Using WHITE when printing

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andersb
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Using WHITE when printing

Postby andersb » Sun Nov 23, 2008 11:03 am

When I use white in a drawing (e.g. rgb 255,255,255) and print it, black is printed instead.
If I use "nearly white" (e.g. rgb 254,25,255), then it is printed correctly.

How do I do if I want to use white in drawings?

Thanks
/anders

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andrew
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Postby andrew » Mon Nov 24, 2008 10:29 am

You can indeed not print white with QCAD. The reason for this behavior is that you can draw white on black with QCAD and later print the drawing black on white without having to change the color of your entities.

May I ask what the reason is that you want to print white on white?

andersb
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Postby andersb » Mon Nov 24, 2008 11:01 am

OK, but the "white" is substituted even if the "black/white-mode" is off!?!

The reason for my need is that it was the easiest way I found to, for example "drill a hole" on an area.
I use QCAD for drawing templates for etching.
In some views, parts of a detail needs to be covered with white, where on other views it should be visible. Sometimes its a little hard to divide that part into different layers to control visibility in different situations.
Perhaps some kind of AND/OR/XOR function would be usable for that...
But the easiest way would be to allow white (or "backgound color"...) in printing.

At the moment using "nearly white" works fairly well.

Thanks
Last edited by andersb on Mon Nov 24, 2008 12:06 pm, edited 1 time in total.

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andrew
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Postby andrew » Mon Nov 24, 2008 11:33 am

andersb wrote:OK, but the "white" is substituted even if the "black/white-mode" is off!?!


Black / white means that everything is printed in black (on white paper) as opposed to color or grayscale.

andersb
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Postby andersb » Mon Nov 24, 2008 12:10 pm

andrew wrote:
andersb wrote:OK, but the "white" is substituted even if the "black/white-mode" is off!?!


Black / white means that everything is printed in black (on white paper) as opposed to color or grayscale.


Ok, perhaps that could be made optional - or besides the color "black/white", there could also be "true black" and "true white"?

Or is there a way I could use that is better for my needs?

/anders

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andrew
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Postby andrew » Mon Nov 24, 2008 12:21 pm

Your use of colors is quite exceptional. I cannot think of a better way than what you are already doing (use a color that is almost white).


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