UsbQueryStringReport

Description
Obtains the array of languages supported by a USB device. Obtains the specified string descriptor of a USB device.

Syntax
ulrc = UsbQueryStringReport(Handle,usLangID,ucStringID,pulBufLen,pucData)

Parameters

 * Handle : the Device Handle received from the previous UsbOpen.


 * usLangID : the appropriate Language Code as to the array of Language Codes.


 * ucStringID : ucStringID - the Descriptor Index or 0 to obtain the array of Language Codes.


 * pulBufLen : the address of the variable to specify/receive the number of bytes.


 * pucData : the address of the buffer to receive the String Descriptor.

Return Code
0x0000 - NO_ERROR

Errors
0x0057 - ERROR_INVALID_PARAMETER 0x1B58 - USB_NOT_INIT 0xFF1F - ERROR_GEN_FAILURE 0xFF57 - ERROR_INVALID_PARAMETER

Example Code
//Code Snippet - UsbQueryStringReport { APIRET ulrc; PUCHAR pucReport; PULONG pulBufLen; UCHAR ucIndex = 2; UCHAR ucReport[4096]; ULONG ulBufLen = sizeof(ucReport); USHORT usLanguage = 0x0409;

pucReport = &ucReport[0]; pulBufLen = &ulBufLen; ulrc = UsbQueryStringReport(Handle,usLanguage,ucIndex,pulBufLen,pucReport); printf("\nUsbQueryStringReport - ulrc: 0x%04X (%hu)",ulrc,ulrc); if (!ulrc) //success {   int i; printf(" - StringReport:\n"); for (i=0;i<ulBufLen;i++) printf("%02X",ucReport[i]); } }

Related Functions

 * UsbQueryDeviceReport
 * UsbOpen