[PMW 1.2] Dialog controls vanish upon editing

[F. GEIGER]

Hi all,

I use PMW 1.2 on Python 2.3.0 on Win2k.

I've created a dialog that looks like so:

+----------------------+
Name | |
+----------------------+
+----------------------+
Caption text head | |
+----------------------+
+----------------------+
# Digits w/o sign | |
+----------------------+
+----------------------+
Caption text tail | |
+----------------------+
+--+
Is editable | |
+--+
+--------------------+-+
Parameter name | |V| Drop-down.
+--------------------+-+
I pull down the drop-down control, select an item, the drop-down closes
and - vanishes. All controls have vanished. After half a second or so the
first one reappears, but w/o its label 'Name'.

The other ones reapper if I click onto the pane where they are supposed to
be. They also reapper if I change to an other app and then come back again.
I guess this is because a window update is issued by the OS.

What do I miss?
Many thanks in advance and kind regards
Franz GEIGER
Code:

class QCWidgetNumberE ditor(_Editor):
'''
+----------------------+
Name | |
+----------------------+
+----------------------+
Caption text head | |
+----------------------+
+----------------------+
# Digits w/o sign | |
+----------------------+
+----------------------+
Caption text tail | |
+----------------------+
+--+
Is editable | |
+--+
+--------------------+-+ Drop-down. Offers only
existing
Parameter name | |V| parameters, i.e. you have to
first
+--------------------+-+ create at least one parameter.
'''

def __init__(self, parent, x, y, traits=None):
_Editor.__init_ _(self, parent)
self._pos = (x, y)
self._traits = traits
self._isEditabl e = Tkinter.IntVar( 0)
self._createAnd PackEntryFields _()
return

def traits(self):
return self._traits

def _createAndPackE ntryFields_(sel f):

w = Tkinter.Label(s elf.interior(),
pady = 20
)
w.pack(expand = 1, fill = 'both', padx = 4, pady = 4)

parent = w

# Create and pack the EntryFields.
nameId = ''
if self._traits:
nameId = self._traits.na me()
self._tkwNameId = Pmw.EntryField( parent,
labelpos = 'w',
value = nameId,
label_text = 'Name of number
control:',
validate = self._validateN ameId_,
modifiedcommand =
self._onChanged NameId_,
command = self._onNameId_
)
textDisplayed = ''
if self._traits:
textDisplayed = self._traits.te xtHead()
self._tkwTextDi splayedHead = Pmw.EntryField( parent,
labelpos = 'w',
value = textDisplayed,
label_text = 'Caption text
head:',
# validate = {'validator' :
'real',
# 'min' : 10,
'max' : 99, 'minstrict' : 0
# },
modifiedcommand =
self._onChanged TextDisplayedHe ad_
)
textDisplayed = '1'
if self._traits:
textDisplayed = str(self._trait s.numDigitsExcl Sign())
self._tkwNumDig itsExclSign = Pmw.EntryField( parent,
labelpos = 'w',
value = textDisplayed,
label_text = '# Digits w/o
sign:',
validate = {'validator' :
'integer',
'min' : 1,
'max' : 5, # 'minstrict' : 0
},
modifiedcommand =
self._onChanged NumDigits_
)
textDisplayed = ''
if self._traits:
textDisplayed = self._traits.te xtTail()
self._tkwTextDi splayedTail = Pmw.EntryField( parent,
labelpos = 'w',
value = textDisplayed,
label_text = 'Caption text
tail:',
modifiedcommand =
self._onChanged TextDisplayedTa il_
)

if self._traits:
self._isEditabl e.set(self._tra its.isEditable( ))
else:
self._isEditabl e.set(0)
tkwIsEditable = Tkinter.Checkbu tton(parent,
variable=self._ isEditable,
text='Editable on target',
command=self._o nToggleIsEditab le_
)

paramNames = Proxy.DataProxy ().parameterNam es()
self._tkwParamN ame = Pmw.ComboBox(pa rent,
labelpos = 'nw',
scrolledlist_it ems=paramNames,
label_text="Par ameter name"
)
i = 0
if self._traits:
paramName = self._traits.pa rameterName()
try: i = paramNames.inde x(paramName)
except ValueError:
pass

try:
self._tkwParamN ame.selectitem( Proxy.DataProxy ().parameterNam es()[i])
except IndexError: pass

entries = (self._tkwNameI d,
self._tkwTextDi splayedHead,
self._tkwNumDig itsExclSign,
self._tkwTextDi splayedTail,
tkwIsEditable,
self._tkwParamN ame
)

