Overlay Text, Bitmap With Diff Effects (alpha) Using DX?

Feb 6, 2011

I need to overlay the text, a movie or bitmap over a video.It would be possible to use VMR9 filters, but at playing of a wide video, for limits of a black square, it is impossible to overlay in out of video square range.


Bitmap / Image Manipulation Effects / Methods?

Apr 18, 2012

Back when I used to use an 8 bit home computer I dabbled in machine code with an old version of BASIC which allowed you to POKE values into memory and then call the 1st memory location to execute that code. I used the equivalent HEX values for the processor which ran a series of ROR ( ROtate Right ) or ROL ( ROtate Left )commands through the carry bit as each line of the bitmap consisted of a series of bytes which were an 8 bit BYTE followed by the next BYTE in memory. The effects that I manage to create "in assembly language" as it were:

Scroll leftScroll right By manipulating full bytes in memory I created routines to:Flip the image horizontallyFlip the image verticallyTurn the image upside down Anyway, if you were to try this with the BASIC equivalent to GET and SET pixels, obviously the BASIC was a LOT slower. I am also interested in creating animated bitmaps from one or two images such as the following:Page turn effect.Sliding-in of an image in any direction.Ripple effect.Scratch effect.

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Way To Manipulate Alpha Values In A Bitmap?

Aug 14, 2011

This is a follow on from a recent thread

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Bitmap Effects (Firmware 2.0) Change The Source Of An Image In WPF

Sep 2, 2009

I think that changing from WinForms to WPF just because the blur effect is easier to do in WPF is the stupiest thing i can do right now it took me time to understand how the windows form application works i dont even how change the source of an image in WPF so here we are again. how to blur a speciefied image using CODE ONLY ?

See what im trying to do:

1. Imagine that you turn on your pc. takes some time to load.
2. Finally for the first time you are on the desktop.
3. Before you do something after every icon is loaded my program
takes a picture of the desktop and blurs it.
4. then it runs fullscreen showing the desktop behind as blurred and
not giving you access to the desktop.
5. a login/register border pops up
6. if you login the program closes if you dont it stays there
waiting for you to login or register.

I wont use it that way im planning to do it on the startup of my program only blur the window not the screen (i mean the content of my window) untill you login or register then it clears again. What i need to learn:

1. How to take a screenshot of my program (only yhe content of the window) [Progress: 1% (cause i know how to take a screenshot of the desktop)]

2. How to blur that image [Progress: 100%]

No need for third party programs or dlls i mean isnt there a default function in vb.net the stupiest way to do it?

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Most Efficient Method To See If Alpha Channel Is Used In A 32 Bit Bitmap?

Mar 18, 2011

url...But what I'm looking for is just see if any alpha (0-254) is used in at least one of the pixels. Would the Bitmap.Lockbits and BitmapData method be the most efficient (speedy?) or is there another way. I've tried toying around with ColorPalette and the Alpha flag, but never could figure it out (and even if it is a way to check to see if the alpha channel is used at all).

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Encrypt Text To A Textfile(.txt) And Then Decrypt It In A Diff. Program?

Feb 21, 2009

I am trying to encrypt text to a textfile(.txt) and then decrypt it in a diff. program.The encrypting part works fine.I have tried these functions in a textbox and they work perfectly, I get InvalidCastException when trying to decrypt from the .txt file.


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C# - Overlay Text On Some Else's Window - HUD?

Jun 19, 2009

I have a form with some text boxes bound to a dataset using the binding source component I'd like to change one of the unbound fields in the current record programmatically before posting any changes from the bound controls

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Overlay Text On A Textbox?

Dec 14, 2009

I need to overlay the word 'VOID' over a textbox but in a semi transparent way so the text in the textbox underneath 'VOID' can still be seen.

I have tried using various controls with no luck and there is no paint event for the textbox.

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.net - Know If PNG Has An Alpha (or If The Alpha Is Completely White)?

