.net - Mouse Hook In .NET And Windows Forms?

Nov 15, 2009

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!

[Code]...

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VS 2010 Way To Control Mouse Wheel Rotation With A Simple API / Without To Hook Mouse?

May 24, 2012

The GetAsyncKeyState Api does'nt recognizes the mouse wheel rotation, I see.Is there way to control the mouse wheel rotation (always, not only when the pointer is over a form of mine) with a simple API, without to Hook the mouse?

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Low Level Mouse Hook In VB

Aug 4, 2011

I 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?

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Hook Mouse For All Apps / Desktop?

Sep 16, 2010

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?

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Setup Mouse And Keyboard Hook?

Apr 10, 2009

How do I setup the mouse hook and keyboard hook?

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Determine When A Mouse Hook Has Handled Last Message?

Nov 16, 2009

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]...

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Hook Into The Mouse Click On A Command Button?

Feb 24, 2011

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?

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VS 2010 - Global Mouse Hook - Can't Cross-threads

Jun 29, 2010

[Code]...

This was the code and this is the thread HERE Ok its working and everything but when i want to perform something when click is noticed it says i cant cross-threads

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VS 2010 - Hook Mouse Error (DataType Mismatch)

May 21, 2011

I'm using code from here - [URL]. And I'm getting the old
A call to PInvoke function 'EliteSwitch!EliteSwitch.MouseHook::CallNextHookEx' has unbalanced the stack. This is likely because the managed PInvoke signature does not match the unmanaged target signature. Check that the calling convention and parameters of the PInvoke signature match the target unmanaged signature.
Error on this line
Return CallNextHookEx(MouseHook, nCode, wParam, lParam)
I've tried changing variable types but I can't get it.

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Intercepting Mouse Events Using A Global Hook Stop An Action From Happening?

Jan 17, 2010

I'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]...

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When Using Mouse Events And E As System.Windows.Forms.MouseEventArgs

Oct 12, 2010

When I use e.X or e.Y I get the X,Y coordinates of the mouse and it works fine.But when I use e.Button I get long numbers.

Button 1 = 1048576
Button 2 = 2097152
Button 3 = 3145728
And so on...

Why does it return these large numbers? Why not 1, 2, or 3?Is there more data in those large numbers?

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Hook Implementation In Windows Form?

Jul 29, 2009

I 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

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Mouse Hook In X-axis And Y-axis Coordinates?

Aug 14, 2011

I am having trouble in getting the coordinates of x-axis and y-axis in low level ouse hook...all I am getting is values in x-axis listbox and in y-axis listbox I am getting zeros......why? and my second problem is I am calling the setcursorpos
function in a for loop because I want to automate mouse movements and clicks, but setcursorpos function is not working , maybe because I am getting the coordinates wrong.....here is my code

low level mouse hook

Public Class MouseAutomating
Inherits HotKey
Public lstbox As New ListBox

[code]...

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Forms :: Two Event Methods - Mouse Click And Mouse Down For A Single Button In A Form

Feb 1, 2009

I am new to VB.NET, Now i'm working with Events in VB.NET, I have two event methods, Mouse Click and Mouse Down for a single button in a form, I have displyed a message in each of these methods but only mouse down event is triggered. Why Mouse Click is not triggered? Similiarly I Did the same for Mouse Enter and Mouse Move for a particular button, in this case both the events are triggered.

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Operator '*' Is Not Defined For Types 'System.Windows.Forms.VscrollBar' And 'Systems.Windows.Forms.VscrollBar

Oct 29, 2011

I am trying to use values from form1 in my project, in form2, but Im not sure how to do it. I've tried

txtboxTotal = (Form1.vsbLength * Form1.vsbWidth) * Pattern

But I get: operator '*' is not defined for types 'System.Windows.Forms.VscrollBar' and 'Systems.Windows.Forms.VscrollBar.'

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Implicit Conversions From 'System.Windows.Forms.Control' To 'System.Windows.Forms.Webbrowser'

Sep 8, 2010

I have the code which checks if there is a selected tab

Private Function GetBrowser() As WebBrowser
If TabControl1.SelectedTab IsNot Nothing Then
For Each c As Control In TabControl1.SelectedTab.Controls
If TypeOf (c) Is WebBrowser Then
Return c

[Code]...

