As you'll can see the first image is the size of (1024*768) and it is correctly displayed in the picturebox and in the second case the image size is (1600*900) and it is displayed to half of the picturebox and the remaining is missing .So No I would like to fir that image in the picturebox no matter what the size is and even though it is greater than the size of the picturebox.I need to scale that Image.So how do I do that?And one more thing is that I need to resize the picturebox automatically when the image loads to it just as we see in the lightbox effect..
http://www.lokeshdhakar.com/projects/lightbox2/ -------->example.
Any help will be appreciated!
Here is what I am getting.
If it's a winforms app, you can set the SizeMode property of the PictureBox to PictureBoxSizeMode.Zoom. Note that this will increase the size of smaller images to fill the frame, so you might want to measure the image first, in order to check if either edge is too long, and then setting SizeMode to either PictureBoxSizeMode.Zoom or PictureBoxSizeMode.Normal.
I know this is marked answered, but I wrote this for one of my own apps. Hope it helps somebody..
Private Sub ScaleImage(ByVal p As PictureBox, ByRef i As Bitmap)
If i.Height > p.Height Then
Dim diff As Integer = i.Height - p.Height
Dim Resized As Bitmap = New Bitmap(i, New Size(i.Width - diff, i.Height - diff))
i = Resized
End If
If i.Width > p.Width Then
Dim diff As Integer = i.Width - p.Width
Dim Resized As Bitmap = New Bitmap(i, New Size(i.Width - diff, i.Height - diff))
i = Resized
End If
End Sub
The two Easiest Ways to Fit an Image to Any Size of PictureBox is:
-to set the Image as Background Image
OR
-to set it as picturebox image then set sizemode to StretchImage
1.Background Image
-use the BackgroundImage property of the PictureBox
picturebox.BackgroundImage = Image.FromStream(New IO.MemoryStream(CType(data, Byte())))
-Then Set its BackgroundImageLayout to stretch Like This:
picturebox.BackgroundImageLayout = ImageLayout.Stretch
Image
-use the Image property of the PictureBox
picturebox.Image = Image.FromStream(New IO.MemoryStream(CType(data, Byte())))
-Then Set its' sizeMode to StretchImage Like This:
picturebox.SizeMode = PictureBoxSizeMode.StretchImage
This will make any Picture / Image / Canvas Stroke (converted to Byte Array) fit according to the height and width of the picturebox
Hope This Helps :)
Related
This question already has answers here:
Drawing Graphics Disappear in VB.net
(4 answers)
Closed 5 years ago.
I was successful in loading an image from a file into a picturebox in visual basic. Or so i thought. I had a msgbox in the code and the picture showed up in the picturebox. take the msgbox out and no picture. Any Ideas? Thanks
Private Sub DrawImageinSquarePanel(Panelname As PictureBox, ImageFile As String)
g = Panelname.CreateGraphics() 'creates new graphics element in panel
Dim newImage As Image = Image.FromFile(ImageFile) ' Create image.
Dim SquareDim As Integer 'Size of longest dimension in source image
If newImage.Width > newImage.Height Then
SquareDim = newImage.Width
Else
SquareDim = newImage.Height
End If
MsgBox(Panelname.Width & " " & Panelname.Height) 'the magic msgbox!!
' scale factor
Dim imageAttr As New ImageAttributes
imageAttr.SetGamma(Panelname.Width / SquareDim)
Dim ScaleFactor As Single = Panelname.Width / SquareDim
' Create rectangle for source and destination image.
Dim srcRect As New Rectangle(0, 0, newImage.Width, newImage.Height)
Dim destRect As New Rectangle((Panelname.Width - newImage.Width * ScaleFactor) / 2, (Panelname.Height - newImage.Height * ScaleFactor) / 2, newImage.Width * ScaleFactor, newImage.Height * ScaleFactor)
Dim units As GraphicsUnit = GraphicsUnit.Pixel
' Draw image to screen.
g.DrawImage(newImage, destRect, srcRect, units)
End Sub
Your title says "Picturebox" but there's no PictureBox there at all. If you want to display an Image in a PictureBox then assign the Image object to the Image property of that PictureBox.