Jan 13, 2010

I have PNG and need to know if it has an alpha (or if the alpha is completely white)? How can I accomplish this in vb.net code.

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Draw Text On Alpha Blended Form?

Mar 2, 2011

how to draw text on alpha blended form?

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Converting Text Containing Alpha-numeric & Special Characters To String Of Only Capital Letters And Numbers

Nov 19, 2011

I have encrypted a string to something like this: 

1.   Asak2$)kla1015QAXKFskfa332aSJ2(Ska@Skljcmcel3p.lq,aowpqaskla2@)Skx.:Pdm^),dfs;

what i want to is convert this string to something like this


both 1 & 2  the above strings are fictitious (i made them up to make my point clear)

I am trying to make a licensing system for my VB 2010 express application. (2) above will act as a serial key which can be derived from (1) which is an encrypted form of something unique of the client computer.

I will then confirm the (2) from the client.

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System Memory In Bitmap - Using Bitmap To Show Picture Box Like Slideshow Using Timer

Jul 3, 2011

I'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


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Same Code Diff Error

May 22, 2012

My goal was to make something that would constantly update the amount of gold that someone had. If they had X number of gold, it would display a certain image for a picturebox. You get the deal.I get "Error1'Money_Checker_Loop.My.Resources' is a namespace and cannot be used as an expression. C:**AppDataLocalTemporary ProjectsMoney Checker LoopForm1.vb3347Money Checker Loop.[code]

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Use A ToolTip Directly To A Bitmap Object (System.Drawing.Bitmap)?

Dec 15, 2010

I'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.

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Add Text BELOW Bitmap In Program?

Mar 29, 2011

I'm trying to resize a .NET bitmap without actually scaling the image. The idea here is to create a space above and below the image, fill it with a black rectangle, and place some text there (without covering up or destroying any part of the original image).

All the code and examples I've seen of this thus far just show how to scale the image, not expand the canvas. So far, everything I've tried on my own also scales/stretches the image.[code]....

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Draw Text Onto A Bitmap?

Sep 20, 2009

Can I Draw text onto a bitmap? or can I convert a string to a bitmap?

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VS 2005 Add Text To Bitmap?

Jun 17, 2009

I want to add some text to a photo (held in a bitmap) but rather than write over the photo itself I want to add a small black bar to the bottom of the image and write some white text in it.

e.g. a 640 x 480 photo becomes 640 x 510 with the black bar at the bottom.

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Compare Two Tables And Note Diff?

Jan 19, 2009

I have three Tables in the MS Access database as below:



and i have a compare button on the VB form. Is there any code that can compare the Company_Data with User_Data and copy all the records not found in User_Data to Changes_Data table. When updating it should update the "updated on" Column to the current Date.

Same needs to be done in the opposite way. Compare User_Data with Company_Data and note the diff. No Need to update Salary in this case.

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Feb 23, 2010

I need to create two diff app

1.Windows application


in a same project.I need to call forms and pages of both app and integrate them ex How to call WPF page from a win application)

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Exe Security/diff Result On Multiple OS?

Jun 1, 2009

I have created a small app that gives, User Name, Pc Name, Domain & Local IP Address. I run the exe from my pc (development pc), it works fine. I put the exe on network shared folder and run it from my pc, It works fine. I put the exe on network shared folder and run it from another pc (logged in as admin) it gives "Application attempt to perform an operation not allowed by the security policy. To Grant this application the required permission, contact your system administrator, or use the Microsoft .Net framework Configuration Tool."

so, I contacted my self (since I am the System admin) :) and myself did not know the answer even after I read this [URL]... which says On the Web server, open Administrative Tools, and then double-click Microsoft .NET Framework Configuration. and the the other pc is XP not Windows server.Now If i copy the exe to this pc on a local drive, it will work fine and give right result. Another weird thing is when I run this exe from Windows 2003 server, and it gives a security warning, after i press ok, all the result was fine except the ip address with was "::1"


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How To Pass Variable From Diff Form

Aug 6, 2009

Below is the code that i use to call up a new form. I wish to pass the variable 'connstr' into frmRace.

