QT openGL Dynamic Line Depends on Height and Width

horderon

Hello guys.
I want to select a line that has his width and height. Height and width will be entered from form or something, depends on this h and w has entered, i will put the line to the screen.H and W can be entered many times, each times i will put new line to screen wherever i want. I didn't find any correct solution for this. Can you show me a way or example for this?

jsulm

@horderon said in QT openGL Dynamic Line Depends on Height and Width:

I want to select a line

I guess you want to DRAW a line, right?
What exactly is the problem?

How to draw a line
How to let the user enter height/width

horderon

Yes. I will enter H and W, depends this h and w there will be line on the screen, thats all.

horderon

@jsulm I want to use this 2 problem together. In form or something there will be two value, H and W. For example when i enter H = 3, W=4 , there will be line on the screen has his width(4) and (height). Sorry for grammer.

jsulm

@horderon But what is the problem you have? Where do you need help?

horderon

@jsulm I'm new on Cpp and QT . Just doing basic mouseover lines. Bu didn't do dynamically. I'm looking for any documentation or example for my problem.

horderon

Can anyone give me an example or documentation for read?

kenchan

@horderon

If you want to do interactive graphics this
http://doc.qt.io/qt-5/qgraphicsscene.html
and this
http://doc.qt.io/qt-5/qgraphicsview.html
are a good place to start.