Waiting for mouse click

What Programming language ?

Vsual Studio 2005 - C#

so when you click the button you start some processing, and then immediately suspend the processing and at the same time you want to wait to see if the user clicks on the form someplace? to do what then? continue the processing or do something else?

Excuse me for my late. Suppose that I want to receive some points by clicking on the form and after receiving all of them I want to show a polygon resulted from connecting them. I want that program waits until at least 3 points have been selected by user on the form.

The whole "wait" is purely user perception.Just create a bool flag that activates after you press the button.

namespace WindowsFormsApplication2
{
public partial class Form1 : Form
{
List<Point[]> FinalPoints;
List<Point> NeededPoints;
public Form1()
{
InitializeComponent();

NeededPoints = new List<Point>();
FinalPoints = new List<Point[]>();
}
bool StartFlag;
Graphics grph;
private void MainButton_Click(object sender, EventArgs e)
{
if (MainButton.Text == "Start")
{
StartFlag = true;
MainButton.Text = "Stop";
}
else
{
StartFlag = false;
MainButton.Text = "Start";
}
}

private void Form1_MouseClick(object sender, MouseEventArgs e)
{
if (StartFlag)
{
NeededPoints.Add(new Point(e.X, e.Y));
this.Invalidate(new Rectangle(new Point(0, 0), new Size(this.Width, this.Height - MainButton.Height)));
}

}

private void Form1_Paint(object sender, PaintEventArgs e)
{
Point[] SelPoints;
if (NeededPoints.Count > 2)
{
grph = this.CreateGraphics();
SelPoints = NeededPoints.ToArray();
FinalPoints.Add(SelPoints);

foreach (Point[] ThreePoints in FinalPoints)
{
grph.DrawPolygon(Pens.Tomato, ThreePoints);
}
NeededPoints.Clear();
}
}
}
}

The "wait" thing is purely user perception.Create a bool flag that activates after you click the button....the drawing happens only if the flag is activated and you have the amount of needed points...namespace WindowsFormsApplication2
{
public partial class Form1 : Form
{
List<Point[]> FinalPoints;
List<Point> NeededPoints;
public Form1()
{
InitializeComponent();

NeededPoints = new List<Point>();
FinalPoints = new List<Point[]>();
}
bool StartFlag;
Graphics grph;
private void MainButton_Click(object sender, EventArgs e)
{
if (MainButton.Text == "Start")
{
StartFlag = true;
MainButton.Text = "Stop";
}
else
{
StartFlag = false;
MainButton.Text = "Start";
}
}

private void Form1_MouseClick(object sender, MouseEventArgs e)
{
if (StartFlag)
{
NeededPoints.Add(new Point(e.X, e.Y));
this.Invalidate(new Rectangle(new Point(0, 0), new Size(this.Width, this.Height - MainButton.Height)));
}

}

private void Form1_Paint(object sender, PaintEventArgs e)
{
Point[] SelPoints;
if (NeededPoints.Count > 2)
{
grph = this.CreateGraphics();
SelPoints = NeededPoints.ToArray();
FinalPoints.Add(SelPoints);

foreach (Point[] ThreePoints in FinalPoints)
{
grph.DrawPolygon(Pens.Tomato, ThreePoints);
}
NeededPoints.Clear();
}
}
}
}

Thanks, your program works excellent, but suppose that there are other buttons. What which I really mean from "wait" is that other buttons preforms no action before clicking all of the points. I can do this by making their Enable property to false. But it is not appropriate in my application. I want that all of the keys and menus be active and their enabled property be true but they perform no task during the entering points.

Thanks again

You got me all confused with what you're trying to achieve.
" What which I really mean from "wait" is that other buttons preforms no action before clicking all of the points ".You have complete power on what should happen when any button is pressed.In the code I gave you, you could add any other button and still execute some other actions regardless of what's happening with the form redrawing.Please explain yourself with a concrete example,maybe that way I'll be able to provide some useful help..

Daniel

Thanks Daniel, you are right using StartFlag in your code I can prevent other controls to do any action. For example if I have a button called FillButton its even handler is as below:
private void FillButton_Click(object sender, EventArgs e)
{
if (!StartFlag)
{
// Do Something
}
}
Thanks again

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