questions on how to create a form

[farshizzo]

The show method just sets the dialog visible, waits for either the accept or cancel button to be pressed, then hides the dialog. If you do not want to use a task, then you can manually perform these steps. Here is the code for the show command:

def show(self):
	"""Create task that displays dialog"""
	
	#Show dialog
	self.visible(1)
		
	#Yield until accept or cancel button is released
	d = viz.Data()
	yield viztask.waitButtonUp([self.accept,self.cancel],d)
		
	#Save whether the dialog was accepted
	self.accepted = d.button is self.accept
		
	#Hide dialog
	self.visible(0)

[vizmaster]

When I add the yield statement I lose visibility of the form. I don't manually change the visibility. What gives?

[farshizzo]

You should not be using yield statements if you are not using tasks. Here is a sample script that displays a dialog without using tasks. Use the spacebar to toggle the visibility of the dialog.

import viz
import vizdlg
viz.go()

#Create empty dialog
dlg = vizdlg.Dialog(title='Dialog title')

#Link dialog to center of window
viz.link(viz.CenterCenter,dlg)

#Toggle dialog visibility when spacebar is pressed
vizact.onkeydown(' ',dlg.visible,viz.TOGGLE)

viz.add('gallery.ive')