I have two applications Application 1:source
Public
Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Button1.Enabled =
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Is there a way in vb.net to subclass/hooking in to any controls scroll bar and change it is colours etc (I saw this once in C++ but lost it). It�s ok for MS giving us user owner drawn controls, or at the very least allowing us to draw the controls information but it looks dam write awful if the scroll bar does not fit into the GUI.
View 8 RepliesI tried to use this code in the form:
AddHandler MyControl.MouseDown, AddressOf StartDrag
This wont give me an error, but it doesn't happen anything when I mouse down on the Control.
the same doesn't work if I put it in the user control.
Private Sub StartDrag(ByVal sender As Object, ByVal e As MouseEventArgs)
Dim Box = CType(sender, Control)
Box.Tag = New DragInfo(Form.MousePosition, Box.Location)
End Sub
I'm writing some VB2008 code to control four 7-seg LEDs I bought from Velleman. They came with some example code in VB 5.0, and with instructions telling me to input 5 bytes at a time in the format Chr$() & Chr$() & etc. for the rest of the 5 bytes. When I try to do this using VB2008, it rejects the $ sign, so I've tried it using the Chr() format, which VB2008 allows. However, it doesn't work. Is Chr() the new version of Chr$() or are they different entities? In sending data to the LEDs, I'm using LiveComPort.WriteLine() as my command. (My serial port is called LiveComPort) I also tried it with LiveComPort.Write() asthe command. I know that my serial port and the LEDs are working, because they respond to the demo program provided by Velleman.
View 7 RepliesThere is a class in this datalayer that subclasses System.Data.Datatable. So for example if I populated a System.Data.Dataset and then tried to put the first table of this dataset into this class like so:
Code:
Dim dt as new myDatable
dt = ds.Tables(0)
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I want to create a subclass of a class that has some shared methods. These shared methods all call one specific method. But I can't redefine that specific method in the subclass. If I try to make it overridable in the parent class, it says that shared and overridable can't both be used.
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i used an old VB6 algorithm to subclass a window and made a few changes at the 'hook method' to make it work in .NET.
Private Declare Function SetWindowLong Lib "user32.dll" Alias "SetWindowLongA" (ByVal hWnd As Integer, ByVal nIndex As Integer, ByVal dwNewLong As delWindowProc) As Integer
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I'm listening for the WM_SETCURSOR messages and setting the cursor there, it works most times, but not always. I've seen two other cases that I need to catch:
WM_PAINT: At least after a WM_LBUTTONDOWN the cursor is painted somehow without calling WM_SETCURSOR... WM_CAPTURECHANGED: Happening sometimes when the mouse is down and moving it.
Even doing all this the cursor sometimes flickers and the original one can be seen in some cases (eg: the instant when you roll over some object that sets the cursor to something else). I've been trying to look for some other patterns or messages but didn't see anything that would solve this problem.
I was just wondering today if it's possible to get an IE8 browser control for use in VB2008? I noticed that on one of my systems (running vista) that I only have the IE6 webbrowser control, but on my Windows 7 computer, I have the IE7 control? Can anyone explain this and tell me where to get the IE8 webbroser control?
View 1 RepliesI want to control the "My Cafe Pro" application using vb2008 as the front-end. The main function of "My Cafe Pro" is a time logger. The server can control all the clients connected to it (e.g shutdown). I want to control "My Cafe Pro" that even i don't actually open it. For example, i want to create a time code using the vb2008 program, i only click one button and bang!, the code was created on the "My Cafe Pro" application.
View 1 RepliesSuper newbie here and I recently signed up just to address my problem. Please help me convert or at least tell me what to do on the following code to my vb2008.I saw this listing on a website and I like its simplicity. It was written in vb6.
here's the snippet:Design the form. Create a Command Button named as Command1 and copy that and paste it 11 times. This will create a control array.Then assign the text naming it 0-9 plus (.)dot and they are under one control array. Likewise create cmdOperator control array for the operators Add, Subtract, Multiply and Divide. One button for equals and one for clear. All in all 17 buttons. 1 textbox serves as input and output.
Sorry if I'm in a rush here( I am already) but vb2008 its hard for me to learn control array. I have read a few post awhile here dealing with arrays in vb2008 but I'm overwhelmed with info and confusing for me to grasp the idea.
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I see no options to change. I see the HTML icon but it does not seem to activate. OPtion at the bottom HAS CODE is checked. This code worked in VB2008 but I get the indicated error in VB 2010. I would like to understand what changed.
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I'm working on a game for school, and having a bit of trouble getting keys to control movement properly. When I press down the correspondant arrow key to move the picturebox, it moves the picturebox once, then stops, waits, and then starts moving again continuously (like when you hold down a key in a word processor and it stalls for a bit before repeating the character).the code I'm currently using to move the picturebox is (moving it left as an example)
Private Sub Form1_KeyPress1(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Me.KeyPress
If e.KeyCode = Keys.Left Then
Dim x, y, x2 As Integer
[code]....
how to remove the delay and head straight into the consistant movement?
I am trying to created a simple media player program. I have a Windows Media Player control on a form (renamed it wmp1) and a listbox that creates a list of filenames from a given folder location.When i click on a filename from the listbox, i set the wmp1.url to the filename in the listbox and all is good as the wmp1 control automatically plays the file chosen form the listbox.
View 9 RepliesWhat is the correct way to find the client area of the webbrowser control, WITHOUT the scroll bars ?
Any area/rectangle I get from the control seems to give me the entire control size, including scroll bars wether they are there or not.
