For my "learn to draw" book (I just have finished... + 50 pages !) I have used a big dimension for the drawing area : 768 x 1024 ! (and not 1024 x 768 !)...
So the render window was too big on the screen to see my drawings...
NO problem : Only right-click on the render window and move the mouse to see "all" !!!
Incredible...
I thought it didn't work !?! I tried the left-click "for a long time" and I couldn't make this !?! And I have discovered the trick with the right-click by chance !?!
But it's true ! It works with the left-click too !?!
Maybe I have to sleep a little more !?!
It is strange. My linux version always fit the render window in the screen area if the size of the rendered image is bigger than the screen dimensions. Also the rendered image is zoomed to 1:1 size so I have to drag it with the right or left mouse buttons to see all the image. No right or left click menu appears.
@genete
that's what he means
at first, I was also confused, because I thought "I know that with left click but it will zoom out when I click ohne the right mousebutton?"
but now we know: left and right is the same