calback from %pl graphics region

Is it possible to have a callback from a %pl graphics region?

For example, I plot results based on calculations onto a %pl region and would like to be able to position the mouse over certain peaks on the plot and have a textbox tell me the values on the plot.

Looking through the documentation it doesn't seem as though it is possible. I did start to write my own graphics routines based on %gr, as that surface allows callbacks. I managed some simple plots with axis's, but whenever I implemented the callback with the mouse to indicate values on the plot the whole program became unstable, with irregular crashing of the application.

Also, as I plan to do more complicated graphs in the future, I would very much like to be able to use the simpleplot library.

Many thanks

Albert

Although it is not documented, %pl should support a callback function but a simple bug in the library prevents it from being accepted.

I have fixed the bug so you will be able to implement a callback with the next release of salflibc.dll.

The callback reasons include MOUSE_LEFT_CLICK and MOUSE_RIGHT_CLICK.

Thanks, when is the next version od salflibc available?

regards

Albert

With the next full release of FTN95 which could be towards the end of the year.

If you need it straight away you could negotiate a fee with Silverfrost.

Thanks Paul, I'm using the personal edition, I'm afraid the the full price version is out of my reach.

Regards

Albert

I have just read in this topic that it is now possible to use a call-back function in the %pl window and from the Help file it is stated that '%pl is designed to be similar to %gr'. Does it mean that one can use the mouse input to draw a line or a rectangle as in %gr window? Or what can I really do inside a %pl window with call-backs? I am asking this because I was trying to draw a line inside %pl following the examples given for %gr and it did not work. Probably I am missunderstanding something....

Agustin

%pl does not provide the same functionality as %gr. What you can do in a callback will be limited to detecting mouse clicks (say) and providing your own code in response.