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MouseEventExtArgs.cs
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/
MouseEventExtArgs.cs
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using System;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using MouseKeyboardActivityMonitor.WinApi;
namespace MouseKeyboardActivityMonitor
{
/// <summary>
/// Provides extended data for the MouseClickExt and MouseMoveExt events.
/// </summary>
public class MouseEventExtArgs : MouseEventArgs
{
/// <summary>
/// Creates <see cref="MouseEventExtArgs"/> from Windows Message parameters.
/// </summary>
/// <param name="wParam">The first Windows Message parameter.</param>
/// <param name="lParam">The second Windows Message parameter.</param>
/// <param name="isGlobal">Specifies if the hook is local or global.</param>
/// <returns>A new MouseEventExtArgs object.</returns>
internal static MouseEventExtArgs FromRawData(int wParam, IntPtr lParam, bool isGlobal)
{
return isGlobal ?
FromRawDataGlobal(wParam, lParam) :
FromRawDataApp(wParam, lParam);
}
/// <summary>
/// Creates <see cref="MouseEventExtArgs"/> from Windows Message parameters,
/// based upon a local application hook.
/// </summary>
/// <param name="wParam">The first Windows Message parameter.</param>
/// <param name="lParam">The second Windows Message parameter.</param>
/// <returns>A new MouseEventExtArgs object.</returns>
private static MouseEventExtArgs FromRawDataApp(int wParam, IntPtr lParam)
{
AppMouseStruct marshalledMouseStruct = (AppMouseStruct)Marshal.PtrToStructure(lParam, typeof(AppMouseStruct));
return FromRawDataUniversal(wParam, marshalledMouseStruct.ToMouseStruct());
}
/// <summary>
/// Creates <see cref="MouseEventExtArgs"/> from Windows Message parameters,
/// based upon a system-wide global hook.
/// </summary>
/// <param name="wParam">The first Windows Message parameter.</param>
/// <param name="lParam">The second Windows Message parameter.</param>
/// <returns>A new MouseEventExtArgs object.</returns>
internal static MouseEventExtArgs FromRawDataGlobal(int wParam, IntPtr lParam)
{
MouseStruct marshalledMouseStruct = (MouseStruct)Marshal.PtrToStructure(lParam, typeof(MouseStruct));
return FromRawDataUniversal(wParam, marshalledMouseStruct);
}
/// <summary>
/// Creates <see cref="MouseEventExtArgs"/> from relevant mouse data.
/// </summary>
/// <param name="wParam">First Windows Message parameter.</param>
/// <param name="mouseInfo">A MouseStruct containing information from which to contruct MouseEventExtArgs.</param>
/// <returns>A new MouseEventExtArgs object.</returns>
private static MouseEventExtArgs FromRawDataUniversal(int wParam, MouseStruct mouseInfo)
{
MouseButtons button = MouseButtons.None;
short mouseDelta = 0;
int clickCount = 0;
bool isMouseKeyDown = false;
bool isMouseKeyUp = false;
switch (wParam)
{
case Messages.WM_LBUTTONDOWN:
isMouseKeyDown = true;
button = MouseButtons.Left;
clickCount = 1;
break;
case Messages.WM_LBUTTONUP:
isMouseKeyUp = true;
button = MouseButtons.Left;
clickCount = 1;
break;
case Messages.WM_LBUTTONDBLCLK:
isMouseKeyDown = true;
button = MouseButtons.Left;
clickCount = 2;
break;
case Messages.WM_RBUTTONDOWN:
isMouseKeyDown = true;
button = MouseButtons.Right;
clickCount = 1;
break;
case Messages.WM_RBUTTONUP:
isMouseKeyUp = true;
button = MouseButtons.Right;
clickCount = 1;
break;
case Messages.WM_RBUTTONDBLCLK:
isMouseKeyDown = true;
button = MouseButtons.Right;
clickCount = 2;
break;
case Messages.WM_MBUTTONDOWN:
isMouseKeyDown = true;
button = MouseButtons.Middle;
clickCount = 1;
break;
case Messages.WM_MBUTTONUP:
isMouseKeyUp = true;
button = MouseButtons.Middle;
clickCount = 1;
break;
case Messages.WM_MBUTTONDBLCLK:
isMouseKeyDown = true;
button = MouseButtons.Middle;
clickCount = 2;
break;
case Messages.WM_MOUSEWHEEL:
mouseDelta = mouseInfo.MouseData;
break;
case Messages.WM_XBUTTONDOWN:
button = mouseInfo.MouseData == 1 ? MouseButtons.XButton1 :
MouseButtons.XButton2;
isMouseKeyDown = true;
clickCount = 1;
break;
case Messages.WM_XBUTTONUP:
button = mouseInfo.MouseData == 1 ? MouseButtons.XButton1 :
MouseButtons.XButton2;
isMouseKeyUp = true;
clickCount = 1;
break;
case Messages.WM_XBUTTONDBLCLK:
isMouseKeyDown = true;
button = mouseInfo.MouseData == 1 ? MouseButtons.XButton1 :
MouseButtons.XButton2;
clickCount = 2;
break;
}
var e = new MouseEventExtArgs(
button,
clickCount,
mouseInfo.Point,
mouseDelta,
mouseInfo.Timestamp,
isMouseKeyDown,
isMouseKeyUp);
return e;
}
/// <summary>
/// Initializes a new instance of the <see cref="MouseEventExtArgs"/> class.
/// </summary>
/// <param name="buttons">One of the MouseButtons values indicating which mouse button was pressed.</param>
/// <param name="clicks">The number of times a mouse button was pressed.</param>
/// <param name="point">The x and y -coordinate of a mouse click, in pixels.</param>
/// <param name="delta">A signed count of the number of detents the wheel has rotated.</param>
/// <param name="timestamp">The system tick count when the event occured.</param>
/// <param name="isMouseKeyDown">True if event singnals mouse button down.</param>
/// <param name="isMouseKeyUp">True if event singnals mouse button up.</param>
internal MouseEventExtArgs(MouseButtons buttons, int clicks, Point point, int delta, int timestamp, bool isMouseKeyDown, bool isMouseKeyUp)
: base(buttons, clicks, point.X, point.Y, delta)
{
IsMouseKeyDown = isMouseKeyDown;
IsMouseKeyUp = isMouseKeyUp;
Timestamp = timestamp;
}
internal MouseEventExtArgs ToDoubleClickEventArgs()
{
return new MouseEventExtArgs(Button, 2, Point, Delta, Timestamp, IsMouseKeyDown, IsMouseKeyUp);
}
/// <summary>
/// Set this property to <b>true</b> inside your event handler to prevent further processing of the event in other applications.
/// </summary>
public bool Handled { get; set; }
/// <summary>
/// True if event contains information about wheel scroll.
/// </summary>
public bool WheelScrolled
{
get { return Delta != 0; }
}
/// <summary>
/// True if event signals a click. False if it was only a move or wheel scroll.
/// </summary>
public bool Clicked
{
get { return Clicks > 0; }
}
/// <summary>
/// True if event singnals mouse button down.
/// </summary>
public bool IsMouseKeyDown
{
get;
private set;
}
/// <summary>
/// True if event singnals mouse button up.
/// </summary>
public bool IsMouseKeyUp
{
get;
private set;
}
/// <summary>
/// The system tick count of when the event occured.
/// </summary>
public int Timestamp
{
get;
private set;
}
/// <summary>
///
/// </summary>
internal Point Point {
get
{
return new Point(X, Y);
}
}
}
}