public static TaskbarState GetWinTaskbarState()
{
APPBARDATA ABD = new APPBARDATA();
TaskbarState retState = new TaskbarState();
var hwnd = User32.FindWindow(ClassName, null);
ABD.cbSize = Marshal.SizeOf(ABD);
ABD.uEdge = 0;
ABD.hWnd = hwnd;
ABD.lParam = 1;
RECT scaledTaskbarRect;
User32.GetWindowRect(hwnd, out scaledTaskbarRect);
var taskbarNonDPIAwareSize = Shell32.SHAppBarMessage((int)ABMsg.ABM_GETTASKBARPOS, ref ABD);
var scalingAmount = (double)(scaledTaskbarRect.bottom - scaledTaskbarRect.top) / (ABD.rc.bottom - ABD.rc.top);
retState.TaskbarSize = default(RECT);
retState.TaskbarSize.top = (int)(ABD.rc.top * scalingAmount);
retState.TaskbarSize.bottom = (int)(ABD.rc.bottom * scalingAmount);
retState.TaskbarSize.left = (int)(ABD.rc.left * scalingAmount);
retState.TaskbarSize.right = (int)(ABD.rc.right * scalingAmount);
var screen = Screen.AllScreens.FirstOrDefault(x => x.Bounds.Contains(
new Rectangle(
retState.TaskbarSize.left,
retState.TaskbarSize.top,
retState.TaskbarSize.right - retState.TaskbarSize.left,
retState.TaskbarSize.bottom - retState.TaskbarSize.top)
));
retState.TaskbarPosition = TaskbarPosition.Bottom;
if (screen != null)
{
if (retState.TaskbarSize.bottom == screen.Bounds.Bottom && retState.TaskbarSize.top == screen.Bounds.Top)
{
retState.TaskbarPosition = (retState.TaskbarSize.left == screen.Bounds.Left) ? TaskbarPosition.Left : TaskbarPosition.Right;
}
if (retState.TaskbarSize.right == screen.Bounds.Right && retState.TaskbarSize.left == screen.Bounds.Left)
{
retState.TaskbarPosition = (retState.TaskbarSize.top == screen.Bounds.Top) ? TaskbarPosition.Top : TaskbarPosition.Bottom;
}
}
return retState;
}
public static extern IntPtr SHAppBarMessage(uint dwMessage, [In] ref APPBARDATA pData);
