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How can I count number of clicks anywhere on screen in C#?

I am trying to have a C# program running in the background on Windows that will print "Hello!" after seeing that the user has clicked his or her mouse 10 times. But not just in the console window, anywhere on the screen.
The following event handler for click-tracking is from msdn.microsoft.com:
private void OnMouseDownClickCount(object sender, MouseButtonEventArgs e) {
// Checks the number of clicks.
if (e.ClickCount == 1) {
// Single Click occurred.
lblClickCount.Content = "Single Click";
}
if (e.ClickCount == 2) {
// Double Click occurred.
lblClickCount.Content = "Double Click";
}
if (e.ClickCount >= 3) {
// Triple Click occurred.
lblClickCount.Content = "Triple Click";
}
}
But, I'm not sure how to actually use this. When I add this function anywhere, the MouseButtonEventArgs type is undefined.
What "using" statements do I need? How do I actually get this code to run properly -- do I call it once from main? What do I do to call it?
EDIT: Here is a picture showing Visual Studio not understanding MouseButtonEventArgs:

Initially You have to select the form and go to properties, Here you have to go events area and there is MouseClick event. Click that Mouse click. Go to Code behind window. there is the click event generated automatically. In that Form_MouseClick event you can count the number of clicks.
Initially declare a variable
int count = 0;
In method
Private void Form_MouseClick(object sender, MouseEventArgs e)
{
count++;
//add lable which will displays the count value
label.Text=count.ToString();
}
I think which will helps to count the clicks in the form.

I'm not entirely sure what you're trying to accomplish but..
To track user clicks I hooked up the "MouseDown" event on a form in a Windows Forms applications.
From there I check click counts in the event handler.
using System;
using System.Windows.Forms;
namespace WindowsFormsApplicationTest
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent( );
this.MouseDown += Form1_MouseDown;
}
private void Form1_MouseDown( object sender, MouseEventArgs e )
{
// Count clicks
}
}
}

wpf canvas double click

I am trying to fetch a double click from the user on a canvas. I am using the previewmousedown event for this, but it isn't working properly.
The function is as following:
void DrawCanvas_PreviewMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
/* Check if it is a double click */
if(e.ChangedButton == MouseButton.Left && e.ClickCount == 2)
{
//do double click actions
}
else
{
//do single click actions
}
e.Handled = true;
}
I have tried to move it to the previewmouseup function as well, but the clickcount stays on 1.
Anyone an idea why the clickcount doesn't go up?

Instead of using PreviewMouseLeftButtonDown Event, use MouseLeftButtonDownEvent to overcome this Problem.

Disable right click in Win form app

Hii I am making a windows Form application
I added a user control in that application
Is there a way to disable the right click event.
because if I use
Button.click += SomeMethod
It is going to someMethod in case of both (left and right) clicks.
I want to do this action in case of left click only.

Can't you handle which button has been clicked inside of the event?
private void uc_MouseClick(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
//more logic here
}
}

You can detect which button of mouse was clicked inside event handler.
Check MouseEventArgs e argument of handler

You can check the button and call the native onClick for cases of left-button click.
[pseudo code]
SomeMethod(e){
if (e.Button == left){
control.onClick(e);
}
}

you could do number of ways;
1) if you want to use your button.click event then do the code below:
Button.Click += SomeMethod;
private void SomeMethod(object sender, EventArgs e)
{
System.Windows.Forms.Button bt = sender as System.Windows.Forms.Button;
if (bt != null)
{
if (bt.Equals(System.Windows.Forms.MouseButtons.Left))
{
// do something;
}
}
}
2) Or use the mouse clicked event in windows form "button.MouseClick".
Button.MouseClick += SomeMethod;
private void SomeMethod(object sender, MouseEventArgs e)
{
if (!e.Button.Equals(System.Windows.Forms.MouseButtons.Right))
{
// do work
}
}
I was hoping that we could use the e.Handled = true, but in this case neither of the event argument has the Handled property, therefore you have to manually check them.

Did "MouseUp" event change value of NumericUpDown?

I need to determine if the value of a NumericUpDown control was changed by a mouseUp event.
I need to call an expensive function when the value of a numericupdown has changed. I can't just use "ValueChanged", I need to use MouseUp and KeyUp events.
Basically, I need to know:
Did the value of the numericUpDown change when the user let go of the
mouse? If any area which is not highlighted in red is clicked, the
answer is no. I need to IGNORE the mouse up event, when ANYWHERE but the red area is clicked.
How can I determine this by code? I find events a little confusing.

