix this properly. If the above is of no use I will attempt to create another piece of test code to demonstrate the problem.

All the best,
Mark