private void lowLevelMouseProcHook(LowLevelMouseMessage message, MouseLowLevelHookStruct info)
{
Current = info.pt;
switch (message)
{
case LowLevelMouseMessage.WM_LBUTTONUP:
case LowLevelMouseMessage.WM_RBUTTONUP:
if (MouseUp != null)
{
MouseUp(this, EventArgs.Empty);
}
break;
case LowLevelMouseMessage.WM_LBUTTONDOWN:
case LowLevelMouseMessage.WM_RBUTTONDOWN:
if (MouseDown != null)
{
MouseDown(this, EventArgs.Empty);
}
break;
case LowLevelMouseMessage.WM_MOUSEMOVE:
if (MouseMove != null)
{
MouseMove(this, EventArgs.Empty);
}
break;
default: break;
}
}
/// <summary>
/// Registers a low-level global mouse system hook.
/// </summary>
///
public static HookHandle SetWindowHook(LowLevelMouseProcedure callback)
{
IntPtr hHook;
NativeMethods.LowLevelHookProc lpfn;
using (Process process = Process.GetCurrentProcess())
using (ProcessModule module = process.MainModule)
{
IntPtr hModule = NativeMethods.GetModuleHandle(module.ModuleName);
lpfn = new NativeMethods.LowLevelHookProc((nCode, wParam, lParam) =>
{
// From
// http://msdn.microsoft.com/en-us/library/windows/desktop/ms644986(v=vs.85).aspx
//
// wParam contains the identifier of the mouse message.
// lParam contains a pointer to a MOUSEHOOKSTRUCT structure.
//
// The wParam can be can be one of the following messages: WM_LBUTTONDOWN,
// WM_LBUTTONUP, WM_MOUSEMOVE, WM_MOUSEWHEEL, WM_MOUSEHWHEEL, WM_RBUTTONDOWN,
// or WM_RBUTTONUP.
if (nCode < 0)
{
return(NativeMethods.CallNextHookEx(IntPtr.Zero, nCode, wParam, lParam));
}
MouseLowLevelHookStruct mouseInfo =
(MouseLowLevelHookStruct)Marshal.PtrToStructure(lParam,
typeof(MouseLowLevelHookStruct));
callback((LowLevelMouseMessage)(wParam.ToInt32()), mouseInfo);
return(NativeMethods.CallNextHookEx(IntPtr.Zero, nCode, wParam, lParam));
});
hHook = NativeMethods.SetWindowsHookEx(
NativeMethods.HookType.WH_MOUSE_LL, lpfn, hModule, 0);
}
return(new HookHandle(hHook, lpfn));
}
private void lowLevelMouseProcHook(LowLevelMouseMessage message, MouseLowLevelHookStruct info)
{
Current = info.pt;
switch (message)
{
case LowLevelMouseMessage.WM_LBUTTONUP:
case LowLevelMouseMessage.WM_RBUTTONUP:
if (MouseUp != null) MouseUp(this, EventArgs.Empty);
break;
case LowLevelMouseMessage.WM_LBUTTONDOWN:
case LowLevelMouseMessage.WM_RBUTTONDOWN:
if (MouseDown != null) MouseDown(this, EventArgs.Empty);
break;
case LowLevelMouseMessage.WM_MOUSEMOVE:
if (MouseMove != null) MouseMove(this, EventArgs.Empty);
break;
default: break;
}
}
