private IntPtr HookCallback(
int nCode, IntPtr wParam, IntPtr lParam)
{
if (nCode >= 0)
{
MSLLHOOKSTRUCT hookStruct = (MSLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(MSLLHOOKSTRUCT));
if (
_oldLocation.x != hookStruct.pt.x ||
_oldLocation.y != hookStruct.pt.y
)
{
_oldLocation = hookStruct.pt;
var p = new HookMouseEventArg
{
Point = new Point(hookStruct.pt.x, hookStruct.pt.y),
Handled = false
};
OnMouseMove(p);
if (p.Handled)
{
return(new IntPtr(-1));
}
}
}
return(CallNextHookEx(_hookId, nCode, wParam, lParam));
}
protected virtual void OnMouseMove(HookMouseEventArg args)
{
MouseMove?.Invoke(this, args);
}