On 10/03/11 02:25, Dave Rhodes wrote:
> I have wriiten an application, running on windows , compiled with cygwin. I want to stretch this over 2 screens. My screens are 2560 wide by 1600 high. The intial window will only open on one screen (ie I can't make the fltk main window > 2560), so I can click on the right hand edge and re-size the window. When the opengl window gets to 4096 pixels it will no longer re-size and hangs ( a call glGetIntegerv(GL_MAX_VIEWPORT_DIMS, HSize), returns 8092 for the max viewport). Conversly on my laptop which returns 4096 for the max viewport , I can create a glut window of 8092 before the viewport fails - in both cases there does not appear to be errors reported from opengl. The main startup fltk-glut  is similar to the fractals.cxx in the test program , which also exhibits the same resize/hangin
 g problem. Is this an fltk-glut intraction problem , or just an opengl/glut problem.

	Have you tried taking one of the example glut apps
	and making the window that large?

	I think in most multiscreen projection systems I've seen,
	the app makes a separate window for each screen, and sets the
	camera or viewport appropriately so that the screens
	stitch together predictably at the edges.