Public Function ShowRaceForm(ByVal userName As String, ByVal connStr As String) As Form

Dim frmRace As New RaceForm
Return frmRace
End Function

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Sep 17, 2011

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

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VS 2010 - From Text To Image (Bitmap)

Apr 4, 2010

Imports System.Drawing
Imports System.Drawing.Imaging
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
[Code] ......
I am using this, however I get a GDI+ Unhandled Error.

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Accommodate 2 Diff Assembly Versions Of A Reference DLL?

Aug 13, 2009

I have a pretty complicated project with lots of class files, code modules, etc. There was a changed to one of my referenced DLLs that requires an isolated change in a single Sub within my solution. Unfortunately, this new Sub is not compatible with most of my clients' configuration but is required by some of my other clients. So now I must keep two versions in Source Safe of my solution - which I do not want to do. What I would like to do is to be able to determine which DLL is running and flip a switch to use the either the old Sub or the new Sub. Currently the sub is in a class, but I could break it out. Is it possible to determine which assembly version DLL is running? Also, if I reference the new DLL, the old Sub will not build. If I reference the old DLL, the new Sub will not build. So is there a way to keep both Subs in the same project? 

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How To Create A Bitmap Image Using A Text File

Jan 9, 2010

I am trying to convert from a text file to an image(bitmap) file.
For example, test.txt: 01 23 34 56 78 90


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.

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:


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Read Tamil Text From Bitmap File?

Jul 11, 2010

I have a bitmap file which has only tamil language text and English text.

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VS 2008 Writing Text To Bitmap File?

Oct 30, 2009

So 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.

Dim path As String = ImageThumbs.Rows(0).Cells(ImageThumbs.Rows(0).Cells.IndexOf(ImageThumbs.SelectedCells(0))).T


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HyperLink In Gridview - Link In The 2nd Column Which Redirect To Diff Page?

Apr 2, 2009

i have 5 columns & it bind to gridview.nw i want to link in the 2nd column which redirect to diff page.

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Extraxct A Rectangle Bitmap From A Big Bitmap?

May 26, 2011

Here is a short program to demonstrate my question. I just want to extraxct a rectangle bitmap from a big bitmap.Code as follows:

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.

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Parameter Is Not Valid - Bitmap Bmp = New Bitmap()

Feb 10, 2010

I 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


private void Form1_Load(object sender, EventArgs e)
Bitmap bmp = new Bitmap("grass.jpg");

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Interface And Graphics :: Create Bitmap With Text And Transformation Generic - Error Occured In Gdi+

Sep 17, 2008

I 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.


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Picture Box Overlay?

Apr 2, 2010

I have a picturebox in a Windows VB.NET form (not web based).  I will be placing images into it from an image control. (Not a problem)  I need to paint graphically a tiny solid circle (a colored circle)  in a location (varies) on top of this picturebox.  I am not finding how to do this in your indexes.   I would some instruction on how to do this.

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.net - ITextSharp Overlay Image?

Mar 15, 2011

I have an instance where I have a logo image as part of some artwork..If a user uploads a new logo I have a form field which is larger than the default logo.I then use that form field to position the new image.

The problem is I need to set the background colour of that form field to white so that it covers the old logo in the event that the new image is smaller than the old logo..

what I have done is:foreach (var imageField in imageReplacements)
fields.SetFieldProperty(imageField.Key, "bgcolor", iTextSharp.text.Color.WHITE, null);
PdfContentByte overContent = stamper.GetOverContent(imageField.Value.PageNumber);
float[] logoArea = fields.GetFieldPositions(imageField.Key);


The problem with this is that the background colour of the field is set to white and the image then doesn't appear.. i remove the SetFieldProperty and RegenerateField commands and the image replacement works fine.is there a way to set a stacking order on layers?

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How Simulate Imagelist.Overlay()?

Dec 4, 2009

Is a way to get the same in VB.net?I've tryed with DrawImage but it doesn't work.

