OpenEuphoria

RE: win32lib v0.57.4 released

• Posted by jordah ferguson <jorfergie03 at yahoo.com> May 07, 2002
• 357 views

Hi Derek,
I think this is the resource leak Thomas Parslow has been mentioning 
about. It is surely a resource leak because it takes some time before it 
appears. It says ezCreateFont:save Font failed. I have experienced this 
problem since ver 55.5


What i'm doing:

I am simply writing and drawing on a pixmap which i later copyBlt on a 
Win32lib Bitmap Control.
this is a sample of the garbage returned after the crash

c:\mail\win32lib.ew:201 in procedure fShowError() 
attempt to divide by 0 
    pParams = {{101'e',122'z',67'C',114'r',101'e',97'a',116't',101'e',
70'F',111'o',110'n',116't',58':',83'S',97'a',118'v',101'e',68'D',67'C',
32' ',102'f',97'a',105'i',108'l',101'e',100'd',46'.'},491}
    pMode = 2
    lErrCode = 491
    lResponse = 1
    lStyle = 16
    s = 
{101'e',122'z',67'C',114'r',101'e',97'a',116't',101'e',70'F',111'o',
110'n',116't',58':',83'S',97'a',118'v',101'e',68'D',67'C',32' ',102'f',
97'a',105'i',108'l',101'e',100'd',46'.'}


... called from c:\mail\win32lib.ew:212 in procedure abortErr()  
    pParams = {{101'e',122'z',67'C',114'r',101'e',97'a',116't',101'e',
70'F',111'o',110'n',116't',58':',83'S',97'a',118'v',101'e',68'D',67'C',
32' ',102'f',97'a',105'i',108'l',101'e',100'd',46'.'},491}

... called from c:\mail\win32lib.ew:5298 in function EzCreateFont()  
    id = 3
    pDC = 4466
    faceName = {84'T',105'i',109'm',101'e',115's',32' 
',78'N',101'e',119'w',
32' ',82'R',111'o',109'm',97'a',110'n'}
    iDeciPtHeight = 80'P'
    iDeciPtWidth = 0
    iAttributes = 1
    fLogRes = 0
    logfont = 0
    hdc = 4466
    cxDpi = <no value>
    cyDpi = <no value>
    hFont = <no value>
    lf = 7677836
    pt = 7677900
    tm = <no value>
    savedDC = 0
    mset = 7677820
    boldFlag = <no value>
    italicFlag = <no value>
    underlineFlag = <no value>
    strikeOutFlag = <no value>
    lWidth = 0
    lEscapement = 0
    lOrientation = 0
    lCharSet = 0
    lOutPrecision = 0
    lClipPrecision = 0
    lQuality = 0
    lPitchAndFamily = 0

... called from c:\mail\win32lib.ew:5372 in function assignFont()  
    id = 3
    fontID = <no value>
    result = <no value>
    hdc = 4466
    lifetime = <no value>

... called from c:\mail\win32lib.ew:5884 in function queryFont()  
    id = 115's'
    request = 524455
    args = {7677800,15,7677784}
    useId = 3
    hdc = <no value>
    result = <no value>
    saved = {{},10,0,0}

... called from c:\mail\win32lib.ew:5939 in function getTextExtent()  
    id = 115's'
    text = 
{{115's',115's',115's',115's',115's',100'd',102'f',102'f',102'f',
102'f',102'f',102'f',102'f',32' ',32' '}}




Make Progress...or stand aside!
jordah Ferguson
jorfergie03 at yahoo.com 

Derek Parnell wrote:
> 
> Thomas Parslow (PatRat) wrote:
> > > - "by Thomas Parslow". GDI resource leak using wPuts and queryFont 
> > > removed.
> > 
> > Hi,
> > 
> > This bug still seems to be present, applying the fix I posted before
> > still works though...
> > 
> >
> > http://www.rapideuphoria.com/cgi-bin/esearch.exu?fromMonth=4&fromYear=7&toMonth=4&toYear=7&postedBy=thomas+parslow&keywords=queryFont+wPuts
> > 
> > 
> That's weird Thomas. I tested it and got no resource leakage. Maybe my 
> testing process is flawed. How exactly are you seeing the resource 
> leakage? 
> As for your fix, yes it worked  but I needed a more generic way of doing 
> 
> it, so I adapted your code to catch all font leaks, now and in the 
> future. (Or so I thought).
> -----------
> Derek.
> 
>