I am using VB .NET programming and I would like to print my WinFormsApplication in landscape mode as the portrait mode could not fit it properly.
I have set the landscape mode as true. You may refer to the code below:
Private Sub PrintAll_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Handles PrintAll.Click
PrintForm1.Form = Me
PrintDocument1.DefaultPageSettings.Landscape = True
PrintForm1.Print(Me, PowerPacks.Printing.PrintForm.PrintOption.FullWindow)
PrintDialog1.ShowDialog()
End Sub
And the result is shown as below in the screenshot
http://s335.photobucket.com/user/blakeex/media/notcomplete.png.html
Could anyone share some hint or guides?
to print the complete client area of a scrollable form, even if the form has been resized.
Try PrintForm1.Print(Me, PowerPacks.Printing.PrintForm.PrintOption.Scrollable)
Here's another way that will print whatever part of the form is viewable on the screen:
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
CaptureScreen()
PrintDocument1.DefaultPageSettings.Landscape = True
PrintDocument1.DefaultPageSettings.Margins = New Printing.Margins(0, 0, 0, 0)
PrintDocument1.Print()
End Sub
Dim memoryImage As Bitmap
Private Sub CaptureScreen()
Dim myGraphics As Graphics = Me.CreateGraphics()
Dim s As Size = Me.Size
memoryImage = New Bitmap(s.Width, s.Height, myGraphics)
Dim memoryGraphics As Graphics = Graphics.FromImage(memoryImage)
memoryGraphics.CopyFromScreen(Me.Location.X, Me.Location.Y, 0, 0, s)
End Sub
Private Sub printDocument1_PrintPage(ByVal sender As System.Object, ByVal e As System.Drawing.Printing.PrintPageEventArgs) Handles PrintDocument1.PrintPage
Dim pagerec As New RectangleF(e.PageSettings.PrintableArea.X, e.PageSettings.PrintableArea.Y, e.PageSettings.PrintableArea.Height, e.PageSettings.PrintableArea.Width)
e.Graphics.DrawImage(memoryImage, pagerec, New Rectangle(Me.Location, Me.Size), GraphicsUnit.Pixel)
End Sub
Related
I have used the following code to draw what I want but when I used this code I cannot see the image I set on my picturebox. What should I do to draw on the picture box with an image? Please help me with this.
Public Class Form1
Dim draw As Boolean
Dim DrawColor As Color = Color.Black
Dim DrawSize As Integer = 6
Dim bmp As Bitmap
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
cbxSize.SelectedIndex = 2
bmp = New Bitmap(pbDraw.Width, pbDraw.Height)
pbDraw.Image = bmp
Dim down = False
End Sub
Private Sub PaintBrush(X As Integer, Y As Integer)
Using g As Graphics = Graphics.FromImage(pbDraw.Image)
g.FillRectangle(New SolidBrush(DrawColor), New Rectangle(X, Y, DrawSize, DrawSize))
End Using
pbDraw.Refresh()
End Sub
Drawing event
Private Sub pbtest_MouseDown(sender As Object, e As System.Windows.Forms.MouseEventArgs) Handles pbDraw.MouseDown
draw = True
PaintBrush(e.X, e.Y)
End Sub
Private Sub pbtest_MouseMove(sender As Object, e As System.Windows.Forms.MouseEventArgs) Handles pbDraw.MouseMove
If draw = True Then
PaintBrush(e.X, e.Y)
End If
End Sub
Private Sub pbtest_MouseUp(sender As Object, e As System.Windows.Forms.MouseEventArgs) Handles pbDraw.MouseUp
draw = False
End Sub
Please help me
I have start a new project and i search for some solution to paint on a picturebox
with this code i am able to draw on a form but the i need to draw on a picture box, i have try multiple ways but i can not find the way to do it on the screenshoot in the picturebox
What i need to change to get it work?
This is my code
Public Class Form3
Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Cursor = Cursors.Hand
End Sub
Dim mustPaint As Boolean = False
Private Sub MouseEvent_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseDown
mustPaint = True
End Sub
Private Sub MouseEvent_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseMove
If mustPaint Then
Dim graphic As Graphics = CreateGraphics()
graphic.FillEllipse(New SolidBrush(Color.Red), e.X, e.Y, 10, 5)
End If
End Sub
Private Sub MouseEvent_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseUp
mustPaint = False
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
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.Format32bppRgb)
graph = Graphics.FromImage(screenshot)
graph.CopyFromScreen(0, 0, 0, 0, bounds.Size, CopyPixelOperation.SourceCopy)
screenshot.Save("c:\\dcap.jpg", Imaging.ImageFormat.Bmp)
PictureBox1.BackgroundImage = screenshot
End Sub
End Class
Do you have rights to write directly to c:\? What error message do you get?
