This is an example of using Getpixel and SetPixel. For (much much) faster filter results look into Lockbits and also into using a ColorMatrix private void button2_Click(object sender, EventArgs e) { // we pull the bitmap from the image Bitmap bmp = (Bitmap) pictureBox1.Image; // we change some picels for (int y = 100; y … Read more
You need to address two issues: Clip the Graphics area to the actual Image instead of the whole PictureBox.ClientArea Scale the coordinates of the mouse events to the actual image when receiving and recording them and back again when you use them to draw in the Paint event. For both we need to know the … Read more
You have different options: You can draw a resizable frame on the picture box You can create a resizable control and add it to picture box In this answer, I’ve taken the second option to be able to use built-in sizing features of the controls. Here is a screen capture which shows how it looks … Read more
I don’t think there is a real memory leak. The problem is that you don’t dispose the old bitmap, it is up to the GC to clean the stuff. But there is no deterministic way to say when this will happen. So i think if you’re going to loop through a lot of pictures, you’ll … Read more
One way to do this is by changing the parent of the overlapping picture box to the PictureBox over which it is lapping. Since the Visual Studio designer doesn’t allow you to add a PictureBox to a PictureBox, this will have to be done in your code (Form1.cs) and within the Intializing function: public Form1() … Read more
Make sure the image in pictureBox3 is transparent. Set the BackColor to transparent. In code, set the Parent property of the pictureBox3 to be pictureBox2. Adjust the Location coordinates of pictureBox3 since they will be relative to the coordinates of pictureBox2 once you’ve changed the Parent. private void Form1_Load(object sender, EventArgs e) { pictureBox3.Parent = … Read more
The problem: A Bitmap, with a size that is much smaller than the container used to show it, is blurred and the otherwise sharp edges of the well-defined areas of color are unceremoniously blended. This is just the result of a Bilinear filter applied to a really small image (a few pixels) when zoomed in. … Read more
Try this pictureBox.Image.Save(@”Path”,ImageFormat.Jpeg);
If you want to overlay images over images (and not images over form), this would make the trick: overImage.Parent = backImage; overImage.BackColor = Color.Transparent; overImage.Location = thePointRelativeToTheBackImage; Where overImage and backImage are PictureBox with png (with transparent background). This is because, as said before, the transparency of an image is rendered using the back color … Read more
Well since getting no help i bashed away at the problem and got it to work finally. Here is my working code. SAVE TO MySQL out of Picturebox (pbPicture) Dim filename As String = txtName.Text + “.jpg” Dim FileSize As UInt32 conn.Close() Dim mstream As New System.IO.MemoryStream() PbPicture.Image.Save(mstream, System.Drawing.Imaging.ImageFormat.Jpeg) Dim arrImage() As Byte = mstream.GetBuffer() … Read more