Online Development Notebook > Index > ODN > USBm DLL Programming > DLL Commands > DebugString

DebugString

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Description:

This is a USBm.dll function that returns a string with debug information.

 

Command Syntax:

true⁄false USBm_DebugString(string)

The USBm_DebugString function syntax has these parts:

 

Remarks:

In VB the string passed as an argument must be large enough to hold all the characters that the function places in the string. The best way to acheive this is to set the string to a large size with the String function as in this code:

strStrng = String(250, " ")

Note: USBm_DebugString always returns TRUE.

Note: USBm_DebugString does not affect the internal error string.

 

VB Declaration (USBmAPI.bas)

Public Declare Function USBm_DebugString _     Lib "USBm.dll" _         (ByVal debugstrng As String) _     As Integer

 

VB Example

Dim strng As String * 255     USBm_DebugString strng     frmStatus.lstDevices.AddItem "Debug: " & strng

This code fragment shows that strng is loaded with the "debug" text of the DLL. Assuming that the form called "Main" exists with a text box called "Info", the "debug" information will be made visible to the user.

 

C Example

-TBD-

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Hardware:  U401 USB Interface    U421 USB Interface

Programming:  USBm DLL Programming    Download Files

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