Change initial view port size in paper space

[dynamicscope]

When I first draw something on a model space and click the Layout1 tab to see paper space.

The default view port size (the red box) looks like the following.

But I want to maximize the view port size such that (for example) the dotted line to be the defualt view port size in the paper space.

Could I do this by code??

I am currently using ObjectARX 2007 in C#.

Thank you in advance.

[augusto.goncalves]

You would need to access the Viewport on the Layout, then set its Height and Width

This post show how to access the viewport, just change the end of the code to adjust the height and width: http://adndevblog.typepad.com/autocad/2012/08/changing-zoom-in-paperspace-viewport.html

[dynamicscope]

Awesome!!
I can tweak a little bit and use it.

Now I am wondering what the dotted border is??
Is it possible to get the width and height of the dotted border??

[dynamicscope]

Oh, it was the PlotPaperMargins...
I did this and achieved what I wanted!!

vp.Width = layoutObj.PlotPaperSize.Y - (layoutObj.PlotPaperMargins.MinPoint.Y * 2);
vp.Height = layoutObj.PlotPaperSize.X - (layoutObj.PlotPaperMargins.MinPoint.X * 2);

[dynamicscope]

Actually... It doesn't quite work.

It only works once.

For example...

I run the AutoCAD and draw a circle and change the layout to Paperspace.

If you look at the command box,

PlotPaperSize : 297, 210

Viewport #2 : 205.6 156

so if I run below code....

...
// set the viewport parameters
if (vp.Number == 2)
{
	vp.UpgradeOpen();

	double width = layoutObj.PlotPaperSize.Y - (layoutObj.PlotPaperMargins.MinPoint.Y * 2);
	double height = layoutObj.PlotPaperSize.X - (layoutObj.PlotPaperMargins.MinPoint.X * 2);
	vp.Width = width;
	vp.Height = height;                                        

	// set the view height - adjusted by 1%
	vp.ViewHeight = mHeight * 1.01;                                        
	// set the view center
	vp.ViewCenter = mCentPt;
	vp.Visible = true;
	vp.On = true;                                        
	vp.UpdateDisplay();
	ed.SwitchToModelSpace();
	Application.SetSystemVariable("CVPORT", vp.Number);
}
...

I get what I want...

However, after I create a new drawing and do the exactly same procedure....

I get....

Note, PlotPaperSize : 279, 215

But Viewport #2 : 8, 6

As a result if I run the same code as above...

I get...

.....this....

Does this mean that the white space size is not PlotPaperSize????

What could have been gone wrong?

😞