Maybe try without saving the image file
'screenshot.Save("c:\\dcap.jpg", Imaging.ImageFormat.Bmp)
This absolutely puts a screenshot on the PictureBox. I don't know what else to tell you
PictureBox1.Image = screenshot
Here, I clicked the button 6 times and it kept working!
Well after to try so many times i got it work
This is the working code
Imports System.Drawing.Drawing2D
Public Class Form3
Private Sub Form3_Load(ByVal sender As System.Object, ByVal e As System.EventArgs)
End Sub
Dim mustPaint As Boolean = False
Private lastPT As Point
Private signature As New GraphicsPath
Private Sub PictureBox1_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseDown
If Not IsNothing(signature) Then
If e.Button = Windows.Forms.MouseButtons.Left Then
lastPT = New Point(e.X, e.Y)
End If
End If
End Sub
Private Sub PictureBox1_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseMove
If Not IsNothing(signature) Then
If e.Button = Windows.Forms.MouseButtons.Left Then
Dim curPt As New Point(e.X, e.Y)
signature.AddLine(lastPT, curPt)
lastPT = curPt
PictureBox1.Refresh()
End If
End If
End Sub
Private Sub PictureBox1_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox1.MouseUp
If Not IsNothing(signature) Then
If e.Button = Windows.Forms.MouseButtons.Left Then
signature.StartFigure()
End If
End If
End Sub
Private Sub PictureBox1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles PictureBox1.Paint
If Not IsNothing(signature) Then
e.Graphics.DrawPath(Pens.Black, signature)
End If
End Sub
Private Sub btnClear_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnClear.Click
signature.Reset()
PictureBox1.Refresh()
End Sub
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
Dim bmp As New Drawing.Bitmap(PictureBox1.Width, PictureBox1.Height)
PictureBox1.DrawToBitmap(bmp, PictureBox1.ClientRectangle)
bmp.Save(System.IO.Path.Combine(My.Computer.FileSystem.SpecialDirectories.MyDocuments, "test.bmp"), System.Drawing.Imaging.ImageFormat.Bmp)
End Sub
Private Sub MouseEvent_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseDown
mustPaint = True
End Sub
Private Sub MouseEvent_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseMove
If mustPaint Then
Dim graphic As Graphics = CreateGraphics()
graphic.FillEllipse(New SolidBrush(Color.Red), e.X, e.Y, 10, 5)
End If
End Sub
Private Sub MouseEvent_MouseUp(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles MyBase.MouseUp
mustPaint = False
End Sub
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
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.Format32bppRgb)
graph = Graphics.FromImage(screenshot)
graph.CopyFromScreen(0, 0, 0, 0, bounds.Size, CopyPixelOperation.SourceCopy)
screenshot.Save("c:\\dcap.jpg", Imaging.ImageFormat.Bmp)
'PictureBox1.BackgroundImage = screenshot
PictureBox1.Image = screenshot
End Sub
End Class
I'm facing two problems in my application:
The Undo Function
The Drawing Part
When i draw on the picturebox , it draws very well, when - let's say I want to undo an action, it undo's it but when I click back on the picturebox it reacts like a redo function ,all the drawings appear back on the image.
the second problem is : i want to be able to edit a picture so i load a image by clicking on a listview item but due to something i'm missing the image it is not show but instead it shows a white background in which i am able to draw.
bellow is the code i am using
Imports Microsoft.VisualBasic.PowerPacks
Public Class Form1
Public drawgraph, g As Graphics
Private redoBuffer As New Stack(Of Image)()
Private undoBuffer As New Stack(Of Image)()
Dim color As Color
Dim UndoStack As New Stack(Of Bitmap)()
Dim xStart, yStart, xEnd, yEnd As Integer
Public Drawbitmap As Bitmap
Dim Drawgraphics As Graphics
Dim myPen As New Pen(color.Black, 4)
Dim myColor As Color = color.Black
Dim myPenWidth As Integer
Dim myBGColor As Color = color.White
Dim Drawing As Boolean
Private Sub drawMyline()
PictureBox4.Image = Drawbitmap
Drawgraphics.SmoothingMode = Drawing2D.SmoothingMode.HighQuality
Drawgraphics.DrawLine(myPen, xStart, yStart, xEnd, yEnd)
End Sub
Private Sub PushUndo(ByVal b As Bitmap)
UndoStack.Push(b)
End Sub
Private Function PopUndo() As Bitmap
If UndoStack.Count = 0 Then
Return Nothing
Exit Function
End If
If UndoStack.Count > 0 Then
Return UndoStack.Pop
End If
End Function
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Drawbitmap = New Bitmap(PictureBox4.Width, PictureBox4.Height)
Drawgraphics = Graphics.FromImage(Drawbitmap)
PictureBox4.Image = Drawbitmap
Drawgraphics.Clear(color.White)
myPenWidth = NumericUpDown1.Value
xStart = -1
yStart = -1
Drawing = False
End Sub
Private Sub PictureBox7_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles PictureBox7.Click
Dim bmp As Bitmap
bmp = PopUndo()
If bmp IsNot Nothing Then
PictureBox4.Image = bmp
End If
End Sub
Private Sub PictureBox4_MouseDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox4.MouseDown
Drawing = True
PushUndo(PictureBox4.Image.Clone)
End Sub
Private Sub PictureBox4_MouseUp(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox4.MouseUp
Drawing = False
End Sub
Private Sub PictureBox4_MouseMove(ByVal sender As System.Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles PictureBox4.MouseMove
If Drawing Then
xStart = e.X
yStart = e.Y
drawMyline()
End If
xEnd = e.X
yEnd = e.Y
End Sub
End Class
I tried making changes but i can't load the image i want into the picturebox4 and draw on it , it always loads a white background as for the undo function it works until a click again on picturebox4 and all the undone drawings appear back. Can someone help me fix this 2 problems that I have?
