How To Draw A Zoom-ed Image With GDI
Sep 25, 2011I was wondering how I could draw an image using GDI, zoomed, like a PictureBox set on Zoom (SizeMode). How does that algorithm work?
View 10 RepliesI was wondering how I could draw an image using GDI, zoomed, like a PictureBox set on Zoom (SizeMode). How does that algorithm work?
View 10 RepliesI was wondering how I could draw an image using GDI, zoomed, like a PictureBox set on Zoom (SizeMode). How does that algorithm work?
View 5 RepliesIm looking for an image viewer that supports most types of image formats, including PDFs, and has the ability to rotate/zoom, and draw on an image. I've been looking but to no avail. Does anyone have any suggestions on the best way of going about modifying a control so that I would have these features? The main problem that I am running into is the lack of the ability to draw on an image. Im still sort of a newbie to .NET,
View 2 RepliesI have drawn a diagram of lines on a panel using the g.DrawLine command. I want to be able to zoom in to the diagram and define the zoom area by two cursor picks. I get the coordinates of the picks and draw a rectangle using g.DrawRectangle. This works fine but as I move the cursor around, the rectangle becomes solid black (with all the DrawRectangle commands). In VB6 I used a rectangular shape on top of my diagram but you cannot do this in VB2008. I need something like drawing in XOR mode. Somehow as I move the cursor I need to undraw the old rectangle and draw the new rectangle.
View 11 RepliesI am more interested in the "Pan" feature. I haven't seen much on this so far.
View 5 RepliesHow to zoom a particular area of Image in vb.net
Like e.g.,(50,50,100,100)
how to zoom this small region of an image I Already know how to zoom an image but not how to zoom a particular portion
I am stuck on crap picturebox image and it makes zoom on others picturebox.
View 1 RepliesI am trying to perform Zoom and Pan the image in Picture box using the following The Width and Height of the picturebox is (1024,1024).
Private Sub Picturebox1_Paint(ByVal sender As System.Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Picturebox1.Paint
If Mouse_Operation = "ZOOM" then
ZoomWidth = 1024 * Total_Zoom_value
ZoomHeight = 1024 * Total_Zoom_value
[code]....
Total_Zoom_Value and (imgx, imgy) are calculated based on the mouse movements on the picturebox.Now I am able to do the PAN operation after Zoom operation. But If i try to do Zoom operation after PAN operation, I am not able to Zoom the image from the PAN co-ordinates (imgx, imgy). I am not getting how to retain the image drawn using e.graphics.drawimage.how to do the operations on e.graphics.drawimage.
I'm considering a personal learning project. Using .NET(preferably VB) I want to build a simple desktop app that's only function is to display comics, like CDisplay, but with more advanced navigation. I want to be able zoom in by clicking on certain areas of an image, individual panels for instance, and have the zoom area automatically snap to the panel and blow it up. The images are usually in a standard format like .jpeg, .png, etc..
Something like this is what I'm going for: [URL]
I'm not even sure what this is called? Image mapping? Tone mapping maybe? Is it possible to do this within .NET or would it require some kind of outside library? Code samples would be nice, but obviously this is pretty vague request.
How can I zoom into monitor to see a pixelated image of the screens content?
View 2 Repliesdraw an image on form using an image in resources within VS2008VB instead of using C:userspublicimages
View 1 RepliesI add a Image Control and a RichTextBox control to a from. And I want to darw a image by my codes.And then insert the image into a RichTextBox.
View 2 Repliesi am trying to draw a iamge in an mspaint control, and then put that image into a richtextbox but it will ask for save file and file has been saved i want to show image in richtextbox as soon as click on save file in dialog window.
View 2 RepliesHow do I draw an image respectively on the PictureBox control and Image object? Welcome to the All-In-One Code Framework! If you have any feedback,
View 1 RepliesI want to draw an image onto another image object but use an alphamask specified from another image that is grayscale.
I am drawing an animation manually so don't want to do this pixel by pixel as this would be extremely inefficient.
How can I zoom in/zoom out screen display? This is to be used for people having eyesight problem. I want to control the screen resolution by percent and not to any fixed size provided in control panel/display settings.I have to control the output of the main display and zoom in/zoom out by percent, according to user's eyesight matching
View 3 RepliesIs there a way to zoom in and zoom out document in webbrowser?
View 1 RepliesI created a Zoom in and Zoom out function for my application and it works great. I would just like your opion on my code, because I am wondering if it can be done a bit neater and more effective.
ts = ToolStrip
cms = ContextMenuStrip
vb.net
If Me.Font.Size < 30 Then
[Code]...
Me.form.font changes the font of all the controls except toolstrips, contextmenu's and menustrips.
Any idea's if this can be done any neater or how you can make menustrip etc.. use the font of the form?
Edit:This is the Zoom In version btw. The Zoom out is identical except it uses - instead of + when declaring the newFontSize.
I'm having a image ".bmp" in my asp.net page. I should be able to draw over that image. How can i do this?(Similar to drawing in Paint)
View 3 RepliesI'm making a front end to dvdauthor.I have a picturebox which holds the menu background. In order to draw a textbutton on the background image I store the image in a hidden picturebox. So the text doesn't get drawn to the visible background.
Dim ctl As Control
For Each c As Control In pbMenu1.Controls
If c.GetType() Is GetType(TextBtn) Then[code]...
This works the first time. But if I hit save again it writes the text to the background image on pbMenu1.
I have a problem with my code
after I click undo I can't draw on the image and I don't know why
this is my code
Imports System.Drawing.Graphics
Imports System.Drawing.Bitmap
Imports System.Drawing
[Code]......
I'm trying to draw a 400x400 px image to a 400x400 form that I made. What I'm doing is:
Graphics.DrawImage Method (Image, 0, 0, 400, 400) 0, 0, 400, 400, ...
But when I run the form, the image seems to stretch slightly upon the y-axis, the x-axis seems to be working correctly.
This was what I was doing before (stretching the old smaller images to fit the size)
... (Image, 0, 0, 264, 231) 0, 0, 400, 400, ...
or something like that. Now that I'm trying to do it the correct way, I can't seem to get it to work properly.
Edit: I wonder if using a simpler verson of Graphics.DrawImage would work?
draw an image in my picturebox. Is it possible to give it an opacity attribute? I have been looking at the other versions of DrawImage but couldn't find such thing!
View 2 Repliestrying to Draw an image to a picturebox using DrawImage(image,0,0, picturebox.width, picturebox.height).I know I have to use the PAINT argument but still having a little problem getting it to work.how to start the code?
View 5 RepliesI have a very annoying problem, I am trying to draw an image with the Graphics class but when I do DrawImage, it automatically scales it up! heres some example code
graphics.DrawImage(My.Resources.TestImage, 20, 20)
PictureBox1.Image = My.Resources.TestImage
The picture box image is the correct size whereas the graphics drawn verison is too big!
Can i draw a image outside my form?
View 3 RepliesI'm using a class which lets me retrieve the a System.Drawing.Image by specifying a Sprite ID... I'm wondeirng, after I get the image, how do I draw it onto the form? Heres what I got so far
Dim img As Image = Util.SpriteReader.GetSpriteImage(3367)
Ok I made a gif image with a transparent background, but when I draw the image to another, the background is white.
I've looked on google, but all the comes up is how to make a gif file have a transparent background, not use an existing one.
[code]...
but, how to draw in picturebox? i use this code but not working!
[code]...
How can I clear the image in a picturebox to draw a new image.
View 3 Replies