Change LParam In A Windows Message?
Apr 12, 2010
People have posted code to drag a borderless form using a Windows Message, both on this forum and in the CodeBank. This method has a drawback: you can't drag the form higher than the top of the screen -- or rather you can, but it immediately flips back again when you release the mouse button. I would like to change that behaviour.
After some time poring over the stream of windows messages, I found that the flip-back occurs whenever there is a WM_CAPTURECHANGED message immediately followed by a WM_WINDOWPOSCHANGING. The latter message contains a pointer to a WINDOWPOS Structure in its LParam field. Apparently it is possible to annul the impending change of position by setting the NOMOVE flag of that WINDOWPOS. [code]...
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Jun 2, 2010
Is it possible to change the background color of Message box in windows application.
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Sep 26, 2011
I went to watch a real-time nature of the window WM_PSD_ENVSTAMPRECT lParam of this performance function over time.
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Dec 26, 2010
I'm trying to teach myself to use SendMessage to manipulate other windows and have been reading as much as possible on the net to understand how to do this. I've come upon a problem though that I have been unable to find an answer for on the net. Currently I'm attempting to read text from another window. I am under the impression that I use FindWindowEx to dig into a target window's handle and find the controls in the form, although I still haven't been able to do it successfully. I read somewhere that I use Spy++ to find the names of the classes I am searching for with FindWindowEx, and that once I have the handle of the specific control containing the text I use SendMessage to send it a WM_GETTEXT message. The problem I'm having is that for the lParam MSDN says that SendMessage needs a "Buffer", and I'm not sure how to use one of those. I tried using the type Buffer, but that didn't seem to work. Is buffer a euphamism for a certain variable type? I tried using IntPtr as well but the returned IntPtr was always IntPtr.Zero...
So basically my questions are:
1. How exactly can I use FindWindowEx to locate a control's handle? I'm having trouble getting it to work, but I'm probably just not understanding how it functions.
2. What is the variable type for the "buffer" required in lParam of the WM_GETTEXT SendMessage?
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Apr 8, 2010
I renamed my project by creating an new project folder, copy/pasting the old project files into it and renaming those files. This works good, but now all of the message boxes that come up still display the original project name. How can I edit the text in the message box "header" and make it say something else?
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Mar 22, 2011
I may have missed the solution to this problem, but in my database I have 2 columns that cannot be null and a system.NoNullAllowedException message is displayed if they are mt. I want to change this message to simply indicate that the cell cannot be null, instead of the huge message with all of the information which is of no use to the user. I cannot seem to find where to change this message. When the exception is thrown I would like to see the message say something like "Empty cell not allowed".
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Jun 3, 2012
1, Is it possible to change the size of the message box because currently the header text of my message box is off the screen.
MessageBox.Show( _
"Click OK to continue", "The following job has been cancelled", MessageBoxButtons.OK, _
MessageBoxIcon.Exclamation)
So in this case it only shows "The following job has bee" so is it possible to resize my message box so it shows the full length of the header text?
2, I have been using try catch structures in my coding, but in my message box I can't get to add the header text?
Catch ex1 As Exception
MessageBox.Show( _
"Error..." vbCrLf & ex1.ToString)
[Code]...
However the above just displays Error twice within the message box and no header. Also if possible how would I add a messagebox icon with the try catch structure?
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Apr 10, 2012
How can I change the background of my form to look like that of Windows Mobility Center in Windows Vista?
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Nov 16, 2009
Im doin project in vb.net as front - end and sqlserver 2005 as back-end
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Jun 4, 2011
if I forget to enter a value in a cell in my gridview a loooong error who says thar that the indata format is wrong. anyone who know where in visual studio I can make this error a bit more understandable for others?
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Jan 29, 2010
I have in my code the CBN_DROPDOWN command that is sent using a Windows Message, but I want to be able to make the Combo Box List Drop Up as well. Does anyone know if this is possible or how I can do it?
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Jul 7, 2009
For now i have not finished my code and as i am still really playing with .net to learn the different functions how can i close the windows application down after the ok only message box has been clicked? here is the code so far:
[Code]...
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Nov 2, 2009
I need to assign code to a button, that when clicked on, validates an ISBN code, and displays a message that it is either Valid or Invalid. I basically need help transforming code used in a console application that will now be used in a windows form application, so no more writeline stuff, now message boxes. [code]
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Oct 23, 2009
Does anyone know the font + size for a standard message box in Windows Vista?
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Apr 14, 2009
I have a project that up until recently has been working fine. It sends an email message to a user once a file has been successfully uploaded, registered and/or approved to use the website. It is written in VB.NET framework 1.1, running ASP.NET on a Windows 2003 server SE sp2.
First the code
Public Sub EmailAfterRegister(ByVal sEmail As String, ByVal sUser As String)
Try
[code]....
