Update a Draw - C# / C Sharp

Luis Arnauth

Hello,

I've got a small aplication where i design a small scheme using
System.Drawing.

I need to use a NumericUpDown control to change some text i've draw.

I have all the code under:
protected override void OnPaint(PaintEv entArgs paintEvent)

How can i update my draws with new values ?

Thank you

Luis Arnauth

May 8 '06 #1

Subscribe Reply

2203

Tim Wilson

Are you drawing directly on the form or is the drawing being done in a
custom control? If it's the form, then when the value of the NumericUpDown
control changes call the Invalidate method on the form, to request a
repaint, and ensure that you're using the value from the NumericUpDown
control in the OnPaint method.

--
Tim Wilson
..NET Compact Framework MVP

"Luis Arnauth" <lu**@arnauth.n et> wrote in message
news:%2******** ********@TK2MSF TNGP04.phx.gbl. ..

Hello,

I've got a small aplication where i design a small scheme using
System.Drawing.

I need to use a NumericUpDown control to change some text i've draw.

I have all the code under:
protected override void OnPaint(PaintEv entArgs paintEvent)

How can i update my draws with new values ?

Thank you

Luis Arnauth

May 8 '06 #2

Luis Arnauth

I'm drawing directly on the form using

protected override void OnPaint(PaintEv entArgs paintEvent)

inside there are some circles and text.
I need to know how to refresh the text portion after the user change some
values.

is the method correct for doing this ?

Luis Arnauth

"Tim Wilson" <TIM(UNDERSCORE )WILSON(AT)ROGE RS(PERIOD)COM> wrote in message
news:%2******** ********@TK2MSF TNGP05.phx.gbl. ..

Are you drawing directly on the form or is the drawing being done in a
custom control? If it's the form, then when the value of the NumericUpDown
control changes call the Invalidate method on the form, to request a
repaint, and ensure that you're using the value from the NumericUpDown
control in the OnPaint method.

--
Tim Wilson
.NET Compact Framework MVP

"Luis Arnauth" <lu**@arnauth.n et> wrote in message
news:%2******** ********@TK2MSF TNGP04.phx.gbl. ..
Hello,

I've got a small aplication where i design a small scheme using
System.Drawing.

I need to use a NumericUpDown control to change some text i've draw.

I have all the code under:
protected override void OnPaint(PaintEv entArgs paintEvent)

How can i update my draws with new values ?

Thank you

Luis Arnauth

May 11 '06 #3

Tim Wilson

Yes. Just call the Invalidate method on the form when the value has changed
and it will cause the OnPaint method to be called. In the OnPaint method
draw the text.

--
Tim Wilson
..NET Compact Framework MVP

"Luis Arnauth" <lu**@arnauth.n et> wrote in message
news:Od******** ******@TK2MSFTN GP05.phx.gbl...

I'm drawing directly on the form using

protected override void OnPaint(PaintEv entArgs paintEvent)

inside there are some circles and text.
I need to know how to refresh the text portion after the user change some
values.

is the method correct for doing this ?

Luis Arnauth

"Tim Wilson" <TIM(UNDERSCORE )WILSON(AT)ROGE RS(PERIOD)COM> wrote in message
news:%2******** ********@TK2MSF TNGP05.phx.gbl. ..
Are you drawing directly on the form or is the drawing being done in a
custom control? If it's the form, then when the value of the
NumericUpDown control changes call the Invalidate method on the form, to
request a repaint, and ensure that you're using the value from the
NumericUpDown control in the OnPaint method.

--
Tim Wilson
.NET Compact Framework MVP

"Luis Arnauth" <lu**@arnauth.n et> wrote in message
news:%2******** ********@TK2MSF TNGP04.phx.gbl. ..
Hello,

I've got a small aplication where i design a small scheme using
System.Drawing.

I need to use a NumericUpDown control to change some text i've draw.

I have all the code under:
protected override void OnPaint(PaintEv entArgs paintEvent)

How can i update my draws with new values ?

Thank you

Luis Arnauth

May 11 '06 #4

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