When Create A New Bitmap The File Is Black?
Mar 12, 2009When I create a new bitmap the file is black. How do I make it white?
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Bitmap Background Becomes Black Upon Saving To JPG
Dec 7, 2010I have a little piece of code which saves a certain Bitmap to a JPG image. The Bitmap is "composed like this" ( Ppiechart is a picturebox):[code]So After it is declared I start to do some drawing on this bitmap. And then I want to save it like this:[code]So this saves the image. But the problem is that the background of the image turns black when I open the file on my PC.The background of the Bitmap in the program itself is white. So does anybody have an idea what may cause this? Do I have to declare a color for the "mybitmap"?
View 4 RepliesHow To Count Black Pixels In A Bitmap
Apr 19, 2009My goal is to iterate through each pixel determining whether it is black or white. Ideally I want to do this one row at a time (so I can count the number of black pixels in each row). This is a bitonal image.I tried to get it started, but I don't understand what value(s) I'm supposed to be polling for. The following code takes a stab at it (i.e. makes a guess as to what value I'm supposed to check) and then outputs that value to a textfile.When I read the textfile, though, it doesn't look like anything useful.This code is an attempted modification of some code found in a CodeProject article.[code]
View 5 RepliesCreate Monochrome Bitmap From Semi Transparent Bitmap?
Sep 17, 2011how can i create a monochrome bitmap from a semi transparent bitmap in vb.net? the bmp is for a transparency mask image for an icon i'm trying to create with the CreateIconIndirect API function.
i'm using vb2008 .Net3.5, but i would prefer an answer that would also work in vb2005
How To Create A Bitmap Image Using A Text File
Jan 9, 2010I am trying to convert from a text file to an image(bitmap) file.
For example, test.txt: 01 23 34 56 78 90
[Code]....
The first step will be reading the data, so I created some VB codes:
Dim openFileDialog1 As New OpenFileDialog()
openFileDialog1.Filter = "Text Files (*.txt)|*.txt"
openFileDialog1.Title = "Select a text File"
' Show the Dialog.
' If the user clicked OK in the dialog and ' an image file was selected, open it.
If openFileDialog1.ShowDialog() = DialogResult.OK Then
' Open file.
[Code]...
The second step will be converting the data to some data format which can be used in a bitmap image. This part is making me confused. Some codes I made is listed below:
[Code]....
Winforms - Create Image With Width And Height 64 And Set All Pixels To Black?
Jun 21, 2012i want to create image with width and height 64 and set all pixels to black
dim b as bitmap
b.width = 64
b.height = 64
[code]....
the code not working
Create A Bitmap From A Webbrowsercontrol?
Jun 28, 2010I'm using the following code to create a bitmap from a webbrowsercontrol that is located just off-screen (not visible to user, but control is "visible") Does the CopyFromScreen method work for something that is not ACTUALLY displayed on the screen?
I checked the values of p.X and p.Y at runtime and they are correct, but my "img" does not reflect the portion of the "Screen" i'm trying to capture.
Not sure what I'm doing wrong here, or if CopyFromScreen will still work if my control is outside of the bounds of the primaryscreen.
vb.net
'This is set at FormShown time
'Position the browser off-screen
Dim wbPoint As New Point(Me.Location.X + Me.Width - 50, Me.Location.Y)
[Code].....
Create A Bitmap From Path?
Jan 5, 2011Dim Image1 As New Bitmap(Application.StartupPath + "ResourcesPic1.png")
But I get an error.... It says invalid argument.
I want to create a bitmap from an image called Pic1.png found in the Resources folder of my application.
VS 2008 Create Bitmap To Certain PPI?
Oct 10, 2010I'm trying to create an image for printing and I know what the dimensions of the image (Bitmap object) is supposed to be in Inches but the Bitmap uses pixels so how would I define it's size to the number of pixels per inch?I do know what the printer's DPI is too, I'm able to get the horizontal DPI and the vertical DPI (which is 99.99% of the time always the same)
View 8 RepliesCreating .BMP File From Bitmap.Save(Path, ImageFormat.Bmp) Differs From Using Bitmap.Save(Path)?
Oct 1, 2011The code below reads an Icon from an .ico file, converts the Icon read to a Bitmap and saves the bitmap using:
Bitmap.Save(PathA)
Then does:
PanelShowWrittenIconA.BackgroundImage = New Bitmap(PathA)
[code].....
Create A 4000x4000 Size Bitmap?
Feb 7, 2010I've been reading a bunch of tutorials on Drawing in VB.Net, and still am reading them, but I have a question which I know I'll need to ask sooner or later:
How can I create a 4000x4000 size bitmap, and then draw a pixel at a certain coordinate on a bitmap? Like say I want to draw a BLUE pixel at coordinate X = 3000 Y = 3450. How could I do that?
Create An Icon (with Transparency) From A Bitmap?
Mar 2, 2010how can i create an icon (with transparency) from a bitmap?
i've tried this code, which i converted from a create cursor function which worked ok with transparency. i'm guessing its the IconInfo hbmMask + hbmColor properties?
#Region " CreateIconIndirect"
Private Structure IconInfo
Public fIcon As Boolean
[Code]....
VS 2008 Create Bitmap From Scratch?
Dec 25, 2009I want to know how I could create a bitmap from scratch with no images to start with.(I would say need. but than you would think this was for some sort of school project and it's not.)Basically, what I have is an image which is perfectly square in shape and has a black border with a black x going through it, what is not black is white. What I'm looking to know is how to take that small image (50x50 pixels) and make an image based upon those by placing them in X Rows of X amount. I'll make a couple example to show what I mean.(X's represent the 50x50 image.
[Code]...