This has worked for over one or two years. Today I realized upon testing I get the following error:The procedure entry point IstrcmpiI could not be located in the dynamic link library MSDART.DLL.Upon some research I found that maybe I needed to install MDAC 2.8, which i downloaded and installed today, however i still get the same error. I have had my communications and network admins check traffic and connectivity to the smtp server and all is working fine. Yet I still get the error.
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Aug 13, 2009
I'm trying to program in a true object oriented manner and its causing me to re-learn a few things. Specifically, I'm having some trouble with error handling. I have all of my data access being performed by an adapter class in a seperate project. I can catch duplicate records without any problems, but I want to be able to send a message back to the user. Here's what I have so far:
[Code]...
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Sep 16, 2009
I'm developing a program where I've had to add a keyboard shortcuts system. The problem is it uses a third party OCX for a part of its display, and it is catching some essential WM_KEYDOWN messages when in focus, like Ctrl+C, Ctrl+V, etc. I've tried catching the WM_KEYDOWN message through WndProc, but the message is not propagating, so I guess the keyboard messages go from the inner container to the outer one, don't they?
The WM_KEYUP messages can be caught tho, but I'd prefer to be able to catch some of those messages on the KeyDown event. I'm aware I could make some low-level hook, but I'd like to avoid this workaround. Well, if the WM_KEYDOWN message goes from the OCX to its top level container, I guess I'll have to treat those key combinations in the KeyUp event.
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Sep 11, 2010
I was just wondering if there was a way with, using VB.net, be able to create a program to detect when a message is received in Windows Live Messenger, and alert the user?Essentially, MSN is minimized in background and our program, Program A, is also running in backgroung.Friend X sends us a message, the MSN icon blinks as usualy, but also a window pops up and shows the name of the user and the message.I was just wondering if there was a way to connect to MSN in some fom to be able to do this?
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Jun 4, 2009
I am working on a windows application in vb.net 2005 and it needs to connect to the SQL Server database. In this example I testing if the connection is able to open properly:
[Code]...
Is it something dealing with the permissions set with the database server or something? I am new at .NET programming and I have been spinning my wheels on this for the past couple of days and I am at a loss. From what I research, this error should only occur if I was creating a web program, but I am not. It is a windows application.
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Oct 2, 2011
I'd like to write a simple Windows form that will make it easy to record a voice message before uploading it to a remote web server and sending the URL to the recipient(s):
[URL]
Currently, the user has to use Sound Record to record the message, use an FTP client to upload it to a web server, and finally, use an e-mail client to send the URL. I'd like to combine those three features into one.
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Jan 4, 2010
I'm currently working on updating an ms access database by using this code:the error is: System.Windows.Forms.MouseEventArgs
I don't know what is it, can you help me solve my problem, adding, deleting, listing, searching for records is already working. If I can finish this update then I can proceed with the system that we are doing for a company for our school project
[Code]...
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Aug 11, 2011
I have a text box and want to know if the data enter into is via pressing numeric keys or via a CTRL+V or via mouse right click.
Do not want to use windows message to process for paste/right click paste event.
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Jan 19, 2009
I am currently working on a project that, among other things, should allow the user of the form to click a button and be taken to the change password window for that particular user. The is Start>Control Panel>Users> select a user> Change password. I am trying to save the user alot of time by just taking them to the approite window. It would be nice if the password was automatically changed.I know that the System. should contain the right code touse but I am having trouble finding the right path. I did find a code to shut down [code]System.Diagnostics.Process.Start("shutdown", "-l -t 00")[\code]
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Apr 11, 2009
How can I change this example from web application to windows applecation!
the web application example is attached bellow
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Jun 4, 2011
Is there a way to see if the user is using Windows 7.If yes, can we change their theme when the Form loads, and change it back when it closes?
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Jan 6, 2010
create a message box that stores my user name, message, and post datetime into the database as messages are sent. Soon came to realise, what if the user changed his name? So I decided to use the user id (icn) to identify the message poster instead. However, my chunk of codes keep giving me the same error. Says that there are no rows in the dataset.
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim name As String
Dim icn As String
Dim message As String
[code]....
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Feb 22, 2009
how to create an error message by message box to tell the user to enter a number only if they key in a character value?
I MEAN AFTER THEY PRESS THE CALCULATE BUTTON
Private Sub btnCalcFat_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCalcFat.Click
Dim intFat As Integer
intFat = Integer.Parse(txtFat.Text)
lblResultDisplay.Text = txtFat.Text * 9
End Sub
My text box is call txtFat
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Sep 16, 2011
I have an application (chat) that I am developing for our company (special requirements). We are mostly using WinXP computers. I want it to be topmost and docked to the right, the problem is, I don't want it to overlap other windows that people are working on.
Is there a way to change the default area that other programs can maximize to? Basically, I want it to look something like this: Is something like this possible? I'm using VB.net so all .net answers are accepted.
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Aug 28, 2009
I really want to do is change the default printer in Windows.No combobox populated with a list, just simply the syntax for changing the default printer.
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Apr 14, 2012
I want to change the windows user password in a VB.net Module...
Just change it, how can i do that?
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