UsbQueryStringReport: Difference between revisions
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==Syntax== | ==Syntax== | ||
ulrc = UsbQueryStringReport(Handle,usLangID,ucStringID,pulBufLen,pucData) | |||
ulrc = UsbQueryStringReport(Handle,usLangID,ucStringID,pulBufLen,pucData) | |||
==Parameters== | ==Parameters== | ||
; Handle : the Device Handle received from the previous UsbOpen. | ; Handle : the Device Handle received from the previous UsbOpen. | ||
; usLangID : the appropriate Language Code as to the array of Language Codes. | ; 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. | ; 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. | ; pulBufLen : the address of the variable to specify/receive the number of bytes. | ||
; pucData : the address of the buffer to receive the String Descriptor. | ; pucData : the address of the buffer to receive the String Descriptor. | ||
==Return Code== | ==Return Code== | ||
0x0000 - NO_ERROR | |||
0x0000 - NO_ERROR | |||
===Errors=== | ===Errors=== | ||
<pre> | <pre> | ||
| Line 30: | Line 23: | ||
0xFF57 - ERROR_INVALID_PARAMETER | 0xFF57 - ERROR_INVALID_PARAMETER | ||
</pre> | </pre> | ||
==Remarks== | ==Remarks== | ||
Latest revision as of 22:42, 13 September 2021
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
Remarks
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]);
}
}