The height of the display canvas in pixels.
<display>
The canvasheight property returns the height of canvas as determined by the constraints specified in the canvassize, canvasposition, and canvasaspectratio attributes.
The following displays the value of canvasheight in a text stimulus:
<text sometext>
/ items= ("canvasheight = <% display.canvasheight %>")
</text>
The following displays the value of canvasheight in an instruction page:
<page somepage>
canvasheight = <% display.canvasheight %>
</page>