Bitmap - How To Create High Quality Icons
May 13, 2012I need to create high quality icons for my current project in vb.net
This is my code so far,
Private Sub CreateIcon(ByVal bitmapName As String)
Try
Dim fi As New System.IO.FileInfo(bitmapName)
[Code].....
But the problem is it only gives me a very low quality icon at the end. how to make a higher quality image?
Create A CachedBitmap From System.Drawing.Bitmap?
Mar 29, 2010is it possible to create a CachedBitmap from a System.Drawing.Bitmap within Visual Basic 2005 by using APIs ?
View 1 RepliesCreate A Project That Stores Personal Information For A Little Electronic "black Book"?
Nov 15, 2011I am new here; say to everyone first.Here is the a question for coding list box; it has two part: first part: Create a project that stores personal information for a little electronic "black book"; the fields in the file should include name, phone number, pager number, cell phone number, voice mail number, and Email Address. allow the user to enter the data into text boxes. (This part is very easy, The trouble maker is in the second part).
second part: create a second project to load the names into a list box. perform a "Look Up" and display the appropriate information for the selected name. The second part should be very easy to someone here; please write codes, I have stuck in the second part for couple of hours.
System Memory In Bitmap - Using Bitmap To Show Picture Box Like Slideshow Using Timer
Jul 3, 2011I'm using Bitmap to show picture box like slideshow using Timer. For each timer interval, I've to go for new instance of Bitmap, there System memory increases to 1MB, How to resolve this, 'BG is picture box
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tic Dim img As Bitmap
img = New Bitmap(System.Drawing.Bitmap.FromFile(FileIO.FileSystem.GetFiles
[CODE]...
Use A ToolTip Directly To A Bitmap Object (System.Drawing.Bitmap)?
Dec 15, 2010I'm trying to use a ToolTip directly to a Bitmap Object (System.Drawing.Bitmap), aparently I can't do this because Bitmap isnt a Windows Control.
View 1 RepliesInterface And Graphics :: Create Bitmap With Text And Transformation Generic - Error Occured In Gdi+
Sep 17, 2008I am trying to create bitmap with my text and transformation. I am sure that there is no error in my code. Because this code is worked previously. Here is my code.
[Code]...
Get Resolution Of Bitmap From File
Aug 29, 2009I have a filename that leads to a picture. It is not an embedded resource. My bitmap object always tells me the resolution is 96x96 no matter what, how can I get the actual resolution.
View 5 RepliesExtraxct A Rectangle Bitmap From A Big Bitmap?
May 26, 2011Here is a short program to demonstrate my question. I just want to extraxct a rectangle bitmap from a big bitmap.Code as follows:
Private
Sub Button3_Click(ByVal sender
As System.Object,[code]....
Execution stops when hitting the Dim cloneBitmap statement, which should have created a bitmap out of the rectangle cut out.The message is:
"MissingMemeberException was unhandled.
No default member was found for type 'bitmap"
I just don't get it. Seems that the method Clone(Rectangle, PixelFormat was not found.
Parameter Is Not Valid - Bitmap Bmp = New Bitmap()
Feb 10, 2010I have a grass image located here in my directory. I want to just create a Bitmap, but I am getting an error. (Parameter is not valid.) Immediate Window: A first chance exception of type 'System.ArgumentException' occurred in System.Drawing.dll
[URL]
private void Form1_Load(object sender, EventArgs e)
{
Bitmap bmp = new Bitmap("grass.jpg");
}
bertino
Extract Bitmap From A Windows Resource File?
Jun 19, 2010I want to extract 2 bitmaps from a file in vista called "winload.exe.mui" hw can i extract it
View 1 RepliesPrint ENTIRE Datagridview To Bitmap File?
Jul 15, 2011Here is the thing, I have a rather bit datagridview on a form and, I would like to print that to a bitmap.
I've tried something like this:
VS2010
Public Sub SaveToImage()
Dim SFD As New SaveFileDialog
[Code]....
PS: I have modded a little bit this datagridview so it looks like a gantt chart with collapsible rows, and variable & multiple timelines at the same time, so the bars might go a long way to the right of the screen, that the main reason for the save to bitmap.
Read Tamil Text From Bitmap File?
Jul 11, 2010I have a bitmap file which has only tamil language text and English text.
View 1 RepliesSave Canvas As Either A Jpeg, Bitmap, Or Gif File
Jun 15, 2009I created a paint type program for signatures, and now I would like to save my canvas as either a jpeg, bitmap, or gif file, but I am unsure how to go about this. Here is my code,[CODE...]
View 4 RepliesVS 2008 Writing Text To Bitmap File?
Oct 30, 2009So what's happening is, I open the original image, get the graphics object, draw a string to it then save it as a new file.
vb
Dim path As String = ImageThumbs.Rows(0).Cells(ImageThumbs.Rows(0).Cells.IndexOf(ImageThumbs.SelectedCells(0))).T
[code].....
Mail.Attactments - Add A Bitmap Image File As An Attachment?
Jul 20, 2011I am using the SmtpClient object to send an email in code. I have the emailing facility working however I wantt to include attaching a bitmap image file to the email and dont know how to do that. Can someone provied me with some simple code to show me how?
View 2 RepliesLoad A GIF File, And Start With The First Pixel And Check To See If That Pixel Color Is Closer To Black, Red, Green Or Yellow?
Jan 30, 2009I would like to load a GIF file, and start with the first pixel and check to see if that pixel color is closer to Black, Red, Green or Yellow, then take what ever color it closest matched to and output that color as a number, 0, 1, 2 or 3. So just for a small example a 5x4 GIF would be converted to something like this: 0112223322220111332?
View 13 RepliesDelete A File That Was Previously Used With PictureBox.Image = New Bitmap(PathName)?
Jan 9, 2012delete a file that was previously used with PictureBox.Image = New Bitmap(PathName)?
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