I had created an application that captures the screenshot of desktop screen. It works very well with button I have used in form. But now I want to make that thing works automatically using timers but whenever I try to run program NullReferenceException occur can any one tell me whats going wrong here.
TimerCapture interval=5
TimerSave interval=6
Here is the code can tell you the scenario:
Public Class Form1
Private Sub timerCapture_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles timerCapture.Tick
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
End Sub
Private Sub timerSave_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles timerSave.Tick
Me.PictureBox1.Image.Save("d:\\capture.bmp")
End Sub
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
' Me.WindowState = FormWindowState.Minimized
'Me.ShowInTaskbar = False
End Sub
Private Sub timerClose_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles timerClose.Tick
Me.Close()
End Sub
Private Sub capture_btn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles capture_btn.Click
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
End Sub
Private Sub save_btn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles save_btn.Click
Me.PictureBox1.Image.Save("d:\\capture.bmp")
End Sub
End Class
Thanks in advance....
I think the problem is in timerSave_Tick, if, for some reason you haven't already valued Me.PictureBox1.Image in timerCapture_Tick, it would throw NullReferenceException while trying to access to PictureBox1.Image.
Try to modify it in such way:
Private Sub timerSave_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles timerSave.Tick
If(Me.PictureBox1.Image IsNot Nothing) Then
Me.PictureBox1.Image.Save("d:\\capture.bmp")
End If
End Sub
Anyway, you should be able to debug under Visual Studio, to see where the Exception is thrown..
I am using Visual Basic.Net and am drawing graphics on the screen.
Here is my code:
Private Sub Button1_Click(ByVal sender As System.Object,
ByVal e As System.EventArgs) Handles Button1.Click
Dim gr As Graphics = Graphics.FromHwnd(New IntPtr(0))
gr.DrawString("text on screen",
New Font(Me.Font.FontFamily, 25,
FontStyle.Regular), Brushes.Red, 50, 50)
End Sub
In the above code, text is drawn on the screen. My question is this: How can I remove the text that is drawn to screen? I see that there is a .Clear method, however, this 'Clears the entire drawing surface and fills it with the specified background color', rather than just removing the drawn text.
Thanks in advance.
EDIT
I am wanting to develop a subliminal message application that will show messages on screen while the user is using other applications. Would the transparent form be the best way to do this?
I have found the following code that works:
Private WithEvents TextForm As New Form
Private Zipper As New FontFamily("Zipper")
Private Sub Form1_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
With TextForm
.BackColor = Color.DimGray
.TransparencyKey = Color.DimGray
.FormBorderStyle = Windows.Forms.FormBorderStyle.None
.ShowInTaskbar = False
.WindowState = FormWindowState.Maximized
.Opacity = 0
.Show(Me)
End With
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Static showText As Boolean
showText = Not showText
If showText Then TextForm.Opacity = 0.99 Else TextForm.Opacity = 0
End Sub
Private Sub TextForm_Paint(sender As Object, e As System.Windows.Forms.PaintEventArgs) Handles TextForm.Paint
e.Graphics.DrawString("text on screen 12345", New Font(Zipper, 30, FontStyle.Bold), Brushes.Red, 50, 50)
End Sub
Take different bitmaps and draw each new thing in separate bitmaps and after merge new bitmap with old one. When you want to remove text reload old bitmap which is without text.
Search for drawing in new bitmaps and save drawing.
You can try this:
Dim Graphics0 as Graphics = Graphics.fromHwnd(0) 'This is the desktop's graphics
Graphics0.DrawText("Test 1..2..3..",New Font(Arial,10),Brushes.Black,New Point(0,0))