|Online Development Notebook > Index > Programming Overview > DLL Commands > DebugString|
DebugString - Return the contents of the debug string
This is a USBm.dll function that returns a string with debug information.
true⁄false USBm_DebugString( string )
The USBm_DebugString function syntax has these parts:
|string||Any valid string expression.|
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) _
|Dim strng As String * 255|
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.
|int USBm_DebugString( char *errorstring );|
Recent Error and Debug String are handled by the RobotBASIC function usbm_ErrorSpecs().
Returns a string that contains information about the recent error string and debug string if any in the DLL. There are two sections seperated by the | character. You can use the Extract() function to extract each section seperately if desired. The sections are:
Hardware: U401 USB Interface U421 USB Interface U451 USB Interface
Programming: USBm DLL Programming Download Files
Application Notes: U4x1 Application Notes Misc Applications and Information FAQ
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