在Inno Setup中使用WMI查询列出所有物理打印机

时间:2017-05-24 19:30:47

标签: inno-setup wmi-query pascalscript

我正在尝试根据Query available RAM in Inno Setup的答案获取与Windows连接的物理打印机名称列表。

但是得到:“发送到OneNote 16”。

这是我的问题:

Query := 'SELECT Name FROM Win32_Printer';
Printer := WbemQuery(WbemServices, Query);
if not VarIsNull(Printer) then
begin
  Log(Format('Printers=%s', [Printer.Name]));
end;

1 个答案:

答案 0 :(得分:1)

您必须迭代结果集:

var
  Query: string;
  WbemLocator, WbemServices, WbemObjectSet: Variant;
  Printer: Variant;
  I: Integer;
begin
  WbemLocator := CreateOleObject('WbemScripting.SWbemLocator');
  WbemServices := WbemLocator.ConnectServer('.', 'root\CIMV2');
  Query := 'SELECT Name FROM Win32_Printer';
  WbemObjectSet := WbemServices.ExecQuery(Query);
  if not VarIsNull(WbemObjectSet) and (WbemObjectSet.Count > 0) then
  begin
    for I := 0 to WbemObjectSet.Count - 1 do
    begin
      Printer := WbemObjectSet.ItemIndex(I);
      if not VarIsNull(Printer) then
      begin
        Log(Printer.Name);
      end;
    end;
  end;
end;

该代码需要better Variant support的Inno Setup的Unicode版本。

实际上,您可以在同一个问题中看到此代码,您可以从中获取WbemQuery
Is there a way to read the system's information in Inno Setup

注意Win32_NetworkAdapterConfiguration是如何迭代的。