This will fire when the user releases the mouse button. You might want to investigate which mousebutton was released.
EDIT
decimal numvalue = 0;
private void numericUpDown1_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left && numvalue != numericUpDown1.Value)
{
//expensive routines
MessageBox.Show(numericUpDown1.Value.ToString());
}
numvalue = numericUpDown1.Value;
}
EDIT 2
This will determine if the left mousebutton is still down, if it is exit before performing expensive routine, doesn't help with keyboard button down.
private void numericUpDown1_ValueChanged(object sender, EventArgs e)
{
if ((Control.MouseButtons & MouseButtons.Left) == MouseButtons.Left)
{
return;
}
//expensive routines
}
Edit 3
How to detect the currently pressed key?
Will help solve the Any key down, Though I think the only ones that matter are the arrow keys

Problem - I need to IGNORE the mouse up event, when ANYWHERE but the red area is clicked.
Derive a custom numeric control as shown below. Get the TextArea of the Numeric Control and ignore the KeyUp.
class UpDownLabel : NumericUpDown
{
private Label mLabel;
private TextBox mBox;
public UpDownLabel()
{
mBox = this.Controls[1] as TextBox;
mBox.Enabled = false;
mLabel = new Label();
mLabel.Location = mBox.Location;
mLabel.Size = mBox.Size;
this.Controls.Add(mLabel);
mLabel.BringToFront();
mLabel.MouseUp += new MouseEventHandler(mLabel_MouseUp);
}
// ignore the KeyUp event in the textarea
void mLabel_MouseUp(object sender, MouseEventArgs e)
{
return;
}
protected override void UpdateEditText()
{
base.UpdateEditText();
if (mLabel != null) mLabel.Text = mBox.Text;
}
}
In the MainForm, update your designer with this control i.e. UpDownLabel:-
private void numericUpDown1_MouseUp(object sender, MouseEventArgs e)
{
MessageBox.Show("From Up/Down");
}
Referred from - https://stackoverflow.com/a/4059473/763026 & handled the MouseUp event.
Now, use this control instead of the standard one and hook on the
KeyUp event. You will always get the KeyUp event from the Up/Down button only i.e. RED AREA when you click the
spinner [Up/Down button, which is again a different control derived
from UpDownBase].

I think you should use Leave event that when the focus of NumericUpDown control gone, it would called.
int x = 0;
private void numericUpDown1_Leave(object sender, EventArgs e)
{
x++;
label1.Text = x.ToString();
}

How to handle WinForms control click event when it's not a double click

I need to differentiate between a single click and a double click but I need to do this during the click event. I need this because if there's a single click I want to call Function A and if there's a double click I want to call Function B. But Function A must be called only in case of a single click.
How may I achieve this using standard Winforms in C# (or VB)?

click and double click can be handled seperately
click -> http://msdn.microsoft.com/en-US/library/system.windows.forms.control.click(v=vs.80).aspx
double click -> http://msdn.microsoft.com/en-US/library/system.windows.forms.button.doubleclick(v=vs.80).aspx

You will need to use a timer wait "some amount of time" after the click event to determine if the click was a single click. You can use the SystemInformation.DoubleClickTime property to determine the maximum interval between clicks that the system will consider sequential clicks a double click. You would probably want to add a little padding to this.
In your click handler, increment a click counter and start the timer. In the double click handler, set a flag to denote a double click occurred. In the timer handler, check to see if the double click event was raised. If not, it was a single click.
Something like this:
private bool _doubleClicked = false;
private Timer _clickTrackingTimer =
new Timer(SystemInformation.DoubleClickTimer + 100);
private void ClickHandler(object sender, EventArgs e)
{
_clickTrackingTimer.Start();
}
private void DoubleClickHandler(object sender, EventArgs e)
{
_doubleClicked = true;
}
private void TimerTickHandler(object sender, EventArgs e)
{
_clickTrackingTimer.Stop();
if (!_doubleClicked)
{
// single click!
}
_doubleClicked = false;
}

Another options is to create a custom control which derives from Button, and then call the SetStyles() method, which is a protected method) in the constructor and set the ControlStyles flag
class DoubleClickButton : Button
{
public DoubleClickButton() : base()
{
SetStyle(ControlStyles.StandardDoubleClick, true);
}
}