Greeings, I want to write a code by which I can modify a picture included in the picturebox by clicking on it and click event puts a red dot on the postion of click. I want to save the image along with the dot I have put on the image. But saving it just saves the real image and no dots get included. Following is the code. I am using CF 2.0.
On event of click of picture box
{
Bitmap bmp = new Bitmap(pictureBox1.Image);
Graphics g = Graphics.FromImage(bmp);
SolitBrush redbrush = new SolidBrush(Color.Red);
Rectangle rect = new Rectangle(mouse_x - 6, mouse_y - 6, 12, 12);
float statangle = 0.0F;
float sweepangle = 360.0F;
g.FillPie(redbrush, rect,startangle, sweepangle);
pictureBox1.Image.Save(C:\\blablabla...");
}
mouse_x and mouse_y are obtained from mousemove event and MouseEventArgs e
x_mouse = e.X;
y_mouse = e.Y;
Any help would be greatly appreciated!!!
Arpit Arora
Saving image after modification on a pocket pc 2003
C#2.0
Try this:
http://www.microsoft.com/downloads/details.aspx FamilyID=554acd82-d87d-43c6-a984-8c625387b198&displaylang=en
StephenWalker
Grumble, I think the forum web page god ate my last post.
Unforetunately the NotSupportedException is the correct result. Its not very clear but really support in CF for the various image format depends upon support in the OS. Internally CF doesn't implement any of the various encoding and decoding algorithms (size reasons mostly) so instead we call the native image encoding functions provided by the OS. In the case of WindowsMobile 2003 JPGs can be read but not written by the native APIs which is why we also return NotSupportedException. Sorry for the bad news but hope that clarifies things,
-Noah
.Net Compact Framework
wabo
thanks alot noah...i got it.
Cheers
Arpit Arora
rax
Remco van Reij
When you make a new Bitmap you have copied the image that was in the picturebox. Then the graphics object is operating on your copy rather than the on screen image. Saving the original image therefore won't have the dot which was added in the copy. In order to update the image being used by the PictureBox you should add:
pictureBox1.Image = bmp;
After that you could use
pictureBox1.Image.Save() or just bmp.Save() since they now refer to the same updated Bitmap.
Also I should mention that the above code didn't draw any dot on the screen when I tried it. Since Graphics.FillPie isn't supported on NetCF (you can use FillElipse instead ) I am guessing that the code above isn't exactly what you ran which would explain the discrepancy.
Hope that works for you,
-Noah Falk
.Net Compact Framework
Vignesh_dev
Thanks noah, hope its made fine in the future version of visual studio.
Arpit.
Shawnk
k, although i got it working on the pocket PC, i cant save the image as a jpg file. Image Format 'Jpeg' is shown supported. Following is the code that works when I save the image as a bitmap file.
Bitmap bmp = new Bitmap(pictureBox1.Image);
Graphics g = Graphics.FromImage(bmp);
SolidBrush redbrush = new SolidBrush(Color.Red);
Rectangle rect = new Rectangle(mouse_x - 4, mouse_y - 4, 8, 8);
g.FillEllipse(redbrush, rect);
pictureBox1.Image = bmp;
pictureBox1.Refresh();
bmp.Save("SD Card\\blank.bmp", System.Drawing.Imaging.ImageFormat.Bmp);
But when I change the last line of the above code to
bmp.Save("SD Card\\blank.jpg", System.Drawing.Imaging.ImageFormat.Jpeg);
then NotSupportedException was unhandled pops up at debuging even though Image Format of Jpeg is supported in CF 2.0. for mobile 2003.
Any suggestions..
Arpit Arora