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我試圖從Windows中以編程方式刪除打印機條目，並且它似乎與TCP/IP打印機一起使用，但不能與分配給USB端口一起使用。實際上，打印機條目從Win32_Printer WMI集合中消失，但仍然存在於「控制面板 - 設備和打印機」中。它只有在那裏沒有司機和額外的信息分配名稱。 我試圖通過ManagementScope和「DeletePrinter」打印後臺處理程序API方法做到這一點。我的代碼片段：無法通過Windows 8.1和Windows 10上的Win32 API從控制面板中刪除打印機
管理範圍：
ManagementScope scope = new ManagementScope(ManagementPath.DefaultPath);
scope.Connect();
SelectQuery query = new SelectQuery("select * from Win32_Printer WHERE Name LIKE '" + printerName + "'");
ManagementObjectSearcher search = new ManagementObjectSearcher(scope, query);
ManagementObjectCollection printersCollection = search.Get();
foreach (ManagementObject printer in printersCollection)
printer.Delete();
DeletePrinter：
[DllImport("winspool.drv", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
static extern bool DeletePrinter(IntPtr hPrinter);
[DllImport("winspool.drv", SetLastError = true)]
static extern int ClosePrinter(IntPtr hPrinter);
[DllImport("winspool.drv", CharSet = CharSet.Unicode, ExactSpelling = false, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
public static extern int OpenPrinter(string pPrinterName, out IntPtr phPrinter, IntPtr pDefault);
private static bool DeletePrinter(string printerName)
{
var pd = new PRINTER_DEFAULTS { DesiredAccess = 8 | 4 | 0x000F0000 };
var rawsize = Marshal.SizeOf(pd);
var pdPtr = Marshal.AllocHGlobal(rawsize);
Marshal.StructureToPtr(pd, pdPtr, true);
IntPtr hPrinter;
if (OpenPrinter(printerName, out hPrinter, pdPtr) != 0)
{
if (hPrinter != IntPtr.Zero)
{
var result = DeletePrinter(hPrinter);
ClosePrinter(hPrinter);
return result;
}
}
return false;
}