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请问我运行到下面代码的时候出现这个错误是怎么回事?运行到红色部分就报这个错误了
代码如下:
Business.Forms.Printers.Printer.PrinterIndex :=i;
Business.Forms.Printers.Printer.GetPrinter (Device, Driver, Port, hDeviceMode);
Business.System.SysUtils.StrCopy (s, Device);
Business.System.SysUtils.StrCat (s, ',');
Business.System.SysUtils.StrCat (s, Driver);
Business.System.SysUtils.StrCat (s, ',');
Business.System.SysUtils.StrCat (s, Port);
Borland.Delphi.Windows.WriteProfileString ('windows', 'device', s);
Business.System.SysUtils.StrCopy(s, 'windows');
Borland.Delphi.Windows.SendMessage (Borland.Delphi.Windows.HWND_BROADCAST,
Borland.Delphi.Messages.WM_WININICHANGE, 0, 0);
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