通过

3.1.4.5.3 RpcGetForm (Opnum 32)

  • 项目

RpcGetForm retrieves information about a specified form.

 DWORD RpcGetForm(
   [in] PRINTER_HANDLE hPrinter,
   [in, string] wchar_t* pFormName,
   [in] DWORD Level,
   [in, out, unique, size_is(cbBuf), disable_consistency_check] 
     BYTE* pForm,
   [in] DWORD cbBuf,
   [out] DWORD* pcbNeeded
 );

hPrinter: A handle to a printer object or server object that was opened by RpcAddPrinter (section 3.1.4.2.3), RpcAddPrinterEx (section 3.1.4.2.15), RpcOpenPrinter (section 3.1.4.2.2), or RpcOpenPrinterEx (section 3.1.4.2.14).

pFormName: A pointer to a string that specifies the form name for which data is required. For rules governing form names, see section 2.2.4.5.

Level: The form information level.

Value

Description

0x00000001

Corresponds to _FORM_INFO_1 (section 2.2.2.5.1).

0x00000002

Corresponds to _FORM_INFO_2 (section 2.2.2.5.2).

pForm: A pointer to the BUFFER, as specified in INFO Structures Query Parameters (section 3.1.4.1.9).

BUFFER TYPE: _FORM_INFO.

This parameter can be NULL if cbBuf equals zero.

cbBuf: Specified in INFO Structures Query Parameters.

pcbNeeded: Specified in INFO Structures Query Parameters.

Return Values: This method MUST return zero (ERROR_SUCCESS) to indicate successful completion or a nonzero Windows error code to indicate failure [MS-ERREF].

Upon receiving this message, the server MUST validate parameters as follows:

  • Perform the validation steps that are specified in PRINTER_HANDLE Parameters (section 3.1.4.1.11). This method SHOULD assume that the handle to the printer or server object can be used without further access checks.

  • Verify that the pFormName parameter points to a string that identifies an existing form. If that verification fails, return ERROR_INVALID_FORM_NAME [MS-ERREF].

  • Perform the validation steps specified in INFO Structures Query Parameters.

If parameter validation fails, the server MUST fail the operation immediately and return a nonzero error response to the client. Otherwise, the server MUST process the message and compose a response to the client as follows:

  • Using information about the form, perform the processing and response steps specified in INFO Structures Query Parameters.

  • Return the status of the operation.