How can I capture mouse events that occur outside of a (WPF) window?

Question

I have a Window element that has WindowStyle=\"None\" and AllowsTransparency=\"True\", therefore it has no title bar and supports tran

Answer 1

Try it this way:

// method to convert from 'old' WinForms Point to 'new' WPF Point structure:
public System.Windows.Point ConvertToPoint(System.Drawing.Point p)
{
    return new System.Windows.Point(p.X,p.Y);
}

// some locals you will need:
bool mid = false; // Mouse Is Down
int x=0, y=0;

// Mouse down event
private void MainForm_MouseDown(object sender, MouseButtonEventArgs e)
{
   mid=true;
   Point p =  e.GetPosition(this);

   x = (int)p.X; 
   y = (int)p.Y;
}

// Mouse move event
private void MainForm_MouseMove(object sender, MouseButtonEventArgs e)
{
   if(mid)
   {
        int x1 = e.GetPosition(this).X;
        int y1 = e.GetPosition(this).Y;

        Left = x1-x;
        Top = y1-y;
   }
}

// Mouse up event
private void MainForm_MouseUp(object sender, MouseButtonEventArgs e)
{
    mid = false;
}

Answer 2

I think you are looking for this: Processing Global Mouse and Keyboard Hooks in C#

Url: Processing Global Mouse and Keyboard Hooks in C#

This class allows you to tap keyboard and mouse and/or to detect their activity even when an application runs in the background or does not have any user interface at all.

This class raises common .NET events with KeyEventArgs and MouseEventArgs, so you can easily retrieve any information you need.

There is an example and explain and demo to use.

Great tutorial!

Example:

UserActivityHook actHook;
void MainFormLoad(object sender, System.EventArgs e)
{
    actHook= new UserActivityHook(); // crate an instance

    // hang on events

    actHook.OnMouseActivity+=new MouseEventHandler(MouseMoved);
    actHook.KeyDown+=new KeyEventHandler(MyKeyDown);
    actHook.KeyPress+=new KeyPressEventHandler(MyKeyPress);
    actHook.KeyUp+=new KeyEventHandler(MyKeyUp);
}

Now, an example of how to process an event:

public void MouseMoved(object sender, MouseEventArgs e)
{
    labelMousePosition.Text=String.Format("x={0}  y={1}", e.X, e.Y);
    if (e.Clicks>0) LogWrite("MouseButton     - " + e.Button.ToString());
}

Answer 3

I believe you are reinventing the wheel. Search for "Window.DragMove".

Example:

    private void title_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {
        this.DragMove();
    }