Is it correct that I may not have a window that is wider than the screen? If I drag a window to the left and out, I can't extend it to the right hand side. It didn't matter whether I activate easy dragging outside the screen in "GUI" or press shift to do it.

I found out it is incorrect. But I noticed two MUI applications didn't allow a wide window, AmigaShell did. When the shell window was overwide, moving it went super sluggish. That is with hardware compositing and about 90 MB VRAM available.

@Thematic

On AmigaOS you can't have a window wider than the screen ... until recently.

The 3.1.4 version of intuition.library will let you do it and so does AmigaOS 4.x.

@Thematic

Quote:

Yes indeed you can have a window that is wider thn the screen.

Quote:

You probably increased the windows bitmaps width to wider than the limit for hardware compositing. (which varies from card to card) .

@broadblues

Then I'm guessing the compositing limit is 1920 wide in my case (newshell command doesn't seem to do this, or I do not know about it, so it's set manually).

@Thematic

It's probably 2048 (2k), but window bitmaps are a bit larger than the window size (allowing for shadows etc) so the practical limit for screen and window size is a bit less than that.

On my SAM with a R9250 card I can in principle just get a HD (1920x1080) screen (though I have a older 1280 sized monitor so don't try) so the practical limit is probably just alittle more than 1920 thus only a small increase in window size from the HD screen width will hit that limit.