打印问题！急，在线等！

Question

我的程序中需要打印条码和铭牌，连接了两台打印机，一台是本地打印机（设置为默认打印机），另一台是网络共享打印机。默认打印都OK，可是共享打印机就不能打印。我的程序如下，请问：在VC中如何调用共享打印机进行打印。以下代码是调用共享打印机的代码。CDC dc;
dc.CreateDC("TEC B-452","TEC B-452","LPT1",NULL);
DOCINFO di;
::ZeroMemory (&di,sizeof(DOCINFO));
di.cbSize = sizeof(DOCINFO);
if (dc.StartDoc(&di) == -1)
{
    AfxMessageBox("StartDoc error");
    return;
}
程序运行后，就提示StartDoc error,请问打印dc为什么创建不了？是程序上的问题还是系统设置方面的问题？

Answer 1

HDC CreateDC(LPCTSTR lpszDriver,LPCTSTR lpszDevice,LPCTSTR lpszOutput,CONST DEVMODE *lpinitData);
参数对不对呀
EPSON LQ-1600K,EPSON24,LPT1:

Answer 2

DWORD dwNeeded,dwReturned;
HDC hdc;
PRINTER_INFO_1 *pinfo1;
EnumPrinters(PRINTER_ENUM_NETWORK|PRINTER_ENUM_NAME|PRINTER_ENUM_REMOTE,NULL,1,NULL,0,&dwNeeded,&dwReturned);
pinfo1=(PRINTER_INFO_1 *)malloc(dwNeeded);
EnumPrinter(PRINTER_ENUM_NETWORK|PRINTER_ENUM_NAME|PRINTER_ENUM_REMOTE,NULL,1,(PBYTE)pinfo1,dwNeeded,&dwNeeded,&dwReturned);
hdc=CreateDC(NULL,pinfo1->pName,NULL,NULL);
free(pinfo1);
static DOCINFO di={sizeof(DOCINFO),TEXT("print1")};
if(hdcprint!=NULL)
{
if(StartDoc(hdcprint,&di)>0)
if(StartPage(hdcprint)>0&&EndPage(hdcprint)>0)
EndDoc(hdcprint);
DeleteDC(hdcprint);
}

Answer 3

hdc=CreateDC(("TEC B-452",pinfo1->pName,","LPT1",NULL);

Answer 4

参数都是对的，驱动名和打印机名都是TEC B-452。
请问Jarrylogin(正经事情我不会,歪门邪道样样行)：hdc=CreateDC(("TEC B-452",pinfo1->pName,","LPT1",NULL); 是什么意思？？是不是应该写成hdc=CreateDC("TEC B-452","pinfo1->pName,","LPT1",NULL);啊？？

Answer 5

还有 DeleteDC(hdcprint)应该是DeleteDC(hdc)吧？

Answer 6

hdc=CreateDC("TEC B-452","pinfo1->pName,","LPT1",NULL);
首先要枚举网络打印机
EnumPrinters(PRINTER_ENUM_NETWORK|PRINTER_ENUM_NAME|PRINTER_ENUM_REMOTE,NULL,1,NULL,0,&dwNeeded,&dwReturned);
pinfo1=(PRINTER_INFO_1 *)malloc(dwNeeded);
EnumPrinter(PRINTER_ENUM_NETWORK|PRINTER_ENUM_NAME|PRINTER_ENUM_REMOTE,NULL,1,(PBYTE)pinfo1,dwNeeded,&dwNeeded,&dwReturned);
hdc=CreateDC(NULL,pinfo1->pName,NULL,NULL);

Answer 7

楼上的，我有点不懂了，
hdc=CreateDC("TEC B-452","pinfo1->pName,","LPT1",NULL);
和
hdc=CreateDC(NULL,pinfo1->pName,NULL,NULL);有什么不同啊？麻烦您给解释一下。还有DWORD dwNeeded,dwReturned;
HDC hdc;
PRINTER_INFO_1 *pinfo1;
EnumPrinters(PRINTER_ENUM_NETWORK|PRINTER_ENUM_NAME|PRINTER_ENUM_REMOTE,NULL,1,NULL,0,&dwNeeded,&dwReturned);
pinfo1=(PRINTER_INFO_1 *)malloc(dwNeeded);
EnumPrinter(PRINTER_ENUM_NETWORK|PRINTER_ENUM_NAME|PRINTER_ENUM_REMOTE,NULL,1,(PBYTE)pinfo1,dwNeeded,&dwNeeded,&dwReturned);
hdc=CreateDC(NULL,pinfo1->pName,NULL,NULL);
free(pinfo1);
static DOCINFO di={sizeof(DOCINFO),TEXT("print1")};
if(hdcprint!=NULL)
{
if(StartDoc(hdcprint,&di)>0)
if(StartPage(hdcprint)>0&&EndPage(hdcprint)>0)
   EndDoc(hdcprint);
//是否在这里插入打印的内容？？
DeleteDC(hdcprint); //??hdcprint是否应该是hac??
}
hdc=CreateDC("TEC B-452","pinfo1->pName,","LPT1",NULL);这段代码应该放在上面代码中的什么位置？

Answer 8

hdc=CreateDC(NULL,pinfo1->pName,NULL,NULL);
换成
hdc=CreateDC(("TEC B-452",pinfo1->pName,"LPT1",NULL);
枚举网络打印机的信息放pinfo1hdc是hdcprint你调试一下