for entry in entries:
entry.pack(fill ='x', expand=1, padx=10, pady=5)
Pmw.alignlabels (entries)

self._tkwNameId .component('ent ry').focus_set( )

return

def _execute_(self, event):
if event == 'OK':
nameId = self._tkwNameId .getvalue()
textDisplayedHe ad = self._tkwTextDi splayedHead.get value()
numDigits = int(self._tkwNu mDigitsExclSign .getvalue())
textDisplayedTa il = self._tkwTextDi splayedTail.get value()
isEditable = self._isEditabl e.get()
paramName = self._tkwParamN ame.get()
if nameId and numDigits > 0 and paramName:
param = Proxy.DataProxy ().parameters(p aramName)
self._traits = QCWidgetTraits. QCWidgetNumberT raits(nameId,
self._pos[0],
self._pos[1],

textDisplayedHe ad,
numDigits,

textDisplayedTa il,
isEditable,
paramName
)

self.deactivate ()
return

def _onChangedTextD isplayedHead_(s elf):
text = self._tkwTextDi splayedHead.get value()
return

def _onChangedNameI d_(self):
return

def _onChangedNumDi gits_(self):
text = self._tkwNumDig itsExclSign.get value()
return

def _onChangedTextD isplayedTail_(s elf):
text = self._tkwTextDi splayedTail.get value()
return

def _onToggleIsEdit able_(self):
return

def _onNameId_(self ):
return

def _validateFunNam e_(self, text):
return 1 # 2DO

def _validateNameId _(self, text):
if Proxy.DataProxy ().parameterExi sts(text):
return -1
return 1

[Peter Otten]

F. GEIGER wrote:

Hi all,

I use PMW 1.2 on Python 2.3.0 on Win2k.

I've created a dialog that looks like so:

+----------------------+
Name | |
+----------------------+
+----------------------+
Caption text head | |
+----------------------+
+----------------------+
# Digits w/o sign | |
+----------------------+
+----------------------+
Caption text tail | |
+----------------------+
+--+
Is editable | |
+--+
+--------------------+-+
Parameter name | |V| Drop-down.
+--------------------+-+
I pull down the drop-down control, select an item, the drop-down closes
and - vanishes. All controls have vanished. After half a second or so the
first one reappears, but w/o its label 'Name'.

The other ones reapper if I click onto the pane where they are supposed to
be. They also reapper if I change to an other app and then come back
again. I guess this is because a window update is issued by the OS.

What do I miss?
I would guess that
def _validateNameId _(self, text):
if Proxy.DataProxy ().parameterExi sts(text):
return -1
return 1

is either awfully slow and/or throws an exception.

You could easily verify this assumption with

(a)
def _validateNameId _(self, text):
return 1

and
(b)
def _validateNameId _(self, text):
try:
if Proxy.DataProxy ().parameterExi sts(text):
return -1
return 1
except: # generally a bad idea
print >> sys.stderr, "something went wrong"
return 1
Peter

[F. GEIGER]

Thanks Peter,

but this method doesn't seem to be the reason. I placed a "return 1" as the
first statement in its body. No change for the better.

Kind regards
Franz GEIGER

"Peter Otten" <__*******@web. de> schrieb im Newsbeitrag
news:bl******** *****@news.t-online.com...

F. GEIGER wrote:

Hi all,

I use PMW 1.2 on Python 2.3.0 on Win2k.

I've created a dialog that looks like so:

+----------------------+
Name | |
+----------------------+
+----------------------+
Caption text head | |
+----------------------+
+----------------------+
# Digits w/o sign | |
+----------------------+
+----------------------+
Caption text tail | |
+----------------------+
+--+
Is editable | |
+--+
+--------------------+-+
Parameter name | |V| Drop-down.
+--------------------+-+
I pull down the drop-down control, select an item, the drop-down closes
and - vanishes. All controls have vanished. After half a second or so the first one reappears, but w/o its label 'Name'.

The other ones reapper if I click onto the pane where they are supposed to be. They also reapper if I change to an other app and then come back
again. I guess this is because a window update is issued by the OS.

What do I miss?

I would guess that

def _validateNameId _(self, text):
if Proxy.DataProxy ().parameterExi sts(text):
return -1
return 1

is either awfully slow and/or throws an exception.

You could easily verify this assumption with

(a)
def _validateNameId _(self, text):
return 1

and
(b)
def _validateNameId _(self, text):
try:
if Proxy.DataProxy ().parameterExi sts(text):
return -1
return 1
except: # generally a bad idea
print >> sys.stderr, "something went wrong"
return 1
Peter