From: michele boscolo <miboscol@...>
Date: 2011-08-05T02:34:56+09:00
Subject: Qt ProgressDialog

Sorry for my english.....Hello everyone I am here for to ask help.
I can not solve from myself.
In practice I would to run one method for start the instructions and see
the progressbar to progress,
I can do this with one thread as you can see from my code,
But I would like to avoid using in the thread because when I run
instructions
more complex as like win32ole open an excel file and copy data, the
performance are very slow, I tried to remove Instructions
from the thread but the window does not respond, and I update the
progressbar
at the end of processing, I would my application
respond also when he's working on something, I have also tried
the trick:

timer=Qt::Timer.new(self)
timer.start(10)
connect(timer, SIGNAL('timeout()'), self, SLOT('update()'))

But not work for me.


Thank, best regard,


main.rb
________________________________________________________________
require 'Qt'
require 'window.rb'

app = Qt::Application.new(ARGV)
win = Window.new
win.show
win.exec

________________________________________________________________



windows.rb
________________________________________________________________

class Window < Qt::Dialog

  slots 'update()','run()'

  def initialize(parent = nil)
    super(parent)

    @numberLabel = Qt::Label.new(tr("Number:"))
    @numberLineEdit = Qt::LineEdit.new("Inser number")
    @numberLabel.buddy = @numberLineEdit
    @statusLabel = Qt::Label.new(tr("Please enter one number."))
    @connectButton = Qt::PushButton.new(tr("Run"))
    @connectButton.default = true
    @quitButton = Qt::PushButton.new(tr("Quit"))
    @progressDialog = Qt::ProgressDialog.new(self)

    connect(@connectButton, SIGNAL(:clicked), self, SLOT('run()'))
    connect(@quitButton, SIGNAL(:clicked), self, SLOT(:close))

    topLayout = Qt::HBoxLayout.new do |t|
      t.addWidget(@numberLabel)
      t.addWidget(@numberLineEdit)
      t.addWidget(@connectButton)
    end

    buttonLayout = Qt::HBoxLayout.new do |b|
      b.addStretch(1)
      b.addWidget(@quitButton)
    end

    self.layout = Qt::VBoxLayout.new do |m|
      m.addLayout(topLayout)
      m.addWidget(@statusLabel)
      m.addLayout(buttonLayout)
    end

    setWindowTitle(tr("Calculator"))
  end



  def run()
    Qt::Application.overrideCursor = Qt::Cursor.new(Qt::WaitCursor)
    @statusLabel.text = tr("Elaborazine in corso")
    @progressDialog.labelText = tr("Elaborazione...")
    @progressDialog.show()
    @connectButton.enabled = false

    @i=0
    Thread.new()do
    while @i<100
      sleep 0.1
      @progressDialog.maximum = 100
      @progressDialog.value = @i
      @i=@i+1
    end

  end
end

end

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