Question about the "spacers"

[Cantora]

above is the warning message while i am trying the example from reference. I am not sure which step i did a mistake to cause this message pop up.

anyone can point out my mistake?

thanks

[wysota]

Please don't use 3rd party sites to store images. Use the attachment feature of the forum instead. External images tend to vanish after some time and the thread becomes useless. Besides, your example clearly indicates using an external storage was a mistake - the image is too small to read anything.

[Cantora]

so sorry.. i am don't know got this such feature in this forum. I report my print screen again here.

[wysota]

Yeah, I thought it was something like that. You forgot to apply a layout on the whole widget. Click somewhere on the form to deselect any items and then click on one of the layout buttons in the toolbar.