怎么没有人知道吗？
怎么都不用这个对话框吗？
自己顶了。。。

自己搞定：
psd.hDevNames使用错，应该像下面这样使用（引用）：

BOOL   CMyApp::SetPrinterDevice(char*   pszDeviceName)   
        {   
        //   Open   printer   and   obtain   PRINTER_INFO_2   structure.   
        HANDLE   hPrinter;   
        if   (OpenPrinter(pszDeviceName,   &hPrinter,   NULL)   ==   FALSE)   
                return   FALSE;   
        DWORD   dwBytesReturned,   dwBytesNeeded;   
        GetPrinter(hPrinter,   2,   NULL,   0,   &dwBytesNeeded);   
        PRINTER_INFO_2*   p2   =   (PRINTER_INFO_2*)GlobalAlloc(GPTR,   
                dwBytesNeeded);   
        if   (GetPrinter(hPrinter,   2,   (LPBYTE)p2,   dwBytesNeeded,   
                &dwBytesReturned)   ==   0)   {   
        GlobalFree(p2);   
        ClosePrinter(hPrinter);   
        return   FALSE;   
        }   
        ClosePrinter(hPrinter);   
    
        //   Allocate   a   global   handle   for   DEVMODE   and   copy   DEVMODE   data.   
        HGLOBAL     hDevMode   =   GlobalAlloc(GHND,   sizeof(*p2->pDevMode));   
        DEVMODE*   pDevMode   =   (DEVMODE*)GlobalLock(hDevMode);   
        memcpy(pDevMode,   p2->pDevMode,   sizeof(*p2->pDevMode));   
        GlobalUnlock(hDevMode);   
    
        //   Compute   size   of   DEVNAMES   structure   you'll   need.   
        DWORD   drvNameLen   =   strlen(p2->pDriverName);     //   driver   name   
        DWORD   ptrNameLen   =   strlen(p2->pPrinterName);   //   printer   name   
        DWORD   porNameLen   =   strlen(p2->pPortName);         //   port   name   
        DWORD   devNameSize   =   sizeof(DEVNAMES)   +   
                ptrNameLen   +   porNameLen   +   drvNameLen   +   3;   
    
        //   Allocate   a   global   handle   big   enough   to   hold   DEVNAMES.   
        HGLOBAL       hDevNames   =   GlobalAlloc(GHND,   devNameSize);   
        DEVNAMES*   pDevNames   =   (DEVNAMES*)GlobalLock(hDevNames);   
    
        //   Copy   the   DEVNAMES   information   from   PRINTER_INFO_2   structure.   
        pDevNames->wDriverOffset   =   sizeof(DEVNAMES);   
        memcpy((char*)pDevNames   +   pDevNames->wDriverOffset,   
                p2->pDriverName,   drvNameLen);   
    
        pDevNames->wDeviceOffset   =   sizeof(DEVNAMES)   +   
        drvNameLen   +   1;   
        memcpy((char*)pDevNames   +   pDevNames->wDeviceOffset,   
                p2->pPrinterName,   ptrNameLen);   
    
        pDevNames->wOutputOffset   =   sizeof(DEVNAMES)   +   
                drvNameLen   +   ptrNameLen   +   2;   
        memcpy((char*)pDevNames   +   pDevNames->wOutputOffset,   
                p2->pPortName,   porNameLen);   
    
        pDevNames->wDefault   =   0;   
    
        GlobalUnlock(hDevNames);   
        GlobalFree(p2);       //   free   PRINTER_INFO_2   
    
        m_hDevMode   =   hDevMode;   
        m_hDevNames   =   hDevNames;   
        return   TRUE;   
        }   


设置页面时，将hDevNames设置NULL就行了。