I'm trying do capture the Excel event Sheet_Activate and put some information in a list box control. I can capture the event, but when I try to add some information in the list box controle, an error message is showed. Here is my code:
Imports Excel = Microsoft.Office.Interop.Excel
Public Class WorkbookInfo
Private WithEvents _ExcelApp As Excel.Application
[code]....
I need to access the current instance of MS Excel. To do that, I wrote the following code:
Imports Excel = Microsoft.Office.Interop.Excel
Imports System.Diagnostics
Private _ExcelApp As Excel.Application
[Code].....
The code runs nice, but it has a problem: After the user close the Excel application (click button X - note: no other instance of Excel exists), if you open the Windows's task manager, its possible to see the process Excel.exe.
If I open and close the Excel application, there is no process Excel.exe, but if I run my code with the Excel application openned, after the user close the Excel application, the process Excel.exe isn't finished.
I'm using a textbox to define a hotkey, and I need to make the textbox receive key events and prevent the form from receiving them.The reason it's a problem is because Tab (and probably other keys) is a valid key, but the form uses that as a shortcut, so the textbox never receives the keypress.
View 5 RepliesI have a Windows Forms app, with a TabControl. On the first tab (which is a bunch of textboxes), the CTRL-x/c/v keyboard shortcuts for cut/copy/paste work as expected. On the second tab (which is a DataGridView), the keyboard shortcuts don't do anything. How do I hook up these keypress events to my cut/copy/paste routines? I already have great cut/copy/paste routines for my DataGridView--and they work fine when launched from the tooltip buttons or menus. I just need to hook up those subs to the CTRL-x/c/v keypress events.
View 2 RepliesI'm attempting to intercept and interrupt mouse events. Lets say I wanted to disable the right mouse button down event, or even the mouse move event. I haven't been able to figure out the interrupting part.
I am using the (I assume pretty widely used) following code for Global Hooking of the mouse.
[Code]...
When working with Excel in this context, is there a way to get the Excel Application/Workbooks/Sheets events?
Imports System.Runtime.InteropServices
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
If Process.GetProcessesByName("Excel").Count <> 0 Then
[code]....
I am using vb .net and office 2007 with Microsoft.Office.Interop.Excel.Application loaded in a vb net project.I have this excel file filled with buttons and drop down objects... i need to change the value of the drop downs and then click a button, all this inside vb .net.I have my workbooks, sheets and ranges all setup, i just need a headstart to, for example, change a drop down value, to say... item number 2.
View 1 Repliesalmost perfectly works to disable specific keys. but 1problem. for example : checkbox1 checked and then press button1 L win key disable its okey.but then i press button2 to active keys and press again button1.this time not working disabling keys.
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I have been trying to implement the jQuery weekcalendar using .net. What I can't seem to figure out is why weekcalendar states events.events is undefined after I make an ajax call to a webmethod I created which returns JSON. Below is the relevant code:
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I want to make Keybord events and mouse events for learning and educational Purpose.
1. In Form any object like A "picture box" move by Arrow keys .
2. Picture Box Contain many Picture i want change Picture With next and Previos By Arrow keys.
3. I contain Voice of alphabet in Mp3.When i Press any button in textbox then its work.
4. Mouse Pointer Change My Own.
5. I click any Object or any thing By mouse its noice clicking sound like Tik Tik Tik.... Question No 3 is very hard to do . but not im possible
Is there any way I can install a global hook or something else on the start of external process. WH_CBT hook, as it appears can only intercept events for processes that have windows, but what if I want to intercept the start/stop of a windowless application or a windows service? Is there any way to do it using .NET?Generally, I want my application to receive a notification of some process being launched knowing only an executable name.Presently I simply use a timer to iterate through running processes, but I wonder if there a better way to do it?
View 4 RepliesI have an app where I need to hook into a particular control's horizontal scroll event. I'm not real experienced in hooking into Windows events.
View 1 RepliesI want to hook keyboard with vb , so that whenever my application written in vb runs it will capture all the keys pressed from the keyboard and show all the keys being pressed in a textbox on window's form
View 1 RepliesI want to hook low level Mouse hook in vb, and after that I want to save the X-axis, Y-axis and clicks(Right/Left) into database for later use or automation..But I don't understand that how should I save the X-axis, Y-axis and clicks into a MS SQL databse and later retrieve them?
View 2 RepliesI'm writing a code to use it in a keyboard spy program , and I'm using hook techneque with this , but the problem is that : if I ForExamle clicked on Shift and number 2 it doesn't give me At (@), I want it to give me at (@) ..
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url...This example works on a my 32 bit XP machine, but it does not work on my Vista Ultimate 64 bit machine. The example is supposed to hook notepad so that whenever I type a character in notepad, a text box recieves the same character. This works on XP, but on Vista 64, nothing happens.I should probably say that when I first ported the example to Vista, I ran into 2 problems, which I think I correctly fixed.
1. I was getting a BadImageFormatException when the DLL was first trying to be accessed. I fixed this by setting the target platform in the VB project to be x86.
2. I was getting a DllNotFoundExeception, so I placed the "MainHook.dll" file in both:[code]I have a couple of theories, but I'm a bit of a beginner when it comes to hooking. Could this be happening because Notepad is a 64 bit application and the hook is written in 32 bit? I have the express version of VC++, so I can't create a dll targetted to 64 bit, so I haven't tried that.
