将打印机设置为默认打印机后，打印机图标旁边将出现一个复选标记。
After you set a printer as the default printer, a check mark appears next to the printer icon.
集合以查找具有某些属性的打印机，然后将该打印机设置为您的应用程序的默认打印机。
Printers collection to find a printer with certain attributes and then set that printer to be the default printer for your application.
集合以查找具有某些属性的打印机，然后将该打印机设置为您的应用程序的默认打印机。
Printers collection to find a printer with certain attributes and then set that printer to be the default printer for your application.
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