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[LitusSaxonicum]

Even the line style options only really work for 1 pixel wide lines.

You have three options after you have exhausted filled and outlined squares and circles as markers, and they are:

(1) draw the markers with lines - easy ones are + or x crosses, more difficult shapes are possible, and worth coding a subroutine or two for,

(2) draw a bitmap and import or place that with IMPORT_IMAGE@ (there are other related routines too)

(3) draw characters from a font such as Wingdings

Eddie

[LitusSaxonicum]

If you use an installation program like Jordan Russell's InnoSetup, you can arrange to have the font installed at the same time as sallflibc.dll and the exe file are installed. You can find the size of the character with GET_TEXT_SIZE@, and then offset it left and down by half that amount, remembering that left is minus and down is plus (always confuses an upper right quadrant enthusiast like myself!). Many fonts have a few symbols anyway.

A long time ago in a computer faraway I decided that labelling contours a, b, c etc caused me fewer spacing and positioning errors than 1, 2, 3 etc, because there are more letters than single numerals, especially if lower and upper cases letters are chosen, and most users recognise the sequence. For that application I made the letters all align on several vertical and horizontal lines through the graphic, as I worked out in my mind that rotating them to align with the contour itself was too much work!

As far as marking nodes with symbols goes, you may or may not need to draw a background-colour rectangle first.

Eddie

[LitusSaxonicum]

Ah, just a ramble because it was raining and I couldn't go out!

Your problem, as I understand it is that you want symbols (say) on a graph where the line changes direction, i.e. at salient points. My previous answer to use one character from a symbol font, and to offset it by half the character height and width so that it is centered over the salient point. So far, so good. What I should have done, perhaps, was to discuss the issue of what size to make the symbols, and what one might do if there are too many too close together, so that the marker symbols overlap, and obscure the line itself

But I was distracted, and when I returned to it, I was thinking about a different problem!

Eddie

[DanRRight]

Will add that you can also place an icon though that may hiccup and icon sometimes slides to upper left corner and loses ability to be moved with mouse touch and drag (most probably that is due to my own bug somewhere, the simple program doesn't hiccup. Curious if others got the same sometimes)

But in general adding symbols by font manipulation or other ways for 2D graphics in CWP is very powerful and simple. Really increfibly well done.

It is 3D OpenGL where font manipulation and plot marking are the living hell for Fortran users. Very few people so far even touched OpenGL with Fortran. But the trend is that many codes now move to 3D and so the 3D graphics has the future. We need quick and easy solutions here.