Don't use GDI+ to draw it on a Panel and, if you ever do use GDI+ to draw, NEVER call CreateGraphics. Always draw on a control in its Paint event handler. The reason that your drawing disappears is that all drawing is erased on every Paint event. By doing your drawing in the Paint event handler, you ensure that it gets reinstated each time.
If you want to modify the image before displaying it then what you should do is create a new Bitmap object, use GDI+ to draw the modified image onto that and then assign that to the Image property of the PictureBox, e.g.
Using originalImage = Image.FromFile(filePath)
Dim newImage As New Bitmap(originalImage.Width, originalImage.Height)
Using g = Graphics.FromImage(newImage)
g.DrawImage(originalImage, Point.Empty)
End Using
'Dispose the existing image if there is one.
PictureBox1.Image?.Dispose()
PictureBox1.Image = newImage
End Using
I have a picturebox with SizeMode = Zoom and with an image (1200x600) in it.
I set form size = screen size and after I set and picturebox height size = screen height size.
How to set width of picturebox, using code, so as so the image (from picturebox) fits perfectly in picturebox even if it exceeds the screen size?
I work with Visual Basic code.
I have a picturebox as the main image and it has a filled rectangle drawn onto it. Then I have another picturebox which has an image and a label which has some text. I want to draw the second picturebox's image and the label's text onto the first picturebox's image and display it in a third picturebox.
I have the following code:
Dim BMP As New Bitmap(PicBanner.Image)
Dim g As Graphics = Graphics.FromImage(BMP)
Dim Brsh As New SolidBrush(Color.FromName(CBForeClr.SelectedItem))
g.DrawImageUnscaled(PicLogo.Image, PicLogo.Location.X, PicLogo.Location.Y)
g.DrawString(LblText.Text, LblText.Font, Brsh, LblText.Left, LblText.Top)
PicBanner.DrawToBitmap(BMP, New Rectangle(0, 0, PicPreview.Width, PicPreview.Height))
PicPreview.Image = BMP
Instead of drawing the picturebox's image and the text onto the first picturebox, it displays only the filled rectangle in the preview box.
What is wrong with my code?
I used the following code in a VB.Net forms application:
Dim btnShowHideSize As New Size(30, 30)
btnShowHide.Size = btnShowHideSize
Dim img As New Bitmap(Resources.change2)
Dim img2 As New Bitmap(img, btnShowHideSize)
btnShowHide.BackgroundImage = img2
btnShowHide.BackgroundImageLayout = ImageLayout.Stretch
The image will expand, but not shrink. When I step through, I see that img size is 80,80 and img2 size is 30,30. Howewver, the image is not shrinking - it is getting cut off. If I go above 80,80 e.g. 200,200, the image does expand.
Is shrinking an image not possible?
I want to capture the image of my webbrowser, or actually just a part of it.
I already achieved it, but it just takes a screenshot of it instead of capturing the bitmap itself.
So when i use this technique and you drag another window above it, the window is also captured. (this is what I don't want.)
My code:
' 1. Get the WebBrowsers bitmap.
Dim bmp As New Bitmap(WebBrowser1.Width, WebBrowser1.Height)
Dim BMPEndResult As Bitmap
Dim graph As Graphics = Graphics.FromImage(bmp)
Dim p As Point = Me.PointToScreen(WebBrowser1.Location)
graph.CopyFromScreen(p.X, p.Y, 0, 0, bmp.Size)
picDest.Image = bmp
So I need to get the image of the webbrowser:
- without the scrollbars if possible
- Even if the window is minimized or in the task bar
- Full webbrowser
- and also if possible just a part of it, where I can specify the top, left, width and height
WebBrowser.DrawToBitmap(bitmap, rectangle)