Hi,
Anybody out there faced this ? (the code below is actually just the core
of the “babelfish” example). But there’s a “flaw” in the code that isn’t
mentioned in the documentation. Specifically, when the button press
invokes procAll, any updates to the widgets are sort of “queued up”
until procAll finishes and only then are they applied - I discovered
this by painstaking trial and error. What if I want procAll to go away
and process a load of stuff that might take 20 minutes, but I want to
update the screen with messages about progress and stuff. I just find
that I get nothing until procAll ends. Clearly I’ve missed a step with
setting up the messaging, but the documentation is persuading me that
there’s nothing more to do.
Can anybody tell me what’s wrong with the code below ? Why won’t the
text field show the text as soon as the data target is updated as the
documentation implies it will ? Other widgets behave in a similar
fashion with the exception of the progress bar which will update
immediately. Very peculiar. Any help appreciated.
Regards,
Graham Stokes
#!/usr/bin/env ruby
require ‘fox16’
include Fox
class Update_test < FXMainWindow
def initialize(app)
super(app, “Test”, nil, nil, DECOR_ALL,
0, 0, 600, 400, 0, 0)
controlsFrame = FXHorizontalFrame.new(self,
LAYOUT_SIDE_BOTTOM|LAYOUT_FILL_X)
btn = FXButton.new(controlsFrame, "Go", nil, nil, 0,
BUTTON_NORMAL|LAYOUT_SIDE_RIGHT)
btn.connect(SEL_COMMAND, method (:procAll))
bottomFrame = FXVerticalFrame.new(self, LAYOUT_FILL_X|LAYOUT_FILL_Y)
FXLabel.new(bottomFrame, "Text:", nil, LAYOUT_FILL_X)
sunkenFrame = FXHorizontalFrame.new(bottomFrame,
FRAME_SUNKEN|FRAME_THICK|LAYOUT_FILL_X|LAYOUT_FILL_Y)
@stringVal = FXDataTarget.new("", nil, 0)
@translatedText = FXText.new(sunkenFrame, @stringVal,
FXDataTarget::ID_VALUE,
TEXT_READONLY|LAYOUT_FILL_X|LAYOUT_FILL_Y)
end
def create
super
show(PLACEMENT_CURSOR)
end
def procAll(sender, sel, ptr)
@stringVal.value += “This is new text\n” # This doesn’t appear
<20-minutes-processing here>
end # until here. Why is
this ?
end
if FILE == $0
application = FXApp.new(“Test”, “Test”)
window = Update_test.new(application)
application.create
application.run
end