I am creating a user control with several methods, each method should
draw something in my user control; from a winform, I should use:
myControl.ShowBands or myControl.ShowLabels, etc.; but I don't know how
to do that, because all the logic to draw should be in the Paint event,

We are working on a large project. Main functionality is accessing database
with ado.net. A small corner of the project contains some graphics (Bitmaps)
analysis. We all know a lot about ADO.Net but not so much about graphics. So
I hope this newsgroups can point us to the right way. ...

In my .NET application I have some text rendered through GDI.
It draws and print nicely.
Now I would like to implement image export.
So I create a

I have read a good article on GDI/GDI+ by Lars Powers.
( http://www.code-magazine.com/Article.aspx?quickid=0305061 )
Unfortunately the sources are missing on the indicated web site.
I would like to know if some of you have them or something similar in C#.

How do you clear an image in a Picturebox control?  Do you simply set it
to nullptr?
ie:  pictureBox1->Image = nullptr;
Do you have to rely on the garbage collector or can you deterministicly

In my .NET app I have to use some home-made, Uniscribe based, text drawing
with ScriptTextOut which, ultimately, calls ExtTextOut..
I would like to setup things like text quality, anti aliasing, etc....
What API should I look into?

In my (C#) code I have some painting methods using Interop and GDI (win32).
Unfortunately, as you might know, you have to apply some transformation to
your space and fonts if you want to achieve WYSIWIG result with GDI
(as summarized here:

I am using GDI+ to load a tiff image and write a string to it and save the
tiff image to another file.
I can save the image with only LZW Compression and not abel to save with
CCITT4 compression. If I use CCITT4 compression I get an invalid paramter

i sent image byte via bt from j2me phone to c# application,
after i have to create image using this code:
...
byte[] pixels

I am using Bob's primitive class to render objects on the screen, and
perform hit tests to see if the mouse moves over any object (code below).
Public Overridable Function HitTest(ByVal p As Point) As Boolean
       Return (New Rectangle(Me.m_Location, Me.m_Size)).Contains(p)

How do you convert a 24-bit color image into a 256-shades-of-gray image?
Thanks,
Shawn

***Please let me know if this is the correct forum for this question.
I am having problems with a picture box as follows:
I have an asynchronous WinForm application that communicates with an
ASCII based text radio  and saves data to a database. The 'guts' of the

I sometimes got some AccessViolationException from System.Drawing.dll. It
doesn't happen everytime but it happens like once a day. Is it a known issue
in .NET 2.0? I've never got this kind of exception in .NET 1.1 (even NullReferenceException)
System.AccessViolationException: ...

With this code:
Font f = new Font("Microsoft Sans Serif",20 );
LOGFONT lf = new LOGFONT();
f.ToLogFont(lf);

I am using .NET 2.0 and building a custom control.  There are multiple
graphics elements that I would like to render on the surface.  When drawn
together they form the complete control image but need to be managed
separately because they might have different scale, units, move ...