I have a form that is displayed, not by ShowDialog, but by setting its visible property to true. This is so it behaves like a dropdown.The form installs a mouse hook, using SetWindowsHookEx(WH_MOUSE, ...).
I detect if the mouse is clicked outside of the dropdown and if so, return 1 in my HookProc method and close the dropdown.The strange thing is, if I click outside of my drop down on to a textbox, the textbox still receives the mouse click, after my dropdown closes, even though it's been handled by my HookProc method.It gets stranger... If I click on a label or button, they do not receive the mouse click, as expected, after the drop down closes!
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I´m using the SetWindowsHookEx API to hook the keyboard, and it works, but when I get vkCode from the structKBDLLHOOKSTRUCT it gives me way too high numbers instead of the ASCII byte I expect to receive. Also, the numberchanges each time I press the same key, so obviously something is wrong. I´m on Windows XP 32 bits, VB 2008 Express, Net. Framework 3.5 SP2. This is the relevant code (condensed, will
View 3 RepliesI implemented Hooks in windows form. I want to set the tab order according to my order
But it is taking arbitrary . can you help how to set tab order in windows form in hook
Using VB 2010, is it possible to capture all mouse clicks and determine what was clicked?We're trying to develop a small utility that will pop up context based menus to fill in application forms and common strings for terminal sessions.Basically, whenever I middle click I want my app to determine if the window was an occurance of PuTTY. If so, check the titlebar for certain strings and send keystrokes to that window based on the titlebar text.If VB 2010 can't do this, what should I be looking for? Will VB6 apps do the job? Will they work on a Windows 7 PC?
View 2 Repliesi am trying to create a keyboard hook so when i type out something my app will pop up, regardless of which app has focus at the time.i coded this already in a form which then opens up a second form but now i trying to make it so my module opens first, and then it will open up my secondary form.but the issue i am having is when the module loads and starts the keyhooking, i get an error on the following code saying"Overflow Exception was unhandled, Arthmetic operation resulted in an overflow".[code]
View 1 RepliesI recently order to monitor third-party software program written in VB.NET to call their own
View 5 RepliesHow do I setup the mouse hook and keyboard hook?
View 1 RepliesI have a program that u record your clicks then you press a button (Ctrl + E) then it plays them back. What I want is for Ctrl+E to stop them, It would work but it seems like its being overpowered by the mousemoving and clicking. The keyhook did already work before I started on the playback part.
Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
If m.Msg = WM_HOTKEY Then
If m.WParam = 2 Then
If started2 = True Then
started2 = False
ElseIf started2 = False Then
[Code] .....
What I'm looking to do is 'hook' a physical drive connected to the system so I can process data coming through the API before it's written to the disk. I have a sense DeviceIOControl is where I should be, but I can't seem to find any IOCTL code that uses a callback (which is what I expect I should be using to scan/process data on its way through the API).
View 2 RepliesI'm trying to create a CBT hook to an application, in this case Notepad.
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EDIT: I have also tried it on a Windows XP system now, and it doesn't work there either.
I have a form, that acts like a drop-down, that I display non-modal. I attach a mouse hook to the form to determine when the mouse is clicked out of it, so that I know to close it - by setting Visible = False.
Because I want the HookProc to handle the last click, I can't dispose the Hook or my Dropdown until I'm sure that my event handler has returned to the HookProc.[code]...
I must say personally, the WithEvents system is, shall we say, open to extreme false sense of security, so to speak. I like a lot of automation in my code, and tend to provide ways to do things manually, with a "default" behavior encoded. However, as I have just discovered, the withevents doesn't HOOK the event delegate until after creation. So even when you do New MyObject(), if an event is triggered during the Sub New() process, the delegate hasn't been assigned yet, and thus the event (which in my current situation is extremely important) never triggers. which begs the question the point of the WithEvents other than removing "AddHandler" lines from procedural code. Sure it saves on typing, due to code completion, but if that's it, that isn't much of a benefit. One would think that using the WithEvents would allow me to do:
PUblic Sub New()
MyBase.New()
RaiseEvent MyEvent()
End Sub
Tragically, this does NOT work, which royally screws up my lazy loading techniques and other such tricks that were supposed to make my code simpler to use, and instead has made things 10 times more complex, as I have to specifically alter class initialization sequences to be outside of class instantiation. (which should be one in the same, imho).Jaeden "Sifo Dyas" al'Raec Ruiner
"Never Trust a computer. Your brain is smarter than any micro-chip."
PS - Don't mark answers on other people's questions. There are such things as Vacations and Holidays which may reduce timely activity, and until the person asking the question can test your answer, it is not correct just because you think it is. Marking it correct for them often stops other people from even reading the question and possibly providing the real "correct" answer.
I need to write an application that can validate wether or not a proper process was followed based on information that was entered into another .NET appliction. Basically, I need to be able to intercept a mouse click on a button in another application so that instead of submitting the data it triggers my validation code then cancel the action if need be.
We do not have the code to the other application. I have everything I need perform the validation. The only thing I don't know how to do is intercept the mouse click on the button control of the other application. Can some one show me how this is done?
Is it possible to hook registry changes and maybe even file system changes in VS 2010?
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