OpenEuphoria

Win32Lib bug?

• Posted by Larry Miller <larrymiller at sasktel.net> Jan 28, 2005
• 460 views

I am having a problem with Win32Lib v .60.6, although it might possibly be my
code.
In any case this is the situation:

My application opens a modal dialog box with a listview control. The first 
time it opens and closes with no errors or warnings. But if the dialog is 
opened a second time I receive the following warning from Win32Lib:
Error code 497
getHandle: Object is destroyed

The Listview requires no images and none have been added with addIcon but 
it does use the LVS_EX_CHECKBOXES extended style.
The problem only occurs when the dialog window is destroyed, not if it is
simply closed.
When I use setWarning(2) I get the following in the error file (partial).

... called from D:\euphoria\win32lib\include\win32lib.ew:7841 in function
getHandle()
    id = 177
    hWnd = <no value>

... called from D:\euphoria\win32lib\include\win32lib.ew:14270 in procedure
setImageList()
    id = 178
    IL = 177
    size = 0
    message = <no value>

... called from D:\euphoria\win32lib0\include\win32lib.ew:16975 in function
createEx()
    pControl = 39'''
    pCaption = {}
    pOwner = 163
    pLeft = 5
    pTop = 5
    pWidth = 230
    pHeight = 180
    styleFlags = 16389
    exFlags = 0
    id = 178
    at = <no value>
    hotkey = <no value>
    bgControl = <no value>
    style = <no value>
    result = <no value>
    hWnd = 1508342
    flags = 1417756741
    extendedflags = 512
    lParenthWnd = 852932
    szClassName = 9150460
    szCaption = 9261060
    hMenu = 163
    newhWnd = <no value>
    pstr = <no value>
    struct = <no value>
    ok = <no value>
    newobj = <no value>
    lvcol = {
              {{},18,0},
              {{},192,0}
            }
    BBox = {5,5,230,180}
    sbPanels = <no value>
    lHintText = {}
    lIconInfo = <no value>
    autoclose = 0
    lBGColor = {{}}
    lUserPre = {}
    lUserPost = <no value>
    lTemp = <no value>
    i = 2

It appears to me that the Image list is being destroyed when the Listview 
is destroyed. I know that I can avoid the warning with setWarning(0) but 
this doesn't deal with the underlying problem.

Is this normal behaviour for Win32Lib or am I doing something wrong?

Larry Miller