I have this small application which capture the screen and save it as a pdf. I am running this application on my PC which has 1080P primary display and 1080P TV as an extended display. When i put the application on the extended TV display (full screen mode) it doesn't capture entire screen. It capture only 1/4 of the screen. But i want to capture the entire screen. How do i fix this. Please help
Here is the code;
Private Sub SaveForm_shift1()
Dim yesterday As String = DateTime.Now.ToString("yyyy-MM-dd")
Dim filePath As String = "C:\Autodesk" + yesterday + ".jpg"
Dim bmpScreenshot As Bitmap = New Bitmap(Width, Height, PixelFormat.Format32bppArgb)
Dim gfxScreenshot As Graphics = Graphics.FromImage(bmpScreenshot)
gfxScreenshot.CopyFromScreen(Me.Location.X, Me.Location.Y, 0, 0, Me.Size, CopyPixelOperation.SourceCopy)
Try
gfxScreenshot.Dispose()
' Save the screenshot
bmpScreenshot.Save(filePath)
saveToPdf_shift1(filePath)
deleteImg(filePath)
Catch ex As Exception
MessageBox.Show(ex.ToString)
End Try
End Sub
Use this function to get a Bitmap with all the screens
Public Function GetScreenShot() As Bitmap
Dim bmp As Bitmap = New Bitmap(Screen.AllScreens.Sum(Function(s As Screen) s.Bounds.Width),
Screen.AllScreens.Max(Function(s As Screen) s.Bounds.Height))
Dim gfx As Graphics = Graphics.FromImage(bmp)
gfx.CopyFromScreen(New Point(0, 0), New Point(0, 0), bmp.Size)
Return bmp
End Function
If you have strange staggered screen positions, the empty areas will be black in the resulting bitmap.
Related
I am currently trying to save a windows form as an image, and I have been able to using the following code:
Dim frm = Me
Using bmp = New Bitmap(frm.Width, frm.Height)
frm.DrawToBitmap(bmp, New Rectangle(0, 0, bmp.Width, bmp.Height))
bmp.Save("D:\programs\files\image.png")
End Using
However, the image includes the borders of the form.
Is there any way to save the image without the borders?
Can you change the border style to none before the picture, then add it back after you save the picture... something like...
Dim frm = Me
frm.FormBorderStyle = FormBorderStyle.None
Using bmp = New Bitmap(frm.Width, frm.Height)
frm.DrawToBitmap(bmp, New Rectangle(0, 0, bmp.Width, bmp.Height))
bmp.Save("D:\programs\files\image.png")
End Using
frm.FormBorderStyle = FormBorderStyle.FixedSingle
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 an application that loads a spashscreen which loads a picture and centers this for a set length of time.
The issue I have is that the file used by splashscreen is locked and I can not make any modifications or replace it etc. until application is unloaded.
I am using the default VB net Spashscreen method and the code I use for the image is below
Dim Advert As System.Drawing.Image = Image.FromFile("Y:\Test\TestPic.jpg")
Dim width As Integer = Advert.Width
Dim height As Integer = Advert.Height
Me.BackgroundImage = Advert
Me.BackgroundImageLayout = ImageLayout.Stretch
Me.Size = New Size(width, height)
Me.CenterToScreen()
and then this code in the application events to overide the display time
Protected Overrides Function OnInitialize(ByVal commandLineArgs As
System.Collections.ObjectModel.ReadOnlyCollection(Of String)) As Boolean
Me.MinimumSplashScreenDisplayTime = 7000
Return MyBase.OnInitialize(commandLineArgs)
End Function
Is there a way to release the image file when the splash screen closes.
i'm trying set picturebox image in thread but i cant set it
take screenshot in specific window
set picturebox image to screenshot
This codes can get screenshot in specific window but cant set picturebox image to it. Whats wrong?
Public Function PrintWindow(hwnd As IntPtr) As Bitmap
Dim rc As RECT
GetWindowRect(hwnd, rc)
Dim bmp As New Bitmap(rc.Width, rc.Height, PixelFormat.Format32bppArgb)
Dim gfxBmp As Graphics = Graphics.FromImage(bmp)
Dim hdcBitmap As IntPtr = gfxBmp.GetHdc()
PrintWindow(hwnd, hdcBitmap, 0)
gfxBmp.ReleaseHdc(hdcBitmap)
gfxBmp.Dispose()
Return bmp
End Function
Dim OverviewRefresherThread As New Thread(AddressOf RefreshOverviewThread)
Public Sub RefreshOverviewThread()
Do
MainWindow.PictureBox.Image = PrintWindow(WindowHandle("TEST"))
Loop
End Sub
thanks...
Am I right? You are tying to get a screenshot from Whatever and transfer it in Picturebox? If so then take a look at this code.
Dim bounds As Rectangle
Dim screenshot As System.Drawing.Bitmap
Dim graph As Graphics
bounds = Screen.PrimaryScreen.Bounds
screenshot = New System.Drawing.Bitmap(bounds.Width, bounds.Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb)
graph = Graphics.FromImage(screenshot)
graph.CopyFromScreen(bounds.X, bounds.Y, 0, 0, bounds.Size, CopyPixelOperation.SourceCopy)
PictureBox1.Image = screenshot
This code takes a screenshot of the desktop and transfer it in picbox.
You can see tutorial here.
http://vb6.wonderhowto.com/how-to/capture-desktop-screen-with-vb-net-0158485/
If im not mistaken you already done with the screenshot you just need to transfer it and thats your problem.
I have the code below to draw a partial image according to the value given in numericalUpDown control:
'Creates a new Bitmap from an existing image
Dim cards As New Bitmap(My.Resources.bar)
' Draws the rectangle
Dim srcRect As New Rectangle(0, 0, 22, NumericUpDown1.Value)
' Clones the partial image from the original image
Dim card As Bitmap = DirectCast(cards.Clone(srcRect, cards.PixelFormat), Bitmap)
'Locates the new image into the picturebox
PictureBox1.Image = card
It starts painting from top to down, but I want to start showing the image partials from bottom to top.
Any ideas?