Please, is it only on form that a paint handler can be executed

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I drew a graph sheet on a windows form, I'm thinking of drawing it on separate control other than the form itself

Posted 28-Aug-14 0:57am

matmape

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[no name] 28-Aug-14 7:05am

Okay.... since this is not a question or a problem, you have permission to proceed.

Suvabrata Roy 28-Aug-14 7:22am

where did you stuck ?

matmape 28-Aug-14 8:36am

how to plot a linear equation on the graph

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OriginalGriff · Answer 1 · 2014-08-28T01:49:00

Solution 1

You can handle the Paint event on individual controls: a form is derived from control, and the Paint event is inherited.

It is very common to handle Paint for Panels and so forth to use them as a substitute for the PictureBox for example - but you can handle Paint for any control, including Buttons, TextBoxes and so forth.

The only thing you may have to do is call Invalidate on the control when you want to update it.

Posted 28-Aug-14 1:49am

OriginalGriff

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matmape 28-Aug-14 8:35am

I've done that(drew it on a picture box). The main work is how to now plot a linear equation on the drawn graph

Sergey Alexandrovich Kryukov 28-Aug-14 8:40am

Doing it on a PictureBox is possible but usually makes no sense. This control is redundant and developed to give a simplified way of holding a single fixed image which is already rendered. Rendering your own graphics is much simpler on a "empty" control, which can be a custom control, or Panel...
—SA

Sergey Alexandrovich Kryukov 28-Aug-14 8:40am

5ed.
—SA

matmape 28-Aug-14 8:42am

Where do u suggest i draw it onto

Sergey Alexandrovich Kryukov 28-Aug-14 8:53am

Both ways are fine. If you use a custom control, you can alternatively override OnPaint, which would make your class cleaner.
—SA

matmape 28-Aug-14 8:55am

ok, if you can push me forward a little on how to plot a linear equation graph, I will appreciate it. Thanks

Sergey Alexandrovich Kryukov 28-Aug-14 8:59am

What is the difference what equations? (And linear questions don't need a graph much :-)
Look at Microsoft Charts.
—SA