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Overlay Line On PictureBox?

Jan 12, 2010

I have connected a serial tilt sensor to the PC,The sensor returns angle of tilt ,i need to represent the angle of tilt pictorially,When i move sensor the corresponding movement should be represented in a graph (Like a clock minute hand)For this i started with Picture box with back ground image,But when i draw the line according to tilt ,the line is not getting displayed on top of Picturebox,

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Dynamically Create An Overlay Over PictureBox?

Mar 17, 2011

I have a VB.Net PictureBox floorPlanImage on a form form1.

I load a picture into the picturebox[code]....

How can I modify my onclick function to correctly overlay the rectangle over my PictureBox?

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PictureBox With Transparent Overlay Picture?

Jan 14, 2010

I'm working on a UserControl which has two PictureBoxes.One has the picture I want to display to the user and the other has a picture that I use as an overlay.The overlay PictureBox uses a PNG image with a transparent background. However, every time I run the UserControl, the overlay does not display the transparent parts of the PNG image as transparent (It appears white).

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VS 2010 Transparent Black Overlay?

Feb 3, 2012

When the dialog pops up, the screen dims down almost as if they overlapped the screen with a transparent black layer of some sort. This is easily accomplish able by creating a black form and having its opacity set to half and starting it maximized-which I'm already doing. The problem with this though is I need to do this within a form, so using a panel or anything is out of the questions since transparency really grabs the background image and not the actual controls underneath. Plus I feel if adding a form to another forms controls depletes it's ability to use it's opacity property.The form I need this in is my cash register. It is full screen but if my menu auto hides it still resizes. It has two parts, the order(panel to the left) and the payments(panel to the right). As you could imagine I want the payments portion blacked out until the order is capable of accepting payments(the payment due is greater than 0). Or I'm thinking it fallows the mouse, you mouse over the payments and the orders panel blacks out, and vice verse.

Plus I have tried googling this but no one seems to have the answer on other forums.. Everyone gets confused and the thread ends short with no solution. Apparently though experts-exchange has the answer, but wants me to pay... so no. Wish their site would stop showing up in my google results.But did have an idea of what I could do. My best guess was I could take a snap shot of just the panel I want to black out. Set it as the background image for that panel THEN use my overlay panel(back color sent to black) overlapping the appropriate section with it's transparency set to half.. But still I'm not sure how to take a snap shot of just a particular.control..

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.net - Opaque Form Overlay Without Covering Task Bar?

Aug 10, 2010

Using Visual Studio 2008 and VB.NET ...

I've created a form (OpaqueForm), which is an intermediary form between other forms which I will open with ShowDialog. The idea is that when I want to show a form using .ShowDialog, this OpaqueForm, with an opacity other than 100%, sits in between the main form and the dialog form, effectively "greying out" the underlying main form.

The OpaqueForm has the FormBorderStyle property set to None, and accepts in the constructor a Form object on which it invokes .ShowDialog. The effect works fine, but there is one caveat. The task bar is also covered by the OpaqueForm; I am assuming because it has a FormBorderStyle of None and a WindowState of Maximized.

I don't want the OpaqueForm to cover the Task Bar, because it would be impolite to have my modal form lock out a user from switching between tasks. How could I go about preventing OpaqueForm from covering the Task Bar, too, while still using a FormBorderStyle of None?

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Overlay DirectX Full Screen Games .Net

Feb 21, 2010

I have a wonderful program which needs to be overlay-ed over my full screen directX game, the only problem is I can't seem to find any way of doing this with .net coding

things that don't work are, these are not overlays and will not work over a full screen directX game. I posted this so hopefully no one gives me that answer by mistake.


timer1.interval = 1
if timer1.enabled = true then
me.topmost = true
end if

the only thing I can seem to find is this example and source C# overlay maker however it's pretty old and it's for C# but maybe someone could convert it somehow to .net or something, I really need to find a way to do the overlaying tho been trying for months now...

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