Determines control's location when form is running

Question

3.50/5 (2 votes)

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I've created a form with a textbox1 at the location (10,14).
Now calling another modal form named FORM2 by pressing F4 from that textbox1.
I want to display the FORM2, just below the textbox1 in run time.
But I cannot calculate the location of FORM2. Pls, help me. Thanks in advance.

Posted 8-Jun-11 8:11am

jdebabrata

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Sergey Alexandrovich Kryukov 8-Jun-11 17:27pm

I would say this UI trick is a bad style. However, implementation is quite easy. For example, you can avoid modal form (highly recommended in most cases), use different layout states withing the same form.
--SA

2 solutions

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Anthony Mushrow · Accepted Answer · 2011-06-08T08:23:00

Solution 1

Each control has a PointToScreen method which you can use to convert the local coords that you have into screen coordinates that you can place your new form at. So from your original form you should be able to do something like this:

void textBox1_KeyDown(...) //Assuming your using an event on the form for catching F4
{
  Point newFormPos = this.PointToScreen(new Point(10,40));
  newForm.Location = newFormPos;
  newForm.Show();
}

Posted 8-Jun-11 8:23am

Anthony Mushrow

Comments

OriginalGriff 8-Jun-11 14:31pm

I'd forgotten that! A better solution that mine - gets my 5!

Sergey Alexandrovich Kryukov 8-Jun-11 17:23pm

This is correct, my 5. I would also add that knowing this location might be a sign of bad style.
--SA

Monjurul Habib 8-Jun-11 18:50pm

nice answer , my 5.

OriginalGriff · Accepted Answer · 2011-06-08T08:24:00

Solution 2

Why not? It's pretty simple.

Form2 location is relative to the TLHC of the screen.
TextBox1 location is relative to the TLHC of the client area of Form1.

So, to place Form2 below TextBox1 add Form1.Location to TextBox1.Location, and offset it by the title bar thickness and the left hand border thickness, plus an offset to get it "just below".

Posted 8-Jun-11 8:24am

OriginalGriff

Comments

Sergey Alexandrovich Kryukov 8-Jun-11 17:25pm

Not as good as the one by SK Genius, only 4 :-)
Also, I would also add that knowing this location might be a sign of bad style.
I wonder why this is needed.
--SA

OriginalGriff 9-Jun-11 2:50am

I agree - That's why I gave him 5.
I can see what he is doing: He is trying to bring up a form that looks like it "belongs" to the parent, but that is not necessarily contained fully within it. Sort of the way a context menu works, but from the keyboard.