質問にリンクされている質問に基づいて、私は最終的に動作する解決策を見つけました。私はこれがWindows CE/Mobile上で同様の問題を抱えて将来他の誰かに役立つことを願っています。
[DllImport("coredll.dll")]
public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
[DllImport("coredll.dll")]
public static extern IntPtr SendMessage(IntPtr hWnd, int nMsg, IntPtr wParam, IntPtr lParam);
private const int WM_MOUSEMOVE = 0x0200;
public static void RefreshTrayArea()
{
// The client rectangle can be determined using "GetClientRect" (from coredll.dll) but
// does require the taskbar to be visible. The values used in the loop below were
// determined empirically.
IntPtr hTrayWnd = FindWindow("HHTaskBar", null);
if (hTrayWnd != IntPtr.Zero)
{
int nStartX = (Screen.PrimaryScreen.Bounds.Width/2);
int nStopX = Screen.PrimaryScreen.Bounds.Width;
int nStartY = 0;
int nStopY = 26; // From experimentation...
for (int nX = nStartX; nX < nStopX; nX += 10)
for (int nY = nStartY; nY < nStopY; nY += 5)
SendMessage(hTrayWnd,
WM_MOUSEMOVE, IntPtr.Zero, (IntPtr)((nY << 16) + nX));
}
}