I've been struggling with this problem for days on and off. Hopefully
somebody has some insight in this. I have a usercontrol which is placed
on a form. When the control gets the paint event, I use a memory bitmap
to draw on and then blit it back to the original DC (from the

I'm going some drawing via "Graphics" in a "Paint" callback and the commands
will only manifest themselves if I minimise the window and then maximise it
again.
I'm new to windows programming and so I am obviously missing a lot of the

I want to use InvalidateRect from user32.dll. It seems that it doesn't
really invalidate a rectangle. The whole screen can be refreshed with
InvalidateRect(IntPtr.Zero,IntPtr.Zero,true).
But how can I refresh a rectangle? I need this function because I draw

I am trying to add EXIF properties to my JPEG pictures taken w/ a Canon
digital camera.  The fields I want to add related to GPS data.
I have tried the suggestions listed at:
http://www.pixvillage.com/blogs/devblog/archive/2005/03/27/176.aspx

Hi guys! I am back with an easy question.
Pamela
I have this task to do. Seems crazy but Later I will explain
the reason. Can anybody provide me with a simple answer.

Hi, I'm having a problem with trying to make the text of a button both
bold and italic at runtime. All that i have so far is Button.Font = New
Font("sans seriff", 9, FontStyle.Italic), but i need to make it bold as
well as italic at the same time. Thanks a lot.

i posted this erlier to the other group but got no response :(
so i'm trying now this one...
according to the documentation System.Drawing.Font is serializable, well
at least it should be because it implements ISerializable. but when i

I have the following code...
Bitmap bitmap = new Bitmap((int)new_width, (int)new_height,
m_src_image.PixelFormat);
m_graphics = Graphics.FromImage(bitmap);

i save a compressed bitmap to an image field in my sql database:
ImageCodecInfo iciJPEG;
 foreach (ImageCodecInfo cdc in ImageCodecInfo.GetImageEncoders())
 {

to create my own control i need to derive from System.Windows.Forms.Control
but, my control is sooooo simple - it draws only line, a separator-like
line, with a custom color and width. i dont need handling any user input
and do not use any fancy drawing routines nor i do not ...

I'm running a WinCE4.1 Compact Framework application using VS2003.
While I run this code, I get an error saying NotSupportedException.
private void panel1_Paint(object sender, PaintEventArgs e)
{

My code is the following:
public Bitmap myConvertBitmapToGrayscale( Bitmap i)
{
    Bitmap b = new Bitmap(i.Width, i.Height,

        Whenever,I use Override Paint to handle my drawings on pictureBox,I
see that the form does not load and gives null argument exception.
Can anyone tell what causes this??
regards

I'm a beginner in graphics programming. I have the following situation:
I have to show existing bitmap in the control on the form and then put one
or several transparent layers over it which will be used for drawing.
Which control to use to load the existing bitmap on o form? Will ...

I'm trying to display a PNG on a form in my VB.NET application, but it will only display a cropped portion of the image.  I'm using the following:
Dim gr As Graphics = Me.CreateGraphics
Dim img As Image = Bitmap.FromFile(<Path to PNG file>)
gr.DrawImage(img, CInt(50), CSng(50), ...