刷新清除 托盘图标缓存

//刷新任务栏图标
void RefreshTaskbarIcon()
{
    //任务栏窗口
    HWND hShellTrayWnd = ::FindWindow(L"Shell_TrayWnd", NULL);
    //任务栏右边托盘图标+时间区
    HWND hTrayNotifyWnd = ::FindWindowEx(hShellTrayWnd, 0, L"TrayNotifyWnd", NULL);
    //不同系统可能有可能没有这层
    HWND hSysPager = ::FindWindowEx(hTrayNotifyWnd, 0, L"SysPager", NULL);
    //托盘图标窗口
    HWND hToolbarWindow32;
    if (hSysPager)
    {
        hToolbarWindow32 = ::FindWindowEx(hSysPager, 0, L"ToolbarWindow32", NULL);
    }
    else
    {
        hToolbarWindow32 = ::FindWindowEx(hTrayNotifyWnd, 0, L"ToolbarWindow32", NULL);
    }
    if (hToolbarWindow32)
    {
        RECT r;
        ::GetWindowRect(hToolbarWindow32, &r);
        int width = r.right - r.left;
        int height = r.bottom - r.top;
        //从任务栏中间从左到右 MOUSEMOVE一遍，所有图标状态会被更新
        for (int x = 1; x < width; x++)
        {
            ::SendMessage(hToolbarWindow32, WM_MOUSEMOVE, 0, MAKELPARAM(x, height / 2));
        }
    }
}