一个Web搜索找到了几篇文章,其中包含示例代码,显示如何在杀死应用程序时在Windows Tray通知区域中留下的流浪图标(例如,通过Task Manager
或更新程序应用程序(。例如,此codeproject示例或此博客文章。
上面的两个示例都使用类似的技术,并据报道在Windows XP,7、8.1和10上使用。
。但是如何使用.NET紧凑型框架使它们在Windows CE上工作?一个问题是需要FindWindowEx
...但是coredll.dll
中不可用。
基于问题所链接的问题,我终于找到了一个有效的解决方案。我希望这对以后在Windows CE/Mobile上有类似问题的其他人对其他人有帮助。
[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));
}
}