I want to draw a text with 32 bit transparency on a graphics object. When I try, I only get black color in the result.
If I try to draw a line with the same semitransparent color, it works perfectly.
I have this code:
lBitmap As New Bitmap(32, 32, PixelFormat.Format32bppArgb)
lGraphic As Graphics = Graphics.FromImage(lBitmap)
lGraphic.SmoothingMode = SmoothingMode.HighQuality
[Code]...
I was thinking it may be that SolidBrush does not support transparency, but I found a predefined brush named Transparent (Brushes.Transparent) that was a SolidBrush when I looked at it in debug. I tried to use Brushes.Transparent as the brush when drawing the text, and it was successfully not showing at all. That means I get full transparency to work, but not partial transparency.
I am making a 2D sports game using XNA graphics. I would like to create a drop down menu from which the user can select various tactics. The menu will be a panel so that I can add in various sliders and check boxes, and it will drop down when the user clicks or hovers over a button.
[code] how to make the part that drops down semi-transparent or completely transparent resembling floating text. So that I can see the form underneath.
I'm trying to draw a semi-transparent layer over my entire form when certain events occur, with a prompt in front of this semi-transparent layer (similar to the effect in Windows Vista/7 with UAC enabled)At first I was trying to use a custom semi-transparent panel, but this didn't seem to work at all. As such I'm now trying to use a child form within the form using the opacity property on the form. However, when this semi-transparent form is added to the controls of the main form and displayed, it loses it's transparency.I've got a hacky work around at the moment where the semi-transparent layer isn't actually a component within the main form, and the transparency works then, but obviously this isn't ideal and could potentially cause various issues further down the line.
I know that you can pass a Point array to the DrawImage method of the Graphics object to apply rotation, skewing and flipping, but I'm having trouble figuring out how to calculate the rotation. So far I've got:
Dim radius As Integer = Math.Sqrt((rect.Width / 2) ^ 2 + (rect.Height / 2) ^ 2) Dim dX As Integer = RadToDeg(Math.Cos(DegToRad(angle))) * radius Dim dY As Integer = RadToDeg(Math.Tan(DegToRad(angle))) * dX Dim new_upper_left_corner As New Point(rect.X + (rect.Width 2) - dX, rect.Y + (rect.Height 2) - dY)
This is all just off the top of my head so far, I'm not sure if it's right. How do I calculate the other points on the rectangle, and is there a built-in VB.NET method that's much easier? (Apart from Graphics.RotateTransform, which is slow and also rotates around 0,0.)
I am trying to create two semi transparent panel.When I click on panel 1, the color is semi-transparent red. Panel 2 will become semi-transparent green. When I click on panel 2, the color is semi-transparent red. Panel 1 will become semi-transparent green.
Using class below:
Public Class TransparentPanel Inherits Panel Private mIsActive As Boolean = False Public WriteOnly Property IsActive() As Boolean
[code].....
When I click on panel 1, it is semi-red, when I click on panel 2, panel 1 become semi-green. When I click back on panel 1, it seems to draw the semi-red on top and make it not semi-red but more red. The more click I do, the transparent is gone. Is there a way to drop the graphics and repaint it with semi-red? OR, is there a way to restore the graphics to its original state in semi-red? OR, is there a way to clear the graphics and repaint it with semi-red?
I am working currently on a watermark maker and I would like to know how to make a label see through. For example a form can have opacity out of a houndred, so I'm asking how can I do something simular to this in visual basic.
I need to convert the color as semi-transparent for the picturebox to see something behind the picturebox.... Here, I have a difficult situation. When I set the image color using with the code, none of them are works. So I got them rid it. ARG!!!! I need to find the fact semi-transparent for the picturebox.
I'm trying to make a card game. So when the user tries to drag the card, a semi transparent card will follow the mouse movement until he let go of the mouse.
Is there any way to embed a vb.net form to another vb.net form. What I am trying to do is to make Form-A semi-transparent and Form-B as the embedded main form. So that the final application has a semi transparent border around it . Also I don't want to use a MDI form.
Edit: How to make the border of a vb.net form semi-transparent without using MDI form.
I have a 75% transparent form and I would like the controls and elements that I place on it to be 100% opaque. I've searched but didn't turn up any results.
I have a semi-transparent custom control in vb2005 - works fine, except I can't get it to update/refresh correctly. If I update the custom parameter _backgroundColor, the control appears to be overpainted - e.g. each attempt to update the colour of the control overpaints the existing colour - until it becomes a solid block of colour. However, forcing a refresh of the form makes the control display the correct colour. Any ideas? I don't want to have to repaint the form just to get this control to render correctly. Code for the custom control is below.
