网络搜索找到几篇文章,其中包含示例代码,显示如何在应用程序被终止时清除Windows托盘通知区域中遗留的杂散图标(例如,通过Task Manager
或更新程序应用程序)。例如this CodeProject example或this blog post。
上述两个示例都使用了类似的技术,据报道可以在Windows XP,7,8.1和10上使用。
但是如何让他们使用.NET Compact Framework在Windows CE上工作?一个问题是FindWindowEx
是必需的......但在coredll.dll
中无法使用。
答案 0 :(得分:1)
基于与问题相关的问题,我终于找到了一个有效的解决方案。我希望将来在Windows CE / Mobile上遇到类似的问题可以帮助其他人。
[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));
}
}