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Unable To Cast Object Of Type 'System.Windows.Forms.Button' To Type 'System.Windows.Forms.TextBox'

Apr 28, 2009

I have a panel with some controls in it (several textboxes, a slider, 2 buttons, and a small groupbox).. When I click a button, I want all of the textboxes within the panel to be readonly... So I have this code: [code] When I run it though, I get the following error:Unable to cast object of type 'System.Windows.Forms.Button' to type 'System.Windows.Forms.TextBox'.If I remove a button, it moves on to give me the same error but for a label..

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Forms :: Getting Mouse Position Over An Object?

Jun 28, 2010

Right now I have a program in which I'm trying to read the mouse cursor position relative to the window form, but I am currently having a problem. It only works if the mouse is directly over the form, and it will not work if I hold the mouse over an object, such as a label, a command button, or a picturebox. I tried resolving this by adding handle clauses for mousemove over those objects, however, while it works for the label, it doesn't work for the pictureboxes. This is because the pictureboxes are in an array and are defined at runtime.How would I go about resolving this?

code in question
Private Sub Form1_MouseMove(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles Me.MouseMove, lblStat.MouseMove

[code]...

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Forms Controls And Mouse Events?

Jun 16, 2009

I have a form with 2 contols that I with to connect by drawing a "wire" on the screen. It goes like this: you mouse down on the first control then move the mouse while holding the mouse button down. When the mouse is over the 2nd control the mouse button is released and the controls are wired.

So I am playing with mouseup, down, move, etc. When the mouse is over the first control I get mouse moves from that control, but when it moves off the events stop, and I get no events from the form even though the mouse is there.

Is there a way to do this? I have seen it done in a Java app. I could brute force it and just draw a box on the form instead of a control, but that sounds like a step back.

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Jul 9, 2010

I have a basic three form application. It doesn't seem to close after navigating through forms. If I were to open the application, and the main form is displayed. If I press the X button, the application closes fine(Goes from processes) If I were to open the application, and then navigate from the main form to another form using me.hide & form1.show, and press the red X on Form1, the application again, closes fine.

[Code]...

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[Code]...

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Application That Has Multiple Front Ends Developed Using Windows Forms / WPF / ASP / Compact Framework Mobile Forms

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Forms :: Startup A Second Windows Forms Inside The Parent Form?

Aug 26, 2010

I would like to know if its possible to start up a second windows forms inside the parent form. Ex: A button is pressed and a new form is showed. I would like to keep that new form inside the parent form, and have it not be able to go outside the parent form.

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Forms :: String Cannot Be Converted To System.windows.forms.label

Mar 31, 2010

I am writing a program for my A-level coursework But for some reason I got this build error this has never occurred to me before, I have no idea why I can't use string for the name of my form.

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Jan 9, 2012

a program and i need to have a button put a file into a folder, i know how the button works i already have it doing some other stuff. i just don't know the code to copy and past it to a folder.

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Mar 5, 2012

When I add a new, empty form to my VB.NET VS9 project, the linenherits System.Windows.Forms.Formis missing.What am I doing wrong here?I thought it would be added automatically.I experienced that some thing get weird if this line is not there (Form_Load is not firing, I think).

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Mouse Move Out Of Windows Form?

Mar 12, 2010

im trying to make a standby mode for my program that resets the timer when the mouse moves, is it possible to make the mouse move event trigger when the mouse moves anywhere on the desktop not just inside the form window because i cant find any articles regarding this online and i don't know how to do it

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Simulating Mouse Click Through Windows API

Sep 12, 2010

When I execute DoMouseClick then I get a PInvkokeStackImbalaced. I searched on google and tried some other things nothing really worked.
Public Class PerformClick
Declare Sub mouse_event Lib "user32" Alias "mouse_event" (ByVal dwFlags As Long, ByVal dx As Long, ByVal dy As Long, ByVal cButtons As Long, ByVal dwExtraInfo As Long)
Const MOUSEEVENTF_LEFTDOWN As UInt32 = &H2
Const MOUSEEVENTF_LEFTUP As UInt32 = &H4
[Code] .....

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Windows Form Which Follows Mouse Cursor

Jul 7, 2011

i'm trying to work on a seamless 'help' system on my new application, so that throughout the application, people can hover over different aspects of it to display a small window of help, which follows the cursor until the user leaves the aspect they hovered over. I have had a look around and can't find any good code for this, and tried some myself without success.

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Windows Hooks Mouse Right Click?

Feb 9, 2009

I have never written a hook before. Can anyone point me in the right direction of good tutorials to get starrted on hooks. I'm looking to write something so when a user right clicks on a file, they have an option to copy the path and filename of that file to the clipboard.

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