Drawing a single pixel

[Rob T]

This seems like a really stupid question, but here it goes........

is there a command to draw a single pixel?

The closest I can get is to draw a line that is 2 pixels wide, or do create
another image that's 1x1 with the color of the pixel, then do a DrawImage to
insert that image into the 'master' image...which seems like a huge waste!

Thanks.

 

[Herfried K. Wagner [MVP]]

[Drawing a single pixel]

\\\
Private Sub Form1_Paint( _
ByVal sender As Object, _
ByVal e As PaintEventArgs _
) Handles MyBase.Paint
e.Graphics.FillRectangle( _
Brushes.Red, _
New Rectangle(100, 100, 1, 1) _
)
End Sub
///

 

[Bob Powell [MVP]]

See the GDI+ FAQ.

--
Bob Powell [MVP]
Visual C#, System.Drawing

Find great Windows Forms articles in Windows Forms Tips and Tricks
http://www.bobpowell.net/tipstricks.htm

Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/faqmain.htm

All new articles provide code in C# and VB.NET.
Subscribe to the RSS feeds provided and never miss a new article.

 

[Bob Powell [MVP]]

What happens if the page units are set to inches? ;-)

--
Bob Powell [MVP]
Visual C#, System.Drawing

Find great Windows Forms articles in Windows Forms Tips and Tricks
http://www.bobpowell.net/tipstricks.htm

Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/faqmain.htm

All new articles provide code in C# and VB.NET.
Subscribe to the RSS feeds provided and never miss a new article.

[Drawing a single pixel]

\\\
Private Sub Form1_Paint( _
ByVal sender As Object, _
ByVal e As PaintEventArgs _
) Handles MyBase.Paint
e.Graphics.FillRectangle( _
Brushes.Red, _
New Rectangle(100, 100, 1, 1) _
)
End Sub
///

 

[Herfried K. Wagner [MVP]]

Bob,

What happens if the page units are set to inches? ;-)

I read the article in your FAQ now and learned something new .

 

[Rob T]

Good trick with the -1 for the pen width. Drawing the rectangle worked
fine. you still can't draw a line unless it's more than one pixel long:
objGraphics.DrawLine(New Pen(Color.Black, -1), New Point(5,5), New
Point(5,5)) Doesn't work.

No big deal if the FillRectangle works.......

Thanks guys!

BTW Bob. I adapted your c# graphics editor into a little VB app this week.
It's a bit different from yours now, I you had some good trick in yours that
I was able to adapt. Thanks!

 

[Bob Powell [MVP]]

Excellent. I love it when people use my code!


--
Bob Powell [MVP]
Visual C#, System.Drawing

Find great Windows Forms articles in Windows Forms Tips and Tricks
http://www.bobpowell.net/tipstricks.htm

Answer those GDI+ questions with the GDI+ FAQ
http://www.bobpowell.net/faqmain.htm

All new articles provide code in C# and VB.NET.
Subscribe to the RSS feeds provided and never miss a new article.

Good trick with the -1 for the pen width. Drawing the rectangle worked
fine. you still can't draw a line unless it's more than one pixel long:
objGraphics.DrawLine(New Pen(Color.Black, -1), New Point(5,5), New
Point(5,5)) Doesn't work.

No big deal if the FillRectangle works.......

Thanks guys!

BTW Bob. I adapted your c# graphics editor into a little VB app this
week. It's a bit different from yours now, I you had some good trick in
yours that I was able to adapt. Thanks!

 

[Steve McLellan]

How different the A-Team could have been if that had been Hannibal's
motto...

"> Excellent. I love it when people use my code!

 

[Rob T]

Careful....you're showing you age!

How different the A-Team could have been if that had been Hannibal's
motto...

"> Excellent. I love it when people use my code!

 

[Steve McLellan]

I don't know... it was a long running series

Careful....you're showing you age!