How can I make semi-transparent form, with fully visible buttons on it? I'm trying with opacity, but I can't force it to work only with form.(And I need semi-transparent form, so I can't use TransparencyKey)
I have an application that makes a drawing with measurements both horisontal and vertical. I like to get the vertical measurements to be in direction down-up, not up-down direction as StringFormatFlags.DirectionVertical does. All the measuretexts are drawn to a graphics path. Because that path includes all measures at different locations I can´t TransformRotate that path, the text should be rotated before it is passed to the graphics path, or ? It would be so nice if it would be a StringFormatFlags.DirectionVerticalUp to handle it.
I'm a second year A-level student (12th Grade U.S. equivalent) studying Computing, Physics and Maths. I like anime, PC gaming, climbing and mountaineering. That's an insight to who I am. Thought I'd add it here to my first post since I couldn't spot and introductions section.
how 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
So I decided to make my famous tile selector project, but instead of drawing in a form's graphics, do it inside a tabpage.Well, I managed to get it working, but it seems to... flicker.Normally, setting the form's DoubleBuffered property to True would help a lot there, but apparently, the tabpage has no such property.
When I invalidate the tabpage, I draw two images and fill one rectangle.Following past advice, those two images were created before, just once, and are stored in a variable so I don't create them every time I invalidate the tabpage.
I need to draw a transparent plane over a User control in my DotNET 2.0 app. That much is easy at least. The hard bit is that I need some (potentially overlapping) holes in this plane. Shape and size of the holes is not known at compile-time.
I tried to approach this with Region and excluding a bunch of GraphicPaths from it. This works great except that the edges of the holes are not anti-aliased.
I am making an application in VB.NET that allows a user to highlight some text in images of documents so that the highlights could be saved for future reference, but the original images would not be modified. I figured I can achieve it by creating a graphics out of an image file and allowing the user to draw on that graphics. The problem is - the graphics can not be created from indexed image files, which many of mine are. I am wondering: is it possible to create a transparent graphics surface above an image in a PictureBox control, so that the user could draw on that surface, but it would appear as if he is drawing directly on an image?
on the form i have a groupbox with a few textboxes and labels inside of it. Behind the group box i have a picturebox image. I want this image to be seen around the textboxs etc.. through the groupbox
Ive tried changing the background colour in the properties to transparent but you can still see the background colour and so the groupbox covers up the picture.
I want the background of the groupbox to be completely transparent.
i am making a program with graphics and im using a picturebox for a button. The image inside picturebox is transparent .gif. The problem is that i don't know how to make picturebox transparent. I searched the internet but all exaples didn't work. Does someone know how to fix this problem?
I made a game in VB 08 and I have sprites and a background but I need to know how to make the background of the sprites transparent.I'd like to note that I'm using a picture box for my sprite, and the game is animated (I read that those things are relevant).I've read a lot on bitblting but I don't understand it, and when I found a helpful article it mentioned to use the .hdc. This article though was made before the introduction of GDI+ which now makes it harder to obtain said .hdc.
Running VB/Studio? 2010 on XP. I draw on full screen resolution of 1920 wide x 1080 hi.I have set FormBorderStyle to NONE & WindowState to Maximize which seems to be the only way to get rid of the task bar.but w or wout this setting, My graphics draws a full screen twice - mostly repeatably.When I have [code] parameters set to use 9/16th of screen horizontally, the pattern is drawn once the first time I run it and usually once if I hit F5 quickly enough after hitting Alt-F4. But if I wait long enough [a second or 2] after 'Ready' appears at teh lower left of the IDE screen, then it draws the pattern 3 times.for wider patterns, 10/16th, 11/16 up to 16/16, which is 1920 pixels wide, it usually draws the pattern once after I make this parameter change and twice from there on. The 'twice' is repeatable; it 'doing it once' the first time is not a sure thing.
There are more peculiaraities than this, but if we can find causes for what I"ve given you, it might get them all wout making it seem more complicated than it is.I don't think it's in my code; it works - it draws the right thing the right number of times w no compiler errors. But here is the guts of it:
Public Class Form1 Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles MyBase.Paint e.Graphics.SmoothingMode = Drawing2D.SmoothingMode.HighQuality
i'm working on Virtual K770i project - there is a picture of mobile, now i want to create clickable areas on "keypad" of mobile....I'm got idea about transparent label or something but transparency dont work on any object but Form1 - so how to make transparent clickable areas on picture box (see a picture)
