[blight] 18296: Patch by Christoph v.W.:

Patch by Christoph v.W.:
- speed-up adding items to ListView
- fix resource leak (GetDC without ReleaseDC)
(Bug #870)
Modified: trunk/reactos/subsys/system/devmgr/devmgr.c
  _____

Modified: trunk/reactos/subsys/system/devmgr/devmgr.c
--- trunk/reactos/subsys/system/devmgr/devmgr.c	2005-10-06 14:31:18 UTC
(rev 18295)
+++ trunk/reactos/subsys/system/devmgr/devmgr.c	2005-10-06 15:02:50 UTC
(rev 18296)
@@ -93,6 +93,8 @@

long Size;
    long rc;

+	SendMessage(hwndListView, WM_SETREDRAW, FALSE, 0);
+
    ListView_DeleteAllItems(hwndListView);
    while (1)
    {
@@ -187,6 +189,7 @@
    	}
    	SetupDiDestroyDeviceInfoList(hDevInfo);
    }
+	SendMessage(hwndListView, WM_SETREDRAW, TRUE, 0);
 }

CONFIGRET GetDeviceName(DEVINST DevInst, LPTSTR Buffer, DWORD
BufferLength)
@@ -271,8 +274,9 @@
    	_tprintf(_T("CM_Locate_DevNode() failed, cr= 0x%lx\n"),
cr);
    	return 1;
    }
-
+	SendMessage(hwndListView, WM_SETREDRAW, FALSE, 0);
    cr = ListSubNodes(root, 0);
+	SendMessage(hwndListView, WM_SETREDRAW, TRUE, 0);
    if (cr != CR_SUCCESS)
    	return 2;
    return 0;
@@ -304,6 +308,7 @@

i = 0;
    DeviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
+	SendMessage(hwndListView, WM_SETREDRAW, FALSE, 0);
    while (TRUE)
    {
    	if (!SetupDiEnumDeviceInterfaces(
@@ -332,6 +337,7 @@
    	}

}
+	SendMessage(hwndListView, WM_SETREDRAW, TRUE, 0);
    SetupDiDestroyDeviceInfoList(hDevInfo);
    return 0;
 }
@@ -484,6 +490,7 @@
       ResizeListView(hWnd);
       break;
    case WM_DESTROY:
+      ReleaseDC(hWnd, hDC);
       PostQuitMessage(0);
       break;
    case WM_COMMAND: