C# / Windows Forms - 我如何确定某人当前是否在“拖拽”？ （不在 DragOver 事件中）

Question

Assuming that I'm in a function that is called in a Timer on in Windows Forms class... how can I tell if the user is currently attempting to "Drag" something?

example:

public void SomeMethod()
{
    // This doesn't exist of course :)
    if (Mouse.IsDragging) ...
}

EDIT: I should specify that I know that I can override DragEnter and DragLeave to set my own private variable... but I'm asking/looking for a '.Nety' solution if one exists.

Answer 1

Easy:

        bool mDragging;
...
            mDragging = true;
            DoDragDrop("test", DragDropEffects.All);
            mDragging = false;

Universal:

    public static bool IsDragging()
    {
        StackFrame[] frames = new StackTrace(false).GetFrames();
        foreach (StackFrame frame in frames)
        {
            System.Reflection.MethodBase mb = frame.GetMethod();
            if (mb.Module.Name == "System.Windows.Forms.dll" && mb.Name == "DoDragDrop")
                return true;
        }
        return false;
    }