I have tried detecting whether scroll bars are present and finding how wide they are to subtract from the entire control width, but have found no reliable way to acheive this.
I am trying to find the actual size of the window I can see if when the web browser control is showing the web page, not including the scroll bars.
I want to know how to hook a tcp connection of another program and listen them. I dont need to manipulate the packets though.I just want to record for example chat messages.
View 1 RepliesI'm working on a tool that requires overlays ala X-Fire. I'm hoping to do it in C# or VB.NET rather than resorting to C++, but the only solutions i've found for .NET cause a large performance hit (~20FPS in games). Take a look here: [URL]
View 1 RepliesI have been working on a project for some time now and I am stuck. I am trying to sense when a navigation software speaks so i can mute the volume of everything else on the computer.
my problem is that i cant properly sense the audio of the software. i am using windows 7 and vb.net. i have done a good amount of research, but i have not come up with an answer.
i am almost positive that i need to intercept the win32api call of the software to trigger the mute that i will use. i dont know how to do this, all the information i can find that is even close to this subject is for 98, nt and 2k.
does anyone know of any books (or websites) that contain information on this subject?
How can I disable Alt-F4 and Ctrl-Alt-Del?Can I lock all combinations of a key with the Alt key? I got a sample from the internet, it only can disable Alt+Tab, Alt+Esc, Ctrl+Esc, Windows Key
Select Case wParam
Case 256, 257, 260, 261
'Alt+Tab, Alt+Esc, Ctrl+Esc, Windows Key
blnEat = ((lParam.vkCode = 9) AndAlso (lParam.flags = 32)) Or _
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Where can I see the button code list in lParam.vkCode = ?How can I make it able to disable Alt-F4 and Ctrl-Alt-Del or disable all combinations of a key with the Alt key?
I play a midi file using this simple win32 api call:
MidiMsg = "open " & c_midiFile & " type sequencer alias mid1 notify"
ret = mciSendString(MidiMsg, "", 0, Form1.Handle)
MidiMsg = "play mid1"
ret = mciSendString("play mid1", "", 0, Form1.Handle)
Callback message MM_MCINOTIFY has a value of &H3B9 (found it using "spy++")I have to know when this message (MM_MCINOTIFY) is fired and read his parameters. In an old version of code I've written years ago in VB6 i had to use CallWindowProc and SetWindowLong win32 api, but now in VS2005 i cannot get it to work.Still I have to try with unmanaged code or are there any other ways to do this in vb .net?
i found an example for hooking global mouseclicks, but i can't get it running.the error is in the start subroutine, -SetWindowsHookEx failed.what am i doing wrong?
Imports System.Runtime.InteropServices
Public Class UserActivityHook
Public Delegate Function HookProc(ByVal nCode As Integer, ByVal wParam As Integer, ByVal lParam As IntPtr) As Integer
Public OnMouseActivity As MouseEventHandler[code]....
I have been working in an Migration Application where i find out some weird problem , Leave Event Fires twice causing validation to fire twice , hence i want to intercept the events to be processed by application..Hence require help in hooking the delegates so that i can get a list of the events that are to be processed .If anybody can help me out by giving some info or code as how to implement hooking in a textbox leave event/
View 1 RepliesI am not very familiar with VB.NET so I don't know if this is possible.Some code I am working on is setting the properties of a very large class. In the setter of each property an event is raised to indicate that the class data has changed. An event handler then serializes the instance of the class to a database.Obviously I do not want this to happen after each property is set, so I need to either have a delay before saving, or something else.I am keeping a large list of instances in a cache implementation already, so one option would be to only process the cache every now and then and save all unsaved instances in cache to the database.So I tried to see if I could derive a class from Application (and override DoEvents), but it is NotInheritable, so no luck there.
View 3 RepliesHas anyone ever come across a way of a way to create an app that kind of mimics what Terminal Services manager does in Windows2003/XP.
I would like to write something that would either go and query a farm of server every n secs a get me a list of users logged in, there process's etc or do maybe type a username in and it goes and finds the user in the farm and returns their details.
I currently have software that sends out plain text(i.e. 'X') to comm 1 port and was wondering if there was any way to capture that plain text and also respond to that port on the same compute as the port without having anything plugged into the machine (i.e. 9 pin serial cable). I am trying to avoid buy any more hardware as this is an objective to acutally cut down on hardware.
View 1 RepliesI'm trying to hook the keyboard to make some action when I'm running a DirectX application. I want to press some keys like "F2" or "pagedown" when I'm running dx app and see msgbox appears. Can anyone show me the code?
View 1 RepliesBasically, I have an app that communicates with a server. I need a way to monitor all the sent and received packets that are being transmitted through the app. I've been killing myself the past two days trying to figure a way to hook into ws2_32.dll to monitor these packets but I can't find a way!
View 2 RepliesI have been trying to build a game bot in vb.net.One of the main problems is getting access to the text the game prints on the screen so I have been trying to hook the games calls to the windows api drawtext and textout functions.I have been hunting for examples of how to set up a hook in vb.net for a long time without any luck.I have found it impossible to translate examples in old school vb, C++, and C#.For convenience's sake I would like to use the freely available deviare and/or easyhook libraries.
View 2 RepliesIm making an application that is keeping an eye on an external application that does not have an API. I'm interested in getting notified when the external application changes its main window title. My idea is to somehow register a hook that will notify my application.
View 2 Replieshow to make program for hooking/inject .dll file into main.exe I want to make 1 program to inject/hook .dll file to main.exe fast . Its about the game MU Online.
View 2 Replies