Exactly, so it is correct. When you pass null for the buffer the return value is the count array value that will be need for the buffer. All you need is multiply it with how many byte per each array buffer (depends on DC_xxx value). Anyway, you can hardcoded the way you did, just make sure not to make it too small :-)


>I hardcoded the string length to 1024 in my code because I know that's what it's supposed to be for bin names. The call that I've commented out in my code is returning 2, 4, or 5 depending on which printer I pass to it, and is generating error code 122, which translates to "The data area passed to a system call is too small."
>
>>Sorry for jumping in. I think your class is great. The sample works fine too! Since you said you're not sure about the length of string, I've looked through your code for the buffer:
>>

>>    * First call DeviceCapabilities in a way that returns the size of the buffer we need
>>*   lnBuffer = DeviceCapabilities(lcPrinterName, lcPort, tnValue, 0, 0)
>>*   The above call is only returning 2.  Need to figure out why it's not correct.
>>
>>lnBuffer = 1024
>>lcIDBuf = REPLICATE(CHR(0), lnBuffer)
>>lnDCCnt = DeviceCapabilities(lcPrinterName, lcPort, tnValue, @lcIdBuf, 0)
>>

>>
>>I think the return value from the first call is correct. Can you tell a bit more why do you think it is not? What printer you use to test it?
>>Try to compare the return value from the first call with the second call. Both calls should return